# Algo Grande Copper Core Testing Shows Mineralized Skarn is Denser and More Chargeable Than Host Rocks; Ground Gravity Survey to Begin at Adelita

Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/algo-grande-copper-core-testing-shows-mineralized-skarn-is-denser-and-more-charg--0c5e9d04-fbc6-406e-b57e-83f69e8e1483

Original source: https://orestocks.com/company/ALGR.V/press-releases/8548489502683797

Publisher: orestocks

Original announcement: 2026-10-07T21:30:00.000Z

Analysis by Minestarters Atlas

Atlas analysis published: 2026-10-07T21:49:27.889Z

Atlas analysis updated: 2026-10-07T21:49:27.889Z

- Company: Algo Grande Copper Corp.

- Ticker: ALGR.V

- Exchange: Unavailable

- Region: Sonora, Mexico

- Primary commodity: Copper

- Secondary commodities: Gold, Silver

- Document categories: Other, Drill results

- Extracted: 2026-10-07 21:49:28 UTC

Narrative sentiment: 0.40 · Bullish

## Minestarters Atlas summary

Algo Grande reported petrophysical testing results showing mineralized skarn at Cerro Grande is significantly denser and more chargeable than host rocks. The company is launching a large-scale ground gravity survey on October 22, 2026, to test multiple structural targets along a 7-kilometre corridor. Additionally, drill hole AG-CG-PH2-003 intersected visible copper sulfides in a new skarn target, with assays pending.

Reasoning: The release provides significant geophysical/petrophysical validation for the skarn model and announces a major upcoming survey, alongside a new drill intersection with visible mineralization, though assay results are pending.

- Positive factor: Petrophysical testing confirms skarn density and chargeability contrast

- Positive factor: New drill hole \(AG-CG-PH2-003\) intersected visible copper sulfides at a new target

- Positive factor: Planned gravity survey will de-risk structural targets along 7km corridor

- Negative factor: Assays for new skarn intersection are still pending

- Negative factor: Petrophysical results are based on a small sample set \(18 cores\)

Facts used in scoring: 1

## Classification and evidence

**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 release names a Qualified Person \(João Rocha\) and a specific laboratory \(Zonge International\) for the petrophysical testing.

Evidence · text

> reviewed and approved by João Rocha, EurGeol... a Qualified Person

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: The company is using geophysical and petrophysical data to target structural intersections along a 7km corridor related to the Cerro Grande discovery.

Evidence · text

> The combined gravity and IP data are designed to test these targets and may identify new ones.

## Extracted facts

Stored fact records: 1. Some facts used in scoring do not have a stored record.

## Drill Results (1)

### AG-CG-PH2-003

[Link to this fact](https://atlas-staging.minestarters.com/news/algo-grande-copper-core-testing-shows-mineralized-skarn-is-denser-and-more-charg--0c5e9d04-fbc6-406e-b57e-83f69e8e1483#fact-drill-facts-0)

Adelita · copper

Needs review: ungrounded

#### Identity

- Hole ID: AG-CG-PH2-003
- Project: Adelita
- Commodity: copper
- Region: mexico
- Reported Region: mexico
- Ticker: ALGR.V

#### Geometry

- Intercept: 52.1 m
- From: 602 m
- To: 654.1 m
- Intercept Depth: 602 m

#### Classification

- Sample Type: drill
- Group ID: AG-CG-PH2-003:602-654.1

#### Location

- CRS: WGS84 / UTM Zone 12N

#### QA/QC

- QP Signed: Yes
- QA/QC Methods: standards

#### Review

- Needs Review: Yes
- Review Reason: ungrounded
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-10-07T00:00:00.000Z

Reasoning: Intersection of visible copper sulfides in a new target is a positive exploration signal, but lacks assay confirmation.

- Positive factor: Visible copper sulfides \(chalcopyrite, covellite, bornite\) logged

- Negative factor: Assays are pending

- Negative factor: Visual observations are preliminary

Evidence · text

> intersected fault-hosted skarn... from 602.0 to 654.1 m downhole, including an interval from 624.45 to 634.50 m in which core logging identified visible chalcopyrite, covellite and bornite.

#### Tags used in scoring

**No QA/QC Disclosure**

Polarity: negative

Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document.

Why it applies: qaqc\_disclosed is not true

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

## 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.