# Zacatecas Silver Announces Completion of Phase Two Sampling at Oso Negro, Sonora

Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/zacatecas-silver-announces-completion-of-phase-two-sampling-at-oso-negro-sonora--7c3d66b1-f5b9-453c-91bd-2714e3b54a8e

Original source: https://money.tmx.com/en/quote/ZAC/news/5454723990556756/zacatecas-silver-announces-completion-of-phase-two-sampling-at-oso-negro-sonora

Publisher: tmx

Original announcement: 2026-07-09T10:30:00.000Z

Analysis by Minestarters Atlas

Atlas analysis published: Unknown date

Atlas analysis updated: Unknown date

- Company: Zacatecas Silver Corp.

- Ticker: ZAC

- Exchange: TSX

- Region: Sonora, Mexico

- Primary commodity: Silver

- Secondary commodities: Gold

- Document categories: Drill results, Other

- Extracted: 2026-09-17 06:29:24 UTC

Narrative sentiment: 0.30 · Bullish

## Minestarters Atlas summary

Zacatecas Silver has completed phase two rock chip sampling and vein mapping at the Oso Negro project in Sonora, Mexico. The program identified vein extensions in the Prospecto and Tere systems and prepared the project for upcoming angled diamond drilling.

Reasoning: The announcement reports the completion of a sampling phase rather than new assay results, serving primarily as a progress update to support upcoming drilling.

- Positive factor: Confirmation of extensive sulphidic quartz veins

- Positive factor: Identification of additional vein extensions \(Prospecto and Tere systems\)

- Positive factor: Preparation for upcoming drilling program

Facts used in scoring: 1

## Classification and evidence

**Nearology Play**

Polarity: neutral

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

Why it applies: Project is located 25 km from MAG Silver's Juanicipio Mine and Fresnillo PLC's Fresnillo Mine.

Evidence · text

> The property is 25 km southeast of MAG Silver's Juanicipio Mine and Fresnillo PLC's Fresnillo Mine

**Infill Drilling**

Polarity: neutral

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

Why it applies: Phase two focused on fine-tuning drill targets and mapping vein extensions.

Evidence · text

> The focus of this exploration phase was to fine tune the position of planned angled diamond drill targets.

## Extracted facts

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

## Drill Results (1)

### Fact 1

[Link to this fact](https://atlas-extractions.minestarters.com/news/zacatecas-silver-announces-completion-of-phase-two-sampling-at-oso-negro-sonora--7c3d66b1-f5b9-453c-91bd-2714e3b54a8e#fact-drill-facts-0)

Historical result

Needs review: historical\_restatement

#### Identity

- Region: mexico
- Reported Region: mexico
- Ticker: ZAC

#### Classification

- Sample Type: surface

#### Location

- Location: Prospecto vein system
- Loc. Source: document

#### QA/QC

- QP Signed: Yes

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes
- Historical Source Date: 2026-06-09T00:00:00.000Z

#### Dates

- Event date: 2026-07-09T00:00:00.000Z

Reasoning: Historical reference to phase one results; no new assays provided in this release.

Evidence · text

> Phase one rock chip sampling program at Oso Negro which returned up to 14.8 g/t Au and 2,340 g/t Ag

#### 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

**Stale Data Re-release**

Polarity: negative

Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty.

Why it applies: the fact restates a prior release

## 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.