Aldebaran and Centauri Announce Significant Increase in Mineral Resources for the Rio Grande Gold-Copper Project in Salta, Argentina
Original announcement by tmx on
- Company
- Aldebaran Resources Inc.
- Ticker
- ALDE
- Exchange
- TSX
- Region
- Salta, Argentina
- Primary commodity
- Gold
- Secondary commodities
- Copper, Silver
- Document categories
- Resource update
- Extracted
- 2026-08-21 01:39:18 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Aldebaran and Centauri have announced an updated Mineral Resource Estimate for the Rio Grande gold-copper project in Argentina. The estimate includes 1.45 million ounces of gold and 384,000 tonnes of copper in Indicated resources, and 1.55 million ounces of gold in Inferred resources.
Reasoning: The update provides a substantial mineral resource inventory for the Rio Grande project, though it relies on historical data without recent drilling to upgrade confidence.
Positive factors
- Significant contained metal inventory
- NI 43-101 compliant
- QP signed off
- Open exploration potential
Negative factors
- Stale data (no new drilling since 2013)
- High proportion of Inferred resources
- Low grade/tonnage profile
Facts used in scoring: 24
Classification and evidence
NI 43-101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: The Mineral Resource Estimate was prepared to comply with NI 43-101 standards by SLR Consulting.
Evidence · text
“complete a National Instrument (“NI”) 43-101 Technical Report and Mineral Resource Estimate update”
QP/CP Signedpositive
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: Mr. Benjamin Sanfurgo, an independent qualified person, has reviewed and approved the technical information.
Evidence · text
“Mr. Sanfurgo is an independent qualified person (“QP”) as defined by NI 43-101.”
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: A significant portion of the resource (220.8 Mt) is classified as Inferred.
Evidence · text
“Inferred Resources containing 1.55 million ounces of gold”
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: The report discloses NSR cut-off grades for oxide, transitional, and sulphide material.
Evidence · text
“Mineral Resources are estimated at a net smelter return (NSR) cut-off grade of US$10.25/t for oxide.”
Extracted facts
Stored fact records: 24. Some facts used in scoring do not have a stored record.
Resource Estimates (24)
indicatedgoldTonnes: 94100000Grade: 0.26Grade Unit: g/tContained Metal: 781Contained Unit: kozView all detailsHide details
Identity
- Commodity
- gold
- Ticker
- ALDE
Resource Data
- Category
- indicated
- Tonnes
- 94100000
- Grade
- 0.26
- Grade Unit
- g/t
- Contained Metal
- 781
- Contained Unit
- koz
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-02T00:00:00.000Z
Reasoning: Indicated oxide gold grade is 0.26 g/t.
Negative factors
- Low grade
Evidence · table
“0.26”
Context: 94.1
indicatedcopperTonnes: 94100000Grade: 0.2Grade Unit: %Contained Metal: 188Contained Unit: ktView all detailsHide details
Identity
- Commodity
- copper
- Ticker
- ALDE
Resource Data
- Category
- indicated
- Tonnes
- 94100000
- Grade
- 0.2
- Grade Unit
- %
- Contained Metal
- 188
- Contained Unit
- kt
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-02T00:00:00.000Z
Reasoning: Indicated oxide copper grade is 0.20%.
Evidence · table
“0.20”
Context: 94.1
indicatedsilverTonnes: 94100000Grade: 6.3Grade Unit: mozView all detailsHide details
Identity
- Commodity
- silver
- Ticker
- ALDE
Resource Data
- Category
- indicated
- Tonnes
- 94100000
- Grade
- 6.3
- Grade Unit
- moz
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-02T00:00:00.000Z
Reasoning: Indicated oxide silver grade is 2.1 g/t.
Evidence · table
“6.3”
Context: 94.1
indicatedgoldTonnes: 47300000Grade: 0.34Grade Unit: g/tContained Metal: 523Contained Unit: kozView all detailsHide details
Identity
- Commodity
- gold
- Ticker
- ALDE
Resource Data
- Category
- indicated
- Tonnes
- 47300000
- Grade
- 0.34
- Grade Unit
- g/t
- Contained Metal
- 523
- Contained Unit
- koz
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-02T00:00:00.000Z
Reasoning: Indicated transitional gold grade is 0.34 g/t.
Evidence · table
“0.34”
Context: 47.3
indicatedcopperTonnes: 47300000Grade: 0.33Grade Unit: %Contained Metal: 156Contained Unit: ktView all detailsHide details
Identity
- Commodity
- copper
- Ticker
- ALDE
Resource Data
- Category
- indicated
- Tonnes
- 47300000
- Grade
- 0.33
- Grade Unit
- %
- Contained Metal
- 156
- Contained Unit
- kt
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-02T00:00:00.000Z
Reasoning: Indicated transitional copper grade is 0.33%.
Evidence · table
“0.33”
Context: 47.3
indicatedsilverTonnes: 47300000Grade: 5.5Grade Unit: mozView all detailsHide details
Identity
- Commodity
- silver
- Ticker
- ALDE
Resource Data
- Category
- indicated
- Tonnes
- 47300000
- Grade
- 5.5
- Grade Unit
- moz
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-02T00:00:00.000Z
Reasoning: Indicated transitional silver grade is 3.6 g/t.
Evidence · table
“5.5”
Context: 47.3
indicatedgoldTonnes: 12300000Grade: 0.36Grade Unit: g/tContained Metal: 144Contained Unit: kozView all detailsHide details
Identity
- Commodity
- gold
- Ticker
- ALDE
Resource Data
- Category
- indicated
- Tonnes
- 12300000
- Grade
- 0.36
- Grade Unit
- g/t
- Contained Metal
- 144
- Contained Unit
- koz
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-02T00:00:00.000Z
Reasoning: Indicated sulphide gold grade is 0.36 g/t.
Evidence · table
“0.36”
Context: 12.3
indicatedcopperTonnes: 12300000Grade: 0.29Grade Unit: %Contained Metal: 36Contained Unit: ktView all detailsHide details
Identity
- Commodity
- copper
- Ticker
- ALDE
Resource Data
- Category
- indicated
- Tonnes
- 12300000
- Grade
- 0.29
- Grade Unit
- %
- Contained Metal
- 36
- Contained Unit
- kt
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-02T00:00:00.000Z
Reasoning: Indicated sulphide copper grade is 0.29%.
Evidence · table
“0.29”
Context: 12.3
indicatedsilverTonnes: 12300000Grade: 0.9Grade Unit: mozView all detailsHide details
Identity
- Commodity
- silver
- Ticker
- ALDE
Resource Data
- Category
- indicated
- Tonnes
- 12300000
- Grade
- 0.9
- Grade Unit
- moz
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-02T00:00:00.000Z
Reasoning: Indicated sulphide silver grade is 2.3 g/t.
Evidence · table
“0.9”
Context: 12.3
inferredgoldTonnes: 144500000Grade: 0.19Grade Unit: g/tContained Metal: 898Contained Unit: kozView all detailsHide details
Identity
- Commodity
- gold
- Ticker
- ALDE
Resource Data
- Category
- inferred
- Tonnes
- 144500000
- Grade
- 0.19
- Grade Unit
- g/t
- Contained Metal
- 898
- Contained Unit
- koz
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-02T00:00:00.000Z
Reasoning: Inferred oxide gold grade is 0.19 g/t.
Negative factors
- Low grade
- Inferred category
Evidence · table
“0.19”
Context: 144.5
inferredcopperTonnes: 144500000Grade: 0.16Grade Unit: %Contained Metal: 231Contained Unit: ktView all detailsHide details
Identity
- Commodity
- copper
- Ticker
- ALDE
Resource Data
- Category
- inferred
- Tonnes
- 144500000
- Grade
- 0.16
- Grade Unit
- %
- Contained Metal
- 231
- Contained Unit
- kt
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-02T00:00:00.000Z
Reasoning: Inferred oxide copper grade is 0.16%.
Evidence · table
“0.16”
Context: 144.5
inferredsilverTonnes: 144500000Grade: 10.3Grade Unit: mozView all detailsHide details
Identity
- Commodity
- silver
- Ticker
- ALDE
Resource Data
- Category
- inferred
- Tonnes
- 144500000
- Grade
- 10.3
- Grade Unit
- moz
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-02T00:00:00.000Z
Reasoning: Inferred oxide silver grade is 2.2 g/t.
Evidence · table
“10.3”
Context: 144.5
inferredgoldTonnes: 75600000Grade: 0.26Grade Unit: g/tContained Metal: 643Contained Unit: kozView all detailsHide details
Identity
- Commodity
- gold
- Ticker
- ALDE
Resource Data
- Category
- inferred
- Tonnes
- 75600000
- Grade
- 0.26
- Grade Unit
- g/t
- Contained Metal
- 643
- Contained Unit
- koz
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-02T00:00:00.000Z
Reasoning: Inferred transitional gold grade is 0.26 g/t.
Evidence · table
“0.26”
Context: 75.6
inferredcopperTonnes: 75600000Grade: 0.24Grade Unit: %Contained Metal: 181Contained Unit: ktView all detailsHide details
Identity
- Commodity
- copper
- Ticker
- ALDE
Resource Data
- Category
- inferred
- Tonnes
- 75600000
- Grade
- 0.24
- Grade Unit
- %
- Contained Metal
- 181
- Contained Unit
- kt
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-02T00:00:00.000Z
Reasoning: Inferred transitional copper grade is 0.24%.
Evidence · table
“0.24”
Context: 75.6
inferredsilverTonnes: 75600000Grade: 7.4Grade Unit: mozView all detailsHide details
Identity
- Commodity
- silver
- Ticker
- ALDE
Resource Data
- Category
- inferred
- Tonnes
- 75600000
- Grade
- 7.4
- Grade Unit
- moz
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-02T00:00:00.000Z
Reasoning: Inferred transitional silver grade is 3.0 g/t.
Evidence · table
“7.4”
Context: 75.6
inferredgoldTonnes: 700000Grade: 0.25Grade Unit: g/tContained Metal: 6Contained Unit: kozView all detailsHide details
Identity
- Commodity
- gold
- Ticker
- ALDE
Resource Data
- Category
- inferred
- Tonnes
- 700000
- Grade
- 0.25
- Grade Unit
- g/t
- Contained Metal
- 6
- Contained Unit
- koz
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-02T00:00:00.000Z
Reasoning: Inferred sulphide gold grade is 0.25 g/t.
Evidence · table
“0.25”
Context: 0.7
inferredcopperTonnes: 700000Grade: 0.24Grade Unit: %Contained Metal: 2Contained Unit: ktView all detailsHide details
Identity
- Commodity
- copper
- Ticker
- ALDE
Resource Data
- Category
- inferred
- Tonnes
- 700000
- Grade
- 0.24
- Grade Unit
- %
- Contained Metal
- 2
- Contained Unit
- kt
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-02T00:00:00.000Z
Reasoning: Inferred sulphide copper grade is 0.24%.
Evidence · table
“0.24”
Context: 0.7
inferredsilverTonnes: 700000Grade: 0.1Grade Unit: mozView all detailsHide details
Identity
- Commodity
- silver
- Ticker
- ALDE
Resource Data
- Category
- inferred
- Tonnes
- 700000
- Grade
- 0.1
- Grade Unit
- moz
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-02T00:00:00.000Z
Reasoning: Inferred sulphide silver grade is 4.1 g/t.
Evidence · table
“0.1”
Context: 0.7
indicatedgoldTonnes: 153700000Grade: 0.29Grade Unit: g/tContained Metal: 1448Contained Unit: kozView all detailsHide details
Identity
- Commodity
- gold
- Ticker
- ALDE
Resource Data
- Category
- indicated
- Tonnes
- 153700000
- Grade
- 0.29
- Grade Unit
- g/t
- Contained Metal
- 1448
- Contained Unit
- koz
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-02T00:00:00.000Z
Reasoning: Indicated oxide gold grade is 0.26 g/t. (Expanded from multi-commodity resource table for completeness.)
Negative factors
- Low grade
Evidence · table
“0.29”
Context: 153.7
indicatedcopperTonnes: 153700000Grade: 0.25Grade Unit: %Contained Metal: 384Contained Unit: ktView all detailsHide details
Identity
- Commodity
- copper
- Ticker
- ALDE
Resource Data
- Category
- indicated
- Tonnes
- 153700000
- Grade
- 0.25
- Grade Unit
- %
- Contained Metal
- 384
- Contained Unit
- kt
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-02T00:00:00.000Z
Reasoning: Indicated oxide gold grade is 0.26 g/t. (Expanded from multi-commodity resource table for completeness.)
Negative factors
- Low grade
Evidence · table
“0.25”
Context: 153.7
indicatedsilverTonnes: 153700000Grade: 12.7Grade Unit: mozView all detailsHide details
Identity
- Commodity
- silver
- Ticker
- ALDE
Resource Data
- Category
- indicated
- Tonnes
- 153700000
- Grade
- 12.7
- Grade Unit
- moz
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-02T00:00:00.000Z
Reasoning: Indicated oxide gold grade is 0.26 g/t. (Expanded from multi-commodity resource table for completeness.)
Negative factors
- Low grade
Evidence · table
“12.7”
Context: 153.7
inferredgoldTonnes: 220800000Grade: 0.22Grade Unit: g/tContained Metal: 1547Contained Unit: kozView all detailsHide details
Identity
- Commodity
- gold
- Ticker
- ALDE
Resource Data
- Category
- inferred
- Tonnes
- 220800000
- Grade
- 0.22
- Grade Unit
- g/t
- Contained Metal
- 1547
- Contained Unit
- koz
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-02T00:00:00.000Z
Reasoning: Inferred oxide gold grade is 0.19 g/t. (Expanded from multi-commodity resource table for completeness.)
Negative factors
- Low grade
- Inferred category
Evidence · table
“0.22”
Context: 220.8
inferredcopperTonnes: 220800000Grade: 0.19Grade Unit: %Contained Metal: 420Contained Unit: ktView all detailsHide details
Identity
- Commodity
- copper
- Ticker
- ALDE
Resource Data
- Category
- inferred
- Tonnes
- 220800000
- Grade
- 0.19
- Grade Unit
- %
- Contained Metal
- 420
- Contained Unit
- kt
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-02T00:00:00.000Z
Reasoning: Inferred oxide gold grade is 0.19 g/t. (Expanded from multi-commodity resource table for completeness.)
Negative factors
- Low grade
- Inferred category
Evidence · table
“0.19”
Context: 220.8
inferredsilverTonnes: 220800000Grade: 17.8Grade Unit: mozView all detailsHide details
Identity
- Commodity
- silver
- Ticker
- ALDE
Resource Data
- Category
- inferred
- Tonnes
- 220800000
- Grade
- 17.8
- Grade Unit
- moz
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-02T00:00:00.000Z
Reasoning: Inferred oxide gold grade is 0.19 g/t. (Expanded from multi-commodity resource table for completeness.)
Negative factors
- Low grade
- Inferred category
Evidence · table
“17.8”
Context: 220.8
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.