# Aldebaran Reports 1,339.30 m of 0.45% CuEq \(0.38% Cu, 0.14 g/t Au & 2.54 g/t Ag\) including 500 m of 0.71% CuEq \(0.58% Cu, 0.35 g/t Au & 1.42 g/t Ag\) at the Altar Copper-Gold Project in San Juan, Argentina

Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c

Original source: https://money.tmx.com/en/quote/ALDE/news/8883230458220330/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ

Publisher: tmx

Original announcement: 2026-05-21T11:00:00.000Z

Analysis by Minestarters Atlas

Atlas analysis published: Unknown date

Atlas analysis updated: Unknown date

- Company: Aldebaran Resources Inc.

- Ticker: ALDE

- Exchange: TSX

- Region: San Juan, Argentina

- Primary commodity: Copper

- Secondary commodities: Gold, Silver, Molybdenum

- Document categories: Drill results, Resource update

- Extracted: 2026-08-20 22:55:34 UTC

Narrative sentiment: 0.80 · Bullish

## Minestarters Atlas summary

Aldebaran Resources reports significant infill drill results from its Altar Copper-Gold Project in San Juan, Argentina, including a headline intercept of 1,339.30 m of 0.45% CuEq. These results are part of a program designed to upgrade inferred resource blocks to Measured and Indicated categories, supporting an upcoming mineral resource estimate and Pre-Feasibility Study. The company highlights several long, high-grade copper equivalent intercepts, confirming continuity and scale of mineralization.

Reasoning: The drill results from the infill program at Altar demonstrate significant, long intercepts of copper-gold-silver-molybdenum mineralization, which is positive for upgrading the resource and advancing the project towards a Pre-Feasibility Study. The disclosure of true width and detailed QA/QC adds confidence to the results, although the presence of arsenic is noted.

- Positive factor: Long, high-grade intercepts

- Positive factor: Infill drilling aimed at resource upgrade

- Positive factor: True width disclosed

- Positive factor: Comprehensive QA/QC disclosure

- Positive factor: QP sign-off

- Positive factor: Metal equivalent assumptions fully disclosed

- Negative factor: Presence of arsenic as a deleterious element

Low confidence — this extraction should be reviewed alongside the original source.

Facts used in scoring: 96

## Classification and evidence

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: The document explicitly states the drilling program is 'infill drilling' with the goal to 'upgrade resource blocks classified as Inferred to the Measured & Indicated categories'.

Evidence · text

> infill drilling program at the Altar project in San Juan, Argentina. The goal of these holes was to upgrade resource blocks classified as Inferred to the Measured & Indicated categories.

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: The document explicitly states that 'Intervals represent true thickness of the deposit'.

Evidence · text

> Intervals represent true thickness of the deposit.

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: The document includes a dedicated 'Sampling and Analytical Procedures' section detailing protocols, certified labs, and insertion of standards, blanks, and duplicates.

Evidence · text

> Altar follows systematic and rigorous sampling and analytical protocols which meet and exceed industry standards. These protocols are summarized below and are available on the Aldebaran website at www.aldebaranresources.com .

**QP/CP Signed**

Polarity: positive

Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience.

Why it applies: Dr. Kevin B. Heather is named as the Qualified Person \(QP\) under NI 43-101 and has reviewed and approved the scientific and technical data.

Evidence · text

> Dr. Kevin B. Heather, B.Sc. \(Hons\), M.Sc, Ph.D, FAusIMM, FGS, Chief Geological Officer and director of Aldebaran, who serves as the qualified person \(QP\) under the definitions of National Instrument 43-101.

**Deleterious Elements Present**

Polarity: negative

Definition: Penalty elements \(arsenic, antimony, etc.\) or refractory concerns noted in the release.

Why it applies: Arsenic \(As\) is reported in the assay table for all drill holes.

Evidence · table

> As \(ppm\)

Context: CuEq \(%\)

**Category Upgrade**

Polarity: positive

Definition: Resource confidence improved — Inferred upgraded to Indicated, or Indicated to Measured. De-risking signal.

Why it applies: The stated goal of the infill drilling program is to 'upgrade resource blocks classified as Inferred to the Measured & Indicated categories'.

Evidence · text

> The goal of these holes was to upgrade resource blocks classified as Inferred to the Measured & Indicated categories.

## Extracted facts

Stored fact records: 96. Some facts used in scoring do not have a stored record.

## Drill Results (96)

### ALD-26-036EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-0)

Altar Copper-Gold Project · copper

#### Identity

- Hole ID: ALD-26-036EXT
- Project: Altar Copper-Gold Project
- Commodity: copper
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.31
- Grade Unit: %
- Intercept: 54 m
- True Width: 54 m
- From: 24 m
- To: 78 m
- Hole Depth: 950.1 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-036EXT:24.0-78.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.37
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: This intercept shows a good copper equivalent grade over a moderate length, contributing to the resource upgrade efforts with disclosed true width.

- Positive factor: Good copper equivalent grade

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 0.31

Context: 54.00

### ALD-26-036EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-1)

Altar Copper-Gold Project · gold

#### Identity

- Hole ID: ALD-26-036EXT
- Project: Altar Copper-Gold Project
- Commodity: gold
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.14
- Grade Unit: g/t
- Intercept: 54 m
- True Width: 54 m
- From: 24 m
- To: 78 m
- Hole Depth: 950.1 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-036EXT:24.0-78.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.37
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The gold grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low gold grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 0.14

Context: 54.00

### ALD-26-036EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-2)

Altar Copper-Gold Project · silver

#### Identity

- Hole ID: ALD-26-036EXT
- Project: Altar Copper-Gold Project
- Commodity: silver
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 2.54
- Grade Unit: g/t
- Intercept: 54 m
- True Width: 54 m
- From: 24 m
- To: 78 m
- Hole Depth: 950.1 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-036EXT:24.0-78.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.37
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The silver grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low silver grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 2.54

Context: 54.00

### ALD-26-036EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-3)

Altar Copper-Gold Project · molybdenum

#### Identity

- Hole ID: ALD-26-036EXT
- Project: Altar Copper-Gold Project
- Commodity: molybdenum
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 13
- Grade Unit: ppm
- Intercept: 54 m
- True Width: 54 m
- From: 24 m
- To: 78 m
- Hole Depth: 950.1 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-036EXT:24.0-78.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.37
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The molybdenum grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low molybdenum grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 13

Context: 54.00

### ALD-26-036EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-4)

Altar Copper-Gold Project · copper

#### Identity

- Hole ID: ALD-26-036EXT
- Project: Altar Copper-Gold Project
- Commodity: copper
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.51
- Grade Unit: %
- Intercept: 826.1 m
- True Width: 826.1 m
- From: 124 m
- To: 950.1 m
- Hole Depth: 950.1 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-036EXT:124.0-950.1
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.54
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: This very long intercept with a strong copper equivalent grade is highly material for resource definition and upgrade, with true width disclosed.

- Positive factor: Long intercept length

- Positive factor: Strong copper equivalent grade for porphyry

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 0.51

Context: 826.10

### ALD-26-036EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-5)

Altar Copper-Gold Project · gold

#### Identity

- Hole ID: ALD-26-036EXT
- Project: Altar Copper-Gold Project
- Commodity: gold
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.08
- Grade Unit: g/t
- Intercept: 826.1 m
- True Width: 826.1 m
- From: 124 m
- To: 950.1 m
- Hole Depth: 950.1 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-036EXT:124.0-950.1
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.54
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The gold grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low gold grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 0.08

Context: 826.10

### ALD-26-036EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-6)

Altar Copper-Gold Project · silver

#### Identity

- Hole ID: ALD-26-036EXT
- Project: Altar Copper-Gold Project
- Commodity: silver
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 1.27
- Grade Unit: g/t
- Intercept: 826.1 m
- True Width: 826.1 m
- From: 124 m
- To: 950.1 m
- Hole Depth: 950.1 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-036EXT:124.0-950.1
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.54
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The silver grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low silver grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 1.27

Context: 826.10

### ALD-26-036EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-7)

Altar Copper-Gold Project · molybdenum

#### Identity

- Hole ID: ALD-26-036EXT
- Project: Altar Copper-Gold Project
- Commodity: molybdenum
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 12
- Grade Unit: ppm
- Intercept: 826.1 m
- True Width: 826.1 m
- From: 124 m
- To: 950.1 m
- Hole Depth: 950.1 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-036EXT:124.0-950.1
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.54
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The molybdenum grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low molybdenum grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 12

Context: 826.10

### ALD-26-036EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-8)

Altar Copper-Gold Project · copper

#### Identity

- Hole ID: ALD-26-036EXT
- Project: Altar Copper-Gold Project
- Commodity: copper
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 1
- Grade Unit: %
- Intercept: 98 m
- True Width: 98 m
- From: 140 m
- To: 238 m
- Hole Depth: 950.1 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-036EXT:140.0-238.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 1.07
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: This intercept shows an exceptional copper equivalent grade over a significant length, highly material for resource definition and upgrade, with true width disclosed.

- Positive factor: Exceptional copper equivalent grade for porphyry

- Positive factor: Good intercept length

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 1.00

Context: 98.00

### ALD-26-036EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-9)

Altar Copper-Gold Project · gold

#### Identity

- Hole ID: ALD-26-036EXT
- Project: Altar Copper-Gold Project
- Commodity: gold
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.15
- Grade Unit: g/t
- Intercept: 98 m
- True Width: 98 m
- From: 140 m
- To: 238 m
- Hole Depth: 950.1 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-036EXT:140.0-238.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 1.07
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The gold grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low gold grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 0.15

Context: 98.00

### ALD-26-036EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-10)

Altar Copper-Gold Project · silver

#### Identity

- Hole ID: ALD-26-036EXT
- Project: Altar Copper-Gold Project
- Commodity: silver
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 2.19
- Grade Unit: g/t
- Intercept: 98 m
- True Width: 98 m
- From: 140 m
- To: 238 m
- Hole Depth: 950.1 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-036EXT:140.0-238.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 1.07
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The silver grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low silver grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 2.19

Context: 98.00

### ALD-26-036EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-11)

Altar Copper-Gold Project · molybdenum

#### Identity

- Hole ID: ALD-26-036EXT
- Project: Altar Copper-Gold Project
- Commodity: molybdenum
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 12
- Grade Unit: ppm
- Intercept: 98 m
- True Width: 98 m
- From: 140 m
- To: 238 m
- Hole Depth: 950.1 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-036EXT:140.0-238.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 1.07
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The molybdenum grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low molybdenum grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 12

Context: 98.00

### ALD-26-036EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-12)

Altar Copper-Gold Project · copper

#### Identity

- Hole ID: ALD-26-036EXT
- Project: Altar Copper-Gold Project
- Commodity: copper
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.63
- Grade Unit: %
- Intercept: 78 m
- True Width: 78 m
- From: 280 m
- To: 358 m
- Hole Depth: 950.1 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-036EXT:280.0-358.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.68
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: This intercept shows a strong copper equivalent grade over a good length, highly material for resource definition and upgrade, with true width disclosed.

- Positive factor: Strong copper equivalent grade for porphyry

- Positive factor: Good intercept length

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 0.63

Context: 78.00

### ALD-26-036EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-13)

Altar Copper-Gold Project · gold

#### Identity

- Hole ID: ALD-26-036EXT
- Project: Altar Copper-Gold Project
- Commodity: gold
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.13
- Grade Unit: g/t
- Intercept: 78 m
- True Width: 78 m
- From: 280 m
- To: 358 m
- Hole Depth: 950.1 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-036EXT:280.0-358.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.68
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The gold grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low gold grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 0.13

Context: 78.00

### ALD-26-036EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-14)

Altar Copper-Gold Project · silver

#### Identity

- Hole ID: ALD-26-036EXT
- Project: Altar Copper-Gold Project
- Commodity: silver
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 1.69
- Grade Unit: g/t
- Intercept: 78 m
- True Width: 78 m
- From: 280 m
- To: 358 m
- Hole Depth: 950.1 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-036EXT:280.0-358.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.68
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The silver grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low silver grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 1.69

Context: 78.00

### ALD-26-036EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-15)

Altar Copper-Gold Project · molybdenum

#### Identity

- Hole ID: ALD-26-036EXT
- Project: Altar Copper-Gold Project
- Commodity: molybdenum
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 5
- Grade Unit: ppm
- Intercept: 78 m
- True Width: 78 m
- From: 280 m
- To: 358 m
- Hole Depth: 950.1 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-036EXT:280.0-358.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.68
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The molybdenum grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low molybdenum grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 5

Context: 78.00

### ALD-26-036EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-16)

Altar Copper-Gold Project · copper

#### Identity

- Hole ID: ALD-26-036EXT
- Project: Altar Copper-Gold Project
- Commodity: copper
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.57
- Grade Unit: %
- Intercept: 42 m
- True Width: 42 m
- From: 416 m
- To: 458 m
- Hole Depth: 950.1 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-036EXT:416.0-458.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.61
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: This intercept shows a strong copper equivalent grade over a good length, material for resource definition and upgrade, with true width disclosed.

- Positive factor: Strong copper equivalent grade for porphyry

- Positive factor: Good intercept length

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 0.57

Context: 42.00

### ALD-26-036EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-17)

Altar Copper-Gold Project · gold

#### Identity

- Hole ID: ALD-26-036EXT
- Project: Altar Copper-Gold Project
- Commodity: gold
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.11
- Grade Unit: g/t
- Intercept: 42 m
- True Width: 42 m
- From: 416 m
- To: 458 m
- Hole Depth: 950.1 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-036EXT:416.0-458.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.61
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The gold grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low gold grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 0.11

Context: 42.00

### ALD-26-036EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-18)

Altar Copper-Gold Project · silver

#### Identity

- Hole ID: ALD-26-036EXT
- Project: Altar Copper-Gold Project
- Commodity: silver
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.87
- Grade Unit: g/t
- Intercept: 42 m
- True Width: 42 m
- From: 416 m
- To: 458 m
- Hole Depth: 950.1 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-036EXT:416.0-458.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.61
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The silver grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low silver grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 0.87

Context: 42.00

### ALD-26-036EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-19)

Altar Copper-Gold Project · molybdenum

#### Identity

- Hole ID: ALD-26-036EXT
- Project: Altar Copper-Gold Project
- Commodity: molybdenum
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 6
- Grade Unit: ppm
- Intercept: 42 m
- True Width: 42 m
- From: 416 m
- To: 458 m
- Hole Depth: 950.1 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-036EXT:416.0-458.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.61
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The molybdenum grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low molybdenum grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 6

Context: 42.00

### ALD-26-036EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-20)

Altar Copper-Gold Project · copper

#### Identity

- Hole ID: ALD-26-036EXT
- Project: Altar Copper-Gold Project
- Commodity: copper
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.59
- Grade Unit: %
- Intercept: 48 m
- True Width: 48 m
- From: 690 m
- To: 738 m
- Hole Depth: 950.1 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-036EXT:690.0-738.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.62
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: This intercept shows a strong copper equivalent grade over a good length, material for resource definition and upgrade, with true width disclosed.

- Positive factor: Strong copper equivalent grade for porphyry

- Positive factor: Good intercept length

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 0.59

Context: 48.00

### ALD-26-036EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-21)

Altar Copper-Gold Project · gold

#### Identity

- Hole ID: ALD-26-036EXT
- Project: Altar Copper-Gold Project
- Commodity: gold
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.08
- Grade Unit: g/t
- Intercept: 48 m
- True Width: 48 m
- From: 690 m
- To: 738 m
- Hole Depth: 950.1 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-036EXT:690.0-738.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.62
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The gold grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low gold grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 0.08

Context: 48.00

### ALD-26-036EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-22)

Altar Copper-Gold Project · silver

#### Identity

- Hole ID: ALD-26-036EXT
- Project: Altar Copper-Gold Project
- Commodity: silver
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 1.11
- Grade Unit: g/t
- Intercept: 48 m
- True Width: 48 m
- From: 690 m
- To: 738 m
- Hole Depth: 950.1 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-036EXT:690.0-738.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.62
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The silver grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low silver grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 1.11

Context: 48.00

### ALD-26-036EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-23)

Altar Copper-Gold Project · molybdenum

#### Identity

- Hole ID: ALD-26-036EXT
- Project: Altar Copper-Gold Project
- Commodity: molybdenum
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 4
- Grade Unit: ppm
- Intercept: 48 m
- True Width: 48 m
- From: 690 m
- To: 738 m
- Hole Depth: 950.1 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-036EXT:690.0-738.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.62
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The molybdenum grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low molybdenum grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 4

Context: 48.00

### ALD-25-173EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-24)

Altar Copper-Gold Project · copper

#### Identity

- Hole ID: ALD-25-173EXT
- Project: Altar Copper-Gold Project
- Commodity: copper
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.38
- Grade Unit: %
- Intercept: 1339.3 m
- True Width: 1339.3 m
- From: 12 m
- To: 1351.3 m
- Hole Depth: 1352.3 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-25-173EXT:12.0-1351.3
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.45
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: This exceptionally long intercept with a strong copper equivalent grade is highly material for resource definition and upgrade, with true width disclosed.

- Positive factor: Exceptional intercept length

- Positive factor: Strong copper equivalent grade for porphyry

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 0.38

Context: 1,339.30

### ALD-25-173EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-25)

Altar Copper-Gold Project · gold

#### Identity

- Hole ID: ALD-25-173EXT
- Project: Altar Copper-Gold Project
- Commodity: gold
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.18
- Grade Unit: g/t
- Intercept: 1339.3 m
- True Width: 1339.3 m
- From: 12 m
- To: 1351.3 m
- Hole Depth: 1352.3 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-25-173EXT:12.0-1351.3
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.45
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The gold grade is moderate for a porphyry deposit, contributing to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low gold grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 0.18

Context: 1,339.30

### ALD-25-173EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-26)

Altar Copper-Gold Project · silver

#### Identity

- Hole ID: ALD-25-173EXT
- Project: Altar Copper-Gold Project
- Commodity: silver
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 1.22
- Grade Unit: g/t
- Intercept: 1339.3 m
- True Width: 1339.3 m
- From: 12 m
- To: 1351.3 m
- Hole Depth: 1352.3 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-25-173EXT:12.0-1351.3
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.45
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The silver grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low silver grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 1.22

Context: 1,339.30

### ALD-25-173EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-27)

Altar Copper-Gold Project · molybdenum

#### Identity

- Hole ID: ALD-25-173EXT
- Project: Altar Copper-Gold Project
- Commodity: molybdenum
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 15
- Grade Unit: ppm
- Intercept: 1339.3 m
- True Width: 1339.3 m
- From: 12 m
- To: 1351.3 m
- Hole Depth: 1352.3 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-25-173EXT:12.0-1351.3
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.45
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The molybdenum grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low molybdenum grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 15

Context: 1,339.30

### ALD-25-173EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-28)

Altar Copper-Gold Project · copper

#### Identity

- Hole ID: ALD-25-173EXT
- Project: Altar Copper-Gold Project
- Commodity: copper
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.58
- Grade Unit: %
- Intercept: 500 m
- True Width: 500 m
- From: 326 m
- To: 826 m
- Hole Depth: 1352.3 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-25-173EXT:326.0-826.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.71
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: This exceptionally long intercept with an exceptional copper equivalent grade is highly material for resource definition and upgrade, with true width disclosed.

- Positive factor: Exceptional intercept length

- Positive factor: Exceptional copper equivalent grade for porphyry

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 0.58

Context: 500.00

### ALD-25-173EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-29)

Altar Copper-Gold Project · gold

#### Identity

- Hole ID: ALD-25-173EXT
- Project: Altar Copper-Gold Project
- Commodity: gold
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.35
- Grade Unit: g/t
- Intercept: 500 m
- True Width: 500 m
- From: 326 m
- To: 826 m
- Hole Depth: 1352.3 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-25-173EXT:326.0-826.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.71
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The gold grade is good for a porphyry deposit, contributing significantly to the overall CuEq value and resource definition.

- Positive factor: Good gold grade for porphyry

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 0.35

Context: 500.00

### ALD-25-173EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-30)

Altar Copper-Gold Project · silver

#### Identity

- Hole ID: ALD-25-173EXT
- Project: Altar Copper-Gold Project
- Commodity: silver
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 1.42
- Grade Unit: g/t
- Intercept: 500 m
- True Width: 500 m
- From: 326 m
- To: 826 m
- Hole Depth: 1352.3 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-25-173EXT:326.0-826.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.71
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The silver grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low silver grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 1.42

Context: 500.00

### ALD-25-173EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-31)

Altar Copper-Gold Project · molybdenum

#### Identity

- Hole ID: ALD-25-173EXT
- Project: Altar Copper-Gold Project
- Commodity: molybdenum
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 6
- Grade Unit: ppm
- Intercept: 500 m
- True Width: 500 m
- From: 326 m
- To: 826 m
- Hole Depth: 1352.3 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-25-173EXT:326.0-826.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.71
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The molybdenum grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low molybdenum grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 6

Context: 500.00

### ALD-25-173EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-32)

Altar Copper-Gold Project · copper

#### Identity

- Hole ID: ALD-25-173EXT
- Project: Altar Copper-Gold Project
- Commodity: copper
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.75
- Grade Unit: %
- Intercept: 96 m
- True Width: 96 m
- From: 436 m
- To: 532 m
- Hole Depth: 1352.3 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-25-173EXT:436.0-532.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.94
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: This intercept shows an exceptional copper equivalent grade over a significant length, highly material for resource definition and upgrade, with true width disclosed.

- Positive factor: Exceptional copper equivalent grade for porphyry

- Positive factor: Good intercept length

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 0.75

Context: 96.00

### ALD-25-173EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-33)

Altar Copper-Gold Project · gold

#### Identity

- Hole ID: ALD-25-173EXT
- Project: Altar Copper-Gold Project
- Commodity: gold
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.54
- Grade Unit: g/t
- Intercept: 96 m
- True Width: 96 m
- From: 436 m
- To: 532 m
- Hole Depth: 1352.3 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-25-173EXT:436.0-532.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.94
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The gold grade is strong for a porphyry deposit, contributing significantly to the overall CuEq value and resource definition.

- Positive factor: Strong gold grade for porphyry

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 0.54

Context: 96.00

### ALD-25-173EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-34)

Altar Copper-Gold Project · silver

#### Identity

- Hole ID: ALD-25-173EXT
- Project: Altar Copper-Gold Project
- Commodity: silver
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 1.49
- Grade Unit: g/t
- Intercept: 96 m
- True Width: 96 m
- From: 436 m
- To: 532 m
- Hole Depth: 1352.3 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-25-173EXT:436.0-532.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.94
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The silver grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low silver grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 1.49

Context: 96.00

### ALD-25-173EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-35)

Altar Copper-Gold Project · molybdenum

#### Identity

- Hole ID: ALD-25-173EXT
- Project: Altar Copper-Gold Project
- Commodity: molybdenum
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 8
- Grade Unit: ppm
- Intercept: 96 m
- True Width: 96 m
- From: 436 m
- To: 532 m
- Hole Depth: 1352.3 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-25-173EXT:436.0-532.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.94
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The molybdenum grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low molybdenum grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 8

Context: 96.00

### ALD-25-173EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-36)

Altar Copper-Gold Project · copper

#### Identity

- Hole ID: ALD-25-173EXT
- Project: Altar Copper-Gold Project
- Commodity: copper
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.85
- Grade Unit: %
- Intercept: 60 m
- True Width: 60 m
- From: 606 m
- To: 666 m
- Hole Depth: 1352.3 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-25-173EXT:606.0-666.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 1
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: This intercept shows an exceptional copper equivalent grade over a significant length, highly material for resource definition and upgrade, with true width disclosed.

- Positive factor: Exceptional copper equivalent grade for porphyry

- Positive factor: Good intercept length

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 0.85

Context: 60.00

### ALD-25-173EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-37)

Altar Copper-Gold Project · gold

#### Identity

- Hole ID: ALD-25-173EXT
- Project: Altar Copper-Gold Project
- Commodity: gold
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.42
- Grade Unit: g/t
- Intercept: 60 m
- True Width: 60 m
- From: 606 m
- To: 666 m
- Hole Depth: 1352.3 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-25-173EXT:606.0-666.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 1
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The gold grade is good for a porphyry deposit, contributing significantly to the overall CuEq value and resource definition.

- Positive factor: Good gold grade for porphyry

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 0.42

Context: 60.00

### ALD-25-173EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-38)

Altar Copper-Gold Project · silver

#### Identity

- Hole ID: ALD-25-173EXT
- Project: Altar Copper-Gold Project
- Commodity: silver
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 2.17
- Grade Unit: g/t
- Intercept: 60 m
- True Width: 60 m
- From: 606 m
- To: 666 m
- Hole Depth: 1352.3 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-25-173EXT:606.0-666.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 1
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The silver grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low silver grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 2.17

Context: 60.00

### ALD-25-173EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-39)

Altar Copper-Gold Project · molybdenum

#### Identity

- Hole ID: ALD-25-173EXT
- Project: Altar Copper-Gold Project
- Commodity: molybdenum
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 8
- Grade Unit: ppm
- Intercept: 60 m
- True Width: 60 m
- From: 606 m
- To: 666 m
- Hole Depth: 1352.3 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-25-173EXT:606.0-666.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 1
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The molybdenum grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low molybdenum grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 8

Context: 60.00

### ALD-26-174EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-40)

Altar Copper-Gold Project · copper

#### Identity

- Hole ID: ALD-26-174EXT
- Project: Altar Copper-Gold Project
- Commodity: copper
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.39
- Grade Unit: %
- Intercept: 1198 m
- True Width: 1198 m
- From: 92 m
- To: 1290 m
- Hole Depth: 1290 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-174EXT:92.0-1290.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.43
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: This exceptionally long intercept with a strong copper equivalent grade is highly material for resource definition and upgrade, with true width disclosed.

- Positive factor: Exceptional intercept length

- Positive factor: Strong copper equivalent grade for porphyry

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 0.39

Context: 1,198.00

### ALD-26-174EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-41)

Altar Copper-Gold Project · gold

#### Identity

- Hole ID: ALD-26-174EXT
- Project: Altar Copper-Gold Project
- Commodity: gold
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.09
- Grade Unit: g/t
- Intercept: 1198 m
- True Width: 1198 m
- From: 92 m
- To: 1290 m
- Hole Depth: 1290 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-174EXT:92.0-1290.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.43
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The gold grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low gold grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 0.09

Context: 1,198.00

### ALD-26-174EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-42)

Altar Copper-Gold Project · silver

#### Identity

- Hole ID: ALD-26-174EXT
- Project: Altar Copper-Gold Project
- Commodity: silver
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 1.11
- Grade Unit: g/t
- Intercept: 1198 m
- True Width: 1198 m
- From: 92 m
- To: 1290 m
- Hole Depth: 1290 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-174EXT:92.0-1290.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.43
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The silver grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low silver grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 1.11

Context: 1,198.00

### ALD-26-174EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-43)

Altar Copper-Gold Project · molybdenum

#### Identity

- Hole ID: ALD-26-174EXT
- Project: Altar Copper-Gold Project
- Commodity: molybdenum
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 33
- Grade Unit: ppm
- Intercept: 1198 m
- True Width: 1198 m
- From: 92 m
- To: 1290 m
- Hole Depth: 1290 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-174EXT:92.0-1290.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.43
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The molybdenum grade is moderate for a porphyry deposit, contributing to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low molybdenum grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 33

Context: 1,198.00

### ALD-26-174EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-44)

Altar Copper-Gold Project · copper

#### Identity

- Hole ID: ALD-26-174EXT
- Project: Altar Copper-Gold Project
- Commodity: copper
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.57
- Grade Unit: %
- Intercept: 388 m
- True Width: 388 m
- From: 530 m
- To: 918 m
- Hole Depth: 1290 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-174EXT:530.0-918.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.63
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: This exceptionally long intercept with a strong copper equivalent grade is highly material for resource definition and upgrade, with true width disclosed.

- Positive factor: Exceptional intercept length

- Positive factor: Strong copper equivalent grade for porphyry

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 0.57

Context: 388.00

### ALD-26-174EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-45)

Altar Copper-Gold Project · gold

#### Identity

- Hole ID: ALD-26-174EXT
- Project: Altar Copper-Gold Project
- Commodity: gold
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.15
- Grade Unit: g/t
- Intercept: 388 m
- True Width: 388 m
- From: 530 m
- To: 918 m
- Hole Depth: 1290 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-174EXT:530.0-918.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.63
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The gold grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low gold grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 0.15

Context: 388.00

### ALD-26-174EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-46)

Altar Copper-Gold Project · silver

#### Identity

- Hole ID: ALD-26-174EXT
- Project: Altar Copper-Gold Project
- Commodity: silver
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 1.63
- Grade Unit: g/t
- Intercept: 388 m
- True Width: 388 m
- From: 530 m
- To: 918 m
- Hole Depth: 1290 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-174EXT:530.0-918.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.63
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The silver grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low silver grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 1.63

Context: 388.00

### ALD-26-174EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-47)

Altar Copper-Gold Project · molybdenum

#### Identity

- Hole ID: ALD-26-174EXT
- Project: Altar Copper-Gold Project
- Commodity: molybdenum
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 19
- Grade Unit: ppm
- Intercept: 388 m
- True Width: 388 m
- From: 530 m
- To: 918 m
- Hole Depth: 1290 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-174EXT:530.0-918.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.63
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The molybdenum grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low molybdenum grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 19

Context: 388.00

### ALD-26-180EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-48)

Altar Copper-Gold Project · copper

#### Identity

- Hole ID: ALD-26-180EXT
- Project: Altar Copper-Gold Project
- Commodity: copper
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.25
- Grade Unit: %
- Intercept: 895 m
- True Width: 895 m
- From: 496 m
- To: 1391 m
- Hole Depth: 1391 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-180EXT:496.0-1391.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.28
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: This exceptionally long intercept with a moderate copper equivalent grade is material for resource definition and upgrade, with true width disclosed.

- Positive factor: Exceptional intercept length

- Positive factor: Moderate copper equivalent grade for porphyry

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 0.25

Context: 895.00

### ALD-26-180EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-49)

Altar Copper-Gold Project · gold

#### Identity

- Hole ID: ALD-26-180EXT
- Project: Altar Copper-Gold Project
- Commodity: gold
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.05
- Grade Unit: g/t
- Intercept: 895 m
- True Width: 895 m
- From: 496 m
- To: 1391 m
- Hole Depth: 1391 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-180EXT:496.0-1391.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.28
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The gold grade is weak for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Weak gold grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 0.05

Context: 895.00

### ALD-26-180EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-50)

Altar Copper-Gold Project · silver

#### Identity

- Hole ID: ALD-26-180EXT
- Project: Altar Copper-Gold Project
- Commodity: silver
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 1.02
- Grade Unit: g/t
- Intercept: 895 m
- True Width: 895 m
- From: 496 m
- To: 1391 m
- Hole Depth: 1391 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-180EXT:496.0-1391.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.28
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The silver grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low silver grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 1.02

Context: 895.00

### ALD-26-180EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-51)

Altar Copper-Gold Project · molybdenum

#### Identity

- Hole ID: ALD-26-180EXT
- Project: Altar Copper-Gold Project
- Commodity: molybdenum
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 48
- Grade Unit: ppm
- Intercept: 895 m
- True Width: 895 m
- From: 496 m
- To: 1391 m
- Hole Depth: 1391 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-180EXT:496.0-1391.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.28
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The molybdenum grade is moderate for a porphyry deposit, contributing to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low molybdenum grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 48

Context: 895.00

### ALD-26-187D Ext

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-52)

Altar Copper-Gold Project · copper

#### Identity

- Hole ID: ALD-26-187D Ext
- Project: Altar Copper-Gold Project
- Commodity: copper
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.33
- Grade Unit: %
- Intercept: 934 m
- True Width: 934 m
- From: 324 m
- To: 1258 m
- Hole Depth: 1258 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-187D Ext:324.0-1258.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.37
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: This exceptionally long intercept with a moderate copper equivalent grade is material for resource definition and upgrade, with true width disclosed.

- Positive factor: Exceptional intercept length

- Positive factor: Moderate copper equivalent grade for porphyry

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 0.33

Context: 934.00

### ALD-26-187D Ext

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-53)

Altar Copper-Gold Project · gold

#### Identity

- Hole ID: ALD-26-187D Ext
- Project: Altar Copper-Gold Project
- Commodity: gold
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.05
- Grade Unit: g/t
- Intercept: 934 m
- True Width: 934 m
- From: 324 m
- To: 1258 m
- Hole Depth: 1258 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-187D Ext:324.0-1258.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.37
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The gold grade is weak for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Weak gold grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 0.05

Context: 934.00

### ALD-26-187D Ext

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-54)

Altar Copper-Gold Project · silver

#### Identity

- Hole ID: ALD-26-187D Ext
- Project: Altar Copper-Gold Project
- Commodity: silver
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.76
- Grade Unit: g/t
- Intercept: 934 m
- True Width: 934 m
- From: 324 m
- To: 1258 m
- Hole Depth: 1258 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-187D Ext:324.0-1258.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.37
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The silver grade is weak for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Weak silver grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 0.76

Context: 934.00

### ALD-26-187D Ext

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-55)

Altar Copper-Gold Project · molybdenum

#### Identity

- Hole ID: ALD-26-187D Ext
- Project: Altar Copper-Gold Project
- Commodity: molybdenum
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 89
- Grade Unit: ppm
- Intercept: 934 m
- True Width: 934 m
- From: 324 m
- To: 1258 m
- Hole Depth: 1258 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-187D Ext:324.0-1258.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.37
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The molybdenum grade is moderate for a porphyry deposit, contributing to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low molybdenum grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 89

Context: 934.00

### ALD-26-187D Ext

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-56)

Altar Copper-Gold Project · copper

#### Identity

- Hole ID: ALD-26-187D Ext
- Project: Altar Copper-Gold Project
- Commodity: copper
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.54
- Grade Unit: %
- Intercept: 50 m
- True Width: 50 m
- From: 475 m
- To: 525 m
- Hole Depth: 1258 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-187D Ext:475.0-525.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.6
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: This intercept shows a strong copper equivalent grade over a good length, material for resource definition and upgrade, with true width disclosed.

- Positive factor: Strong copper equivalent grade for porphyry

- Positive factor: Good intercept length

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 0.54

Context: 50.00

### ALD-26-187D Ext

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-57)

Altar Copper-Gold Project · gold

#### Identity

- Hole ID: ALD-26-187D Ext
- Project: Altar Copper-Gold Project
- Commodity: gold
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.13
- Grade Unit: g/t
- Intercept: 50 m
- True Width: 50 m
- From: 475 m
- To: 525 m
- Hole Depth: 1258 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-187D Ext:475.0-525.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.6
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The gold grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low gold grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 0.13

Context: 50.00

### ALD-26-187D Ext

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-58)

Altar Copper-Gold Project · silver

#### Identity

- Hole ID: ALD-26-187D Ext
- Project: Altar Copper-Gold Project
- Commodity: silver
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 1.13
- Grade Unit: g/t
- Intercept: 50 m
- True Width: 50 m
- From: 475 m
- To: 525 m
- Hole Depth: 1258 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-187D Ext:475.0-525.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.6
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The silver grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low silver grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 1.13

Context: 50.00

### ALD-26-187D Ext

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-59)

Altar Copper-Gold Project · molybdenum

#### Identity

- Hole ID: ALD-26-187D Ext
- Project: Altar Copper-Gold Project
- Commodity: molybdenum
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 21
- Grade Unit: ppm
- Intercept: 50 m
- True Width: 50 m
- From: 475 m
- To: 525 m
- Hole Depth: 1258 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-187D Ext:475.0-525.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.6
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The molybdenum grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low molybdenum grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 21

Context: 50.00

### ALD-26-199EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-60)

Altar Copper-Gold Project · copper

#### Identity

- Hole ID: ALD-26-199EXT
- Project: Altar Copper-Gold Project
- Commodity: copper
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.47
- Grade Unit: %
- Intercept: 1059.2 m
- True Width: 1059.2 m
- From: 326 m
- To: 1385.2 m
- Hole Depth: 1385.2 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-199EXT:326.0-1385.2
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.51
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: This exceptionally long intercept with a strong copper equivalent grade is highly material for resource definition and upgrade, with true width disclosed.

- Positive factor: Exceptional intercept length

- Positive factor: Strong copper equivalent grade for porphyry

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 0.47

Context: 1,059.20

### ALD-26-199EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-61)

Altar Copper-Gold Project · gold

#### Identity

- Hole ID: ALD-26-199EXT
- Project: Altar Copper-Gold Project
- Commodity: gold
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.04
- Grade Unit: g/t
- Intercept: 1059.2 m
- True Width: 1059.2 m
- From: 326 m
- To: 1385.2 m
- Hole Depth: 1385.2 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-199EXT:326.0-1385.2
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.51
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The gold grade is weak for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Weak gold grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 0.04

Context: 1,059.20

### ALD-26-199EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-62)

Altar Copper-Gold Project · silver

#### Identity

- Hole ID: ALD-26-199EXT
- Project: Altar Copper-Gold Project
- Commodity: silver
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 1.65
- Grade Unit: g/t
- Intercept: 1059.2 m
- True Width: 1059.2 m
- From: 326 m
- To: 1385.2 m
- Hole Depth: 1385.2 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-199EXT:326.0-1385.2
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.51
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The silver grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low silver grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 1.65

Context: 1,059.20

### ALD-26-199EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-63)

Altar Copper-Gold Project · molybdenum

#### Identity

- Hole ID: ALD-26-199EXT
- Project: Altar Copper-Gold Project
- Commodity: molybdenum
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 85
- Grade Unit: ppm
- Intercept: 1059.2 m
- True Width: 1059.2 m
- From: 326 m
- To: 1385.2 m
- Hole Depth: 1385.2 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-199EXT:326.0-1385.2
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.51
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The molybdenum grade is moderate for a porphyry deposit, contributing to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low molybdenum grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 85

Context: 1,059.20

### ALD-26-199EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-64)

Altar Copper-Gold Project · copper

#### Identity

- Hole ID: ALD-26-199EXT
- Project: Altar Copper-Gold Project
- Commodity: copper
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.64
- Grade Unit: %
- Intercept: 32 m
- True Width: 32 m
- From: 326 m
- To: 358 m
- Hole Depth: 1385.2 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-199EXT:326.0-358.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.68
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: This intercept shows a strong copper equivalent grade over a good length, material for resource definition and upgrade, with true width disclosed.

- Positive factor: Strong copper equivalent grade for porphyry

- Positive factor: Good intercept length

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 0.64

Context: 32.00

### ALD-26-199EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-65)

Altar Copper-Gold Project · gold

#### Identity

- Hole ID: ALD-26-199EXT
- Project: Altar Copper-Gold Project
- Commodity: gold
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.12
- Grade Unit: g/t
- Intercept: 32 m
- True Width: 32 m
- From: 326 m
- To: 358 m
- Hole Depth: 1385.2 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-199EXT:326.0-358.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.68
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The gold grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low gold grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 0.12

Context: 32.00

### ALD-26-199EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-66)

Altar Copper-Gold Project · silver

#### Identity

- Hole ID: ALD-26-199EXT
- Project: Altar Copper-Gold Project
- Commodity: silver
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.48
- Grade Unit: g/t
- Intercept: 32 m
- True Width: 32 m
- From: 326 m
- To: 358 m
- Hole Depth: 1385.2 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-199EXT:326.0-358.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.68
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The silver grade is weak for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Weak silver grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 0.48

Context: 32.00

### ALD-26-199EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-67)

Altar Copper-Gold Project · molybdenum

#### Identity

- Hole ID: ALD-26-199EXT
- Project: Altar Copper-Gold Project
- Commodity: molybdenum
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 6
- Grade Unit: ppm
- Intercept: 32 m
- True Width: 32 m
- From: 326 m
- To: 358 m
- Hole Depth: 1385.2 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-199EXT:326.0-358.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.68
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The molybdenum grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low molybdenum grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 6

Context: 32.00

### ALD-26-199EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-68)

Altar Copper-Gold Project · copper

#### Identity

- Hole ID: ALD-26-199EXT
- Project: Altar Copper-Gold Project
- Commodity: copper
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.57
- Grade Unit: %
- Intercept: 221.5 m
- True Width: 221.5 m
- From: 868.5 m
- To: 1090 m
- Hole Depth: 1385.2 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-199EXT:868.5-1090.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.61
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: This exceptionally long intercept with a strong copper equivalent grade is highly material for resource definition and upgrade, with true width disclosed.

- Positive factor: Exceptional intercept length

- Positive factor: Strong copper equivalent grade for porphyry

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 0.57

Context: 221.50

### ALD-26-199EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-69)

Altar Copper-Gold Project · gold

#### Identity

- Hole ID: ALD-26-199EXT
- Project: Altar Copper-Gold Project
- Commodity: gold
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.02
- Grade Unit: g/t
- Intercept: 221.5 m
- True Width: 221.5 m
- From: 868.5 m
- To: 1090 m
- Hole Depth: 1385.2 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-199EXT:868.5-1090.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.61
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The gold grade is weak for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Weak gold grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 0.02

Context: 221.50

### ALD-26-199EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-70)

Altar Copper-Gold Project · silver

#### Identity

- Hole ID: ALD-26-199EXT
- Project: Altar Copper-Gold Project
- Commodity: silver
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 2.11
- Grade Unit: g/t
- Intercept: 221.5 m
- True Width: 221.5 m
- From: 868.5 m
- To: 1090 m
- Hole Depth: 1385.2 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-199EXT:868.5-1090.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.61
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The silver grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low silver grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 2.11

Context: 221.50

### ALD-26-199EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-71)

Altar Copper-Gold Project · molybdenum

#### Identity

- Hole ID: ALD-26-199EXT
- Project: Altar Copper-Gold Project
- Commodity: molybdenum
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 92
- Grade Unit: ppm
- Intercept: 221.5 m
- True Width: 221.5 m
- From: 868.5 m
- To: 1090 m
- Hole Depth: 1385.2 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-199EXT:868.5-1090.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.61
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The molybdenum grade is moderate for a porphyry deposit, contributing to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low molybdenum grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 92

Context: 221.50

### ALD-26-199EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-72)

Altar Copper-Gold Project · copper

#### Identity

- Hole ID: ALD-26-199EXT
- Project: Altar Copper-Gold Project
- Commodity: copper
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.65
- Grade Unit: %
- Intercept: 249.2 m
- True Width: 249.2 m
- From: 1136 m
- To: 1385.2 m
- Hole Depth: 1385.2 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-199EXT:1136.0-1385.2
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.71
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: This exceptionally long intercept with an exceptional copper equivalent grade is highly material for resource definition and upgrade, with true width disclosed.

- Positive factor: Exceptional intercept length

- Positive factor: Exceptional copper equivalent grade for porphyry

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 0.65

Context: 249.20

### ALD-26-199EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-73)

Altar Copper-Gold Project · gold

#### Identity

- Hole ID: ALD-26-199EXT
- Project: Altar Copper-Gold Project
- Commodity: gold
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.03
- Grade Unit: g/t
- Intercept: 249.2 m
- True Width: 249.2 m
- From: 1136 m
- To: 1385.2 m
- Hole Depth: 1385.2 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-199EXT:1136.0-1385.2
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.71
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The gold grade is weak for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Weak gold grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 0.03

Context: 249.20

### ALD-26-199EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-74)

Altar Copper-Gold Project · silver

#### Identity

- Hole ID: ALD-26-199EXT
- Project: Altar Copper-Gold Project
- Commodity: silver
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 1.92
- Grade Unit: g/t
- Intercept: 249.2 m
- True Width: 249.2 m
- From: 1136 m
- To: 1385.2 m
- Hole Depth: 1385.2 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-199EXT:1136.0-1385.2
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.71
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The silver grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low silver grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 1.92

Context: 249.20

### ALD-26-199EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-75)

Altar Copper-Gold Project · molybdenum

#### Identity

- Hole ID: ALD-26-199EXT
- Project: Altar Copper-Gold Project
- Commodity: molybdenum
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 186
- Grade Unit: ppm
- Intercept: 249.2 m
- True Width: 249.2 m
- From: 1136 m
- To: 1385.2 m
- Hole Depth: 1385.2 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-199EXT:1136.0-1385.2
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.71
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The molybdenum grade is good for a porphyry deposit, contributing significantly to the overall CuEq value and resource definition.

- Positive factor: Good molybdenum grade for porphyry

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 186

Context: 249.20

### ALD-26-199EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-76)

Altar Copper-Gold Project · copper

#### Identity

- Hole ID: ALD-26-199EXT
- Project: Altar Copper-Gold Project
- Commodity: copper
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.81
- Grade Unit: %
- Intercept: 54 m
- True Width: 54 m
- From: 1270 m
- To: 1324 m
- Hole Depth: 1385.2 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-199EXT:1270.0-1324.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.92
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: This intercept shows an exceptional copper equivalent grade over a significant length, highly material for resource definition and upgrade, with true width disclosed.

- Positive factor: Exceptional copper equivalent grade for porphyry

- Positive factor: Good intercept length

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 0.81

Context: 54.00

### ALD-26-199EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-77)

Altar Copper-Gold Project · gold

#### Identity

- Hole ID: ALD-26-199EXT
- Project: Altar Copper-Gold Project
- Commodity: gold
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.03
- Grade Unit: g/t
- Intercept: 54 m
- True Width: 54 m
- From: 1270 m
- To: 1324 m
- Hole Depth: 1385.2 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-199EXT:1270.0-1324.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.92
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The gold grade is weak for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Weak gold grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 0.03

Context: 54.00

### ALD-26-199EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-78)

Altar Copper-Gold Project · silver

#### Identity

- Hole ID: ALD-26-199EXT
- Project: Altar Copper-Gold Project
- Commodity: silver
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 1.82
- Grade Unit: g/t
- Intercept: 54 m
- True Width: 54 m
- From: 1270 m
- To: 1324 m
- Hole Depth: 1385.2 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-199EXT:1270.0-1324.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.92
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The silver grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low silver grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 1.82

Context: 54.00

### ALD-26-199EXT

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-79)

Altar Copper-Gold Project · molybdenum

#### Identity

- Hole ID: ALD-26-199EXT
- Project: Altar Copper-Gold Project
- Commodity: molybdenum
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 382
- Grade Unit: ppm
- Intercept: 54 m
- True Width: 54 m
- From: 1270 m
- To: 1324 m
- Hole Depth: 1385.2 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-199EXT:1270.0-1324.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.92
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The molybdenum grade is strong for a porphyry deposit, contributing significantly to the overall CuEq value and resource definition.

- Positive factor: Strong molybdenum grade for porphyry

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 382

Context: 54.00

### ALD-26-259

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-80)

Altar Copper-Gold Project · copper

#### Identity

- Hole ID: ALD-26-259
- Project: Altar Copper-Gold Project
- Commodity: copper
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.42
- Grade Unit: %
- Intercept: 513 m
- True Width: 513 m
- From: 924 m
- To: 1437 m
- Hole Depth: 1292 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-259:924.0-1437.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.47
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: This exceptionally long intercept with a strong copper equivalent grade is highly material for resource definition and upgrade, with true width disclosed.

- Positive factor: Exceptional intercept length

- Positive factor: Strong copper equivalent grade for porphyry

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 0.42

Context: 513.00

### ALD-26-259

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-81)

Altar Copper-Gold Project · gold

#### Identity

- Hole ID: ALD-26-259
- Project: Altar Copper-Gold Project
- Commodity: gold
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.04
- Grade Unit: g/t
- Intercept: 513 m
- True Width: 513 m
- From: 924 m
- To: 1437 m
- Hole Depth: 1292 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-259:924.0-1437.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.47
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The gold grade is weak for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Weak gold grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 0.04

Context: 513.00

### ALD-26-259

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-82)

Altar Copper-Gold Project · silver

#### Identity

- Hole ID: ALD-26-259
- Project: Altar Copper-Gold Project
- Commodity: silver
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 1.22
- Grade Unit: g/t
- Intercept: 513 m
- True Width: 513 m
- From: 924 m
- To: 1437 m
- Hole Depth: 1292 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-259:924.0-1437.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.47
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The silver grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low silver grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 1.22

Context: 513.00

### ALD-26-259

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-83)

Altar Copper-Gold Project · molybdenum

#### Identity

- Hole ID: ALD-26-259
- Project: Altar Copper-Gold Project
- Commodity: molybdenum
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 158
- Grade Unit: ppm
- Intercept: 513 m
- True Width: 513 m
- From: 924 m
- To: 1437 m
- Hole Depth: 1292 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-259:924.0-1437.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.47
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The molybdenum grade is good for a porphyry deposit, contributing significantly to the overall CuEq value and resource definition.

- Positive factor: Good molybdenum grade for porphyry

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 158

Context: 513.00

### ALD-26-259

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-84)

Altar Copper-Gold Project · copper

#### Identity

- Hole ID: ALD-26-259
- Project: Altar Copper-Gold Project
- Commodity: copper
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.47
- Grade Unit: %
- Intercept: 42 m
- True Width: 42 m
- From: 1120 m
- To: 1162 m
- Hole Depth: 1292 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-259:1120.0-1162.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.55
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: This intercept shows a strong copper equivalent grade over a good length, material for resource definition and upgrade, with true width disclosed.

- Positive factor: Strong copper equivalent grade for porphyry

- Positive factor: Good intercept length

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 0.47

Context: 42.00

### ALD-26-259

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-85)

Altar Copper-Gold Project · gold

#### Identity

- Hole ID: ALD-26-259
- Project: Altar Copper-Gold Project
- Commodity: gold
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.04
- Grade Unit: g/t
- Intercept: 42 m
- True Width: 42 m
- From: 1120 m
- To: 1162 m
- Hole Depth: 1292 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-259:1120.0-1162.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.55
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The gold grade is weak for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Weak gold grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 0.04

Context: 42.00

### ALD-26-259

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-86)

Altar Copper-Gold Project · silver

#### Identity

- Hole ID: ALD-26-259
- Project: Altar Copper-Gold Project
- Commodity: silver
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 2.42
- Grade Unit: g/t
- Intercept: 42 m
- True Width: 42 m
- From: 1120 m
- To: 1162 m
- Hole Depth: 1292 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-259:1120.0-1162.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.55
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The silver grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low silver grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 2.42

Context: 42.00

### ALD-26-259

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-87)

Altar Copper-Gold Project · molybdenum

#### Identity

- Hole ID: ALD-26-259
- Project: Altar Copper-Gold Project
- Commodity: molybdenum
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 244
- Grade Unit: ppm
- Intercept: 42 m
- True Width: 42 m
- From: 1120 m
- To: 1162 m
- Hole Depth: 1292 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-259:1120.0-1162.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.55
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The molybdenum grade is good for a porphyry deposit, contributing significantly to the overall CuEq value and resource definition.

- Positive factor: Good molybdenum grade for porphyry

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 244

Context: 42.00

### ALD-26-259

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-88)

Altar Copper-Gold Project · copper

#### Identity

- Hole ID: ALD-26-259
- Project: Altar Copper-Gold Project
- Commodity: copper
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.49
- Grade Unit: %
- Intercept: 94 m
- True Width: 94 m
- From: 1202 m
- To: 1296 m
- Hole Depth: 1292 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-259:1202.0-1296.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.56
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: This intercept shows a strong copper equivalent grade over a good length, material for resource definition and upgrade, with true width disclosed.

- Positive factor: Strong copper equivalent grade for porphyry

- Positive factor: Good intercept length

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 0.49

Context: 94.00

### ALD-26-259

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-89)

Altar Copper-Gold Project · gold

#### Identity

- Hole ID: ALD-26-259
- Project: Altar Copper-Gold Project
- Commodity: gold
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.04
- Grade Unit: g/t
- Intercept: 94 m
- True Width: 94 m
- From: 1202 m
- To: 1296 m
- Hole Depth: 1292 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-259:1202.0-1296.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.56
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The gold grade is weak for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Weak gold grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 0.04

Context: 94.00

### ALD-26-259

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-90)

Altar Copper-Gold Project · silver

#### Identity

- Hole ID: ALD-26-259
- Project: Altar Copper-Gold Project
- Commodity: silver
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 1.28
- Grade Unit: g/t
- Intercept: 94 m
- True Width: 94 m
- From: 1202 m
- To: 1296 m
- Hole Depth: 1292 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-259:1202.0-1296.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.56
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The silver grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low silver grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 1.28

Context: 94.00

### ALD-26-259

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-91)

Altar Copper-Gold Project · molybdenum

#### Identity

- Hole ID: ALD-26-259
- Project: Altar Copper-Gold Project
- Commodity: molybdenum
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 194
- Grade Unit: ppm
- Intercept: 94 m
- True Width: 94 m
- From: 1202 m
- To: 1296 m
- Hole Depth: 1292 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-259:1202.0-1296.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.56
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The molybdenum grade is good for a porphyry deposit, contributing significantly to the overall CuEq value and resource definition.

- Positive factor: Good molybdenum grade for porphyry

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 194

Context: 94.00

### ALD-26-259

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-92)

Altar Copper-Gold Project · copper

#### Identity

- Hole ID: ALD-26-259
- Project: Altar Copper-Gold Project
- Commodity: copper
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.55
- Grade Unit: %
- Intercept: 59 m
- True Width: 59 m
- From: 1378 m
- To: 1437 m
- Hole Depth: 1292 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-259:1378.0-1437.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.62
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: This intercept shows a strong copper equivalent grade over a good length, material for resource definition and upgrade, with true width disclosed.

- Positive factor: Strong copper equivalent grade for porphyry

- Positive factor: Good intercept length

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 0.55

Context: 59.00

### ALD-26-259

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-93)

Altar Copper-Gold Project · gold

#### Identity

- Hole ID: ALD-26-259
- Project: Altar Copper-Gold Project
- Commodity: gold
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 0.04
- Grade Unit: g/t
- Intercept: 59 m
- True Width: 59 m
- From: 1378 m
- To: 1437 m
- Hole Depth: 1292 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-259:1378.0-1437.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.62
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The gold grade is weak for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Weak gold grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 0.04

Context: 59.00

### ALD-26-259

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-94)

Altar Copper-Gold Project · silver

#### Identity

- Hole ID: ALD-26-259
- Project: Altar Copper-Gold Project
- Commodity: silver
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 1.69
- Grade Unit: g/t
- Intercept: 59 m
- True Width: 59 m
- From: 1378 m
- To: 1437 m
- Hole Depth: 1292 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-259:1378.0-1437.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.62
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The silver grade is low for a porphyry deposit, but contributes to the overall CuEq value and resource definition.

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Low silver grade for porphyry

- Negative factor: Presence of arsenic

Evidence · table

> 1.69

Context: 59.00

### ALD-26-259

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-reports-1-339-30-m-of-0-45-cueq-0-38-cu-0-14-g-t-au-2-54-g-t-ag-includ--d0642fa8-3eb1-4b32-ab70-e4b1271b754c#fact-drill-facts-95)

Altar Copper-Gold Project · molybdenum

#### Identity

- Hole ID: ALD-26-259
- Project: Altar Copper-Gold Project
- Commodity: molybdenum
- Region: argentina
- Reported Region: San Juan, Argentina
- Ticker: ALDE

#### Geometry

- Grade: 221
- Grade Unit: ppm
- Intercept: 59 m
- True Width: 59 m
- From: 1378 m
- To: 1437 m
- Hole Depth: 1292 m

#### Classification

- Deposit Type: porphyry
- Program: resource
- Sample Type: drill
- Group ID: ALD-26-259:1378.0-1437.0
- Mining Method: open\_pit

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Deleterious

- Deleterious Flag: Yes
- Deleterious Elements: arsenic

#### Metal Equivalent

- Metal Eq. Grade: 0.62
- Metal Eq. Unit: % CuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-05-21T00:00:00.000Z

Reasoning: The molybdenum grade is good for a porphyry deposit, contributing significantly to the overall CuEq value and resource definition.

- Positive factor: Good molybdenum grade for porphyry

- Positive factor: True width disclosed

- Positive factor: Infill drilling for resource upgrade

- Negative factor: Presence of arsenic

Evidence · table

> 221

Context: 59.00

## How Atlas produces this analysis

Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.