# Silver Breccias at San Marcial Span 1 Kilometer, Still Open at Depth Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/silver-breccias-at-san-marcial-span-1-kilometer-still-open-at-depth--1b11e087-5eea-4bd3-9b8c-d0f50063158e Original source: https://www.cruxinvestor.com/posts/silver-breccias-at-san-marcial-span-1-kilometer-still-open-at-depth Publisher: cruxinvestor Original announcement: 2026-09-11T00:00:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: GR Silver Mining - Ticker: GRSL - Exchange: Unavailable - Region: Mexico - Primary commodity: Silver - Secondary commodities: Zinc, Gold - Document categories: Drill results, Other - Extracted: 2026-09-12 00:43:39 UTC Narrative sentiment: 0.80 · Bullish ## Minestarters Atlas summary GR Silver Mining has reported successful step-out drill results at the San Marcial Area of the Plomosas Project in Mexico, extending the silver-bearing breccia system by 300m southeast and 75m deeper. The results include high-grade silver intercepts, with one interval containing a 0.7m sub-interval at 1,344 g/t Ag. Reasoning: Significant step-out drilling has extended the mineralized breccia system 300m southeast and 75m deeper, with high-grade silver intercepts including a bonanza sub-interval of 1,344 g/t Ag. - Positive factor: Step-Out Extension - Positive factor: Bonanza Intercept Facts used in scoring: 12 ## Classification and evidence No classification tags are available. ## Extracted facts Stored fact records: 12. Some facts used in scoring do not have a stored record. ## Drill Results (12) ### Fact 1 [Link to this fact](https://atlas-extractions.minestarters.com/news/silver-breccias-at-san-marcial-span-1-kilometer-still-open-at-depth--1b11e087-5eea-4bd3-9b8c-d0f50063158e#fact-drill-facts-0) San Marcial · silver Needs review: drill\_no\_hole\_id #### Identity - Project: San Marcial - Commodity: silver - Region: mexico - Reported Region: mexico - Ticker: GRSL #### Geometry - Grade: 162 - Grade Unit: g/t - Intercept: 16.1 m - From: 375.05 m - To: 391.15 m - Intercept Depth: 375.05 m #### Classification - Program: exploration - Sample Type: drill - Group ID: unknown:375.05-391.15 #### QA/QC - QA/QC Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-11T00:00:00.000Z Reasoning: High-grade silver intercept of 162 g/t over 16.1m, including a bonanza sub-interval. - Positive factor: Bonanza Intercept Evidence · text > 16.1 m at 162 grams per metric ton \(g/t\) silver starting 375.05 m downhole #### Tags used in scoring **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: qaqc\_disclosed is 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 ### Fact 2 [Link to this fact](https://atlas-extractions.minestarters.com/news/silver-breccias-at-san-marcial-span-1-kilometer-still-open-at-depth--1b11e087-5eea-4bd3-9b8c-d0f50063158e#fact-drill-facts-1) San Marcial · silver Needs review: drill\_no\_hole\_id #### Identity - Project: San Marcial - Commodity: silver - Region: mexico - Reported Region: mexico - Ticker: GRSL #### Geometry - Grade: 1344 - Grade Unit: g/t - Intercept: 0.7 m #### Classification - Program: exploration - Sample Type: drill - Group ID: unknown:375.05-391.15 #### QA/QC - QA/QC Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-11T00:00:00.000Z Reasoning: Exceptional bonanza silver grade in a sub-interval. - Positive factor: Bonanza Intercept Evidence · text > including 0.7 m at 1,344 g/t silver #### Tags used in scoring **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: qaqc\_disclosed is 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 ### Fact 3 [Link to this fact](https://atlas-extractions.minestarters.com/news/silver-breccias-at-san-marcial-span-1-kilometer-still-open-at-depth--1b11e087-5eea-4bd3-9b8c-d0f50063158e#fact-drill-facts-2) San Marcial · silver Needs review: drill\_no\_hole\_id #### Identity - Project: San Marcial - Commodity: silver - Region: mexico - Reported Region: mexico - Ticker: GRSL #### Geometry - Grade: 42.35 - Intercept: 42.35 m #### Classification - Program: exploration - Sample Type: drill - Group ID: unknown:0-42.35 #### QA/QC - QA/QC Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-11T00:00:00.000Z Reasoning: Wide lower-grade zone containing high-grade intercepts. Evidence · text > inside a wider 42.35 m zone grading 95 g/t silver #### Tags used in scoring **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: qaqc\_disclosed is 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 ### Fact 4 [Link to this fact](https://atlas-extractions.minestarters.com/news/silver-breccias-at-san-marcial-span-1-kilometer-still-open-at-depth--1b11e087-5eea-4bd3-9b8c-d0f50063158e#fact-drill-facts-3) San Marcial · silver Needs review: drill\_no\_hole\_id #### Identity - Project: San Marcial - Commodity: silver - Region: mexico - Reported Region: mexico - Ticker: GRSL #### Geometry - Grade: 95 - Grade Unit: g/t - Intercept: 42.35 m #### Classification - Program: exploration - Sample Type: drill - Group ID: unknown:0-42.35 #### QA/QC - QA/QC Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-11T00:00:00.000Z Reasoning: Wide lower-grade zone containing high-grade intercepts. Evidence · text > inside a wider 42.35 m zone grading 95 g/t silver #### Tags used in scoring **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: qaqc\_disclosed is 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 ### Fact 5 [Link to this fact](https://atlas-extractions.minestarters.com/news/silver-breccias-at-san-marcial-span-1-kilometer-still-open-at-depth--1b11e087-5eea-4bd3-9b8c-d0f50063158e#fact-drill-facts-4) San Marcial · silver Needs review: drill\_no\_hole\_id #### Identity - Project: San Marcial - Commodity: silver - Region: mexico - Reported Region: mexico - Ticker: GRSL #### Geometry - Grade: 11.7 - Grade Unit: m - Intercept: 11.7 m - From: 275.55 m - To: 287.25 m - Intercept Depth: 275.55 m #### Classification - Program: exploration - Sample Type: drill - Group ID: unknown:275.55-287.25 #### QA/QC - QA/QC Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-11T00:00:00.000Z Reasoning: Strong silver intercept reported in step-out drilling. Evidence · text > 11.7 m at 147 g/t silver starting 275.55 m downhole #### Tags used in scoring **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: qaqc\_disclosed is 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 ### Fact 6 [Link to this fact](https://atlas-extractions.minestarters.com/news/silver-breccias-at-san-marcial-span-1-kilometer-still-open-at-depth--1b11e087-5eea-4bd3-9b8c-d0f50063158e#fact-drill-facts-5) San Marcial · silver Needs review: drill\_no\_hole\_id #### Identity - Project: San Marcial - Commodity: silver - Region: mexico - Reported Region: mexico - Ticker: GRSL #### Geometry - Grade: 147 - Grade Unit: g/t - Intercept: 11.7 m - From: 275.55 m - To: 287.25 m - Intercept Depth: 275.55 m #### Classification - Program: exploration - Sample Type: drill - Group ID: unknown:275.55-287.25 #### QA/QC - QA/QC Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-11T00:00:00.000Z Reasoning: Strong silver intercept reported in step-out drilling. Evidence · text > 11.7 m at 147 g/t silver starting 275.55 m downhole #### Tags used in scoring **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: qaqc\_disclosed is 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 ### Fact 7 [Link to this fact](https://atlas-extractions.minestarters.com/news/silver-breccias-at-san-marcial-span-1-kilometer-still-open-at-depth--1b11e087-5eea-4bd3-9b8c-d0f50063158e#fact-drill-facts-6) San Marcial · silver Needs review: drill\_no\_hole\_id #### Identity - Project: San Marcial - Commodity: silver - Region: mexico - Reported Region: mexico - Ticker: GRSL #### Geometry - Grade: 29.8 - Grade Unit: m - Intercept: 29.8 m #### Classification - Program: exploration - Sample Type: drill - Group ID: unknown:0-29.8 #### QA/QC - QA/QC Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-11T00:00:00.000Z Reasoning: Wide lower-grade zone containing high-grade intercepts. Evidence · text > 29.8 m at 87 g/t silver #### Tags used in scoring **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: qaqc\_disclosed is 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 ### Fact 8 [Link to this fact](https://atlas-extractions.minestarters.com/news/silver-breccias-at-san-marcial-span-1-kilometer-still-open-at-depth--1b11e087-5eea-4bd3-9b8c-d0f50063158e#fact-drill-facts-7) San Marcial · silver Needs review: drill\_no\_hole\_id #### Identity - Project: San Marcial - Commodity: silver - Region: mexico - Reported Region: mexico - Ticker: GRSL #### Geometry - Grade: 87 - Grade Unit: g/t - Intercept: 29.8 m #### Classification - Program: exploration - Sample Type: drill - Group ID: unknown:0-29.8 #### QA/QC - QA/QC Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-11T00:00:00.000Z Reasoning: Wide lower-grade zone containing high-grade intercepts. Evidence · text > 29.8 m at 87 g/t silver #### Tags used in scoring **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: qaqc\_disclosed is 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 ### Fact 9 [Link to this fact](https://atlas-extractions.minestarters.com/news/silver-breccias-at-san-marcial-span-1-kilometer-still-open-at-depth--1b11e087-5eea-4bd3-9b8c-d0f50063158e#fact-drill-facts-8) San Marcial · silver Needs review: drill\_no\_hole\_id #### Identity - Project: San Marcial - Commodity: silver - Region: mexico - Reported Region: mexico - Ticker: GRSL #### Geometry - Grade: 36 - Grade Unit: m - Intercept: 36 m #### Classification - Program: exploration - Sample Type: drill - Group ID: unknown:0-36.0 #### QA/QC - QA/QC Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-11T00:00:00.000Z Reasoning: Broad, weak silver interval. Evidence · text > returned a broad, weak 36.0 m interval at 15 g/t silver #### Tags used in scoring **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: qaqc\_disclosed is 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 ### Fact 10 [Link to this fact](https://atlas-extractions.minestarters.com/news/silver-breccias-at-san-marcial-span-1-kilometer-still-open-at-depth--1b11e087-5eea-4bd3-9b8c-d0f50063158e#fact-drill-facts-9) San Marcial · silver Needs review: drill\_no\_hole\_id #### Identity - Project: San Marcial - Commodity: silver - Region: mexico - Reported Region: mexico - Ticker: GRSL #### Geometry - Grade: 15 - Grade Unit: g/t - Intercept: 36 m #### Classification - Program: exploration - Sample Type: drill - Group ID: unknown:0-36.0 #### QA/QC - QA/QC Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-11T00:00:00.000Z Reasoning: Broad, weak silver interval. Evidence · text > returned a broad, weak 36.0 m interval at 15 g/t silver #### Tags used in scoring **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: qaqc\_disclosed is 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 ### Fact 11 [Link to this fact](https://atlas-extractions.minestarters.com/news/silver-breccias-at-san-marcial-span-1-kilometer-still-open-at-depth--1b11e087-5eea-4bd3-9b8c-d0f50063158e#fact-drill-facts-10) Parallel Breccia target · silver Needs review: drill\_no\_hole\_id #### Identity - Project: Parallel Breccia target - Commodity: silver - Region: mexico - Reported Region: mexico - Ticker: GRSL #### Geometry - Grade: 340 - Grade Unit: g/t - Intercept: 2.85 m - From: 63 m - To: 65.85 m - Intercept Depth: 63 m #### Classification - Program: exploration - Sample Type: drill - Group ID: unknown:63.0-65.85 #### QA/QC - QA/QC Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-11T00:00:00.000Z Reasoning: High-grade silver intercept at the Parallel Breccia target. Evidence · text > returned 2.85 m at 340 g/t silver and 0.32 g/t gold from 63.00 m depth #### Tags used in scoring **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: qaqc\_disclosed is 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 ### Fact 12 [Link to this fact](https://atlas-extractions.minestarters.com/news/silver-breccias-at-san-marcial-span-1-kilometer-still-open-at-depth--1b11e087-5eea-4bd3-9b8c-d0f50063158e#fact-drill-facts-11) Parallel Breccia target · gold Needs review: drill\_no\_hole\_id #### Identity - Project: Parallel Breccia target - Commodity: gold - Region: mexico - Reported Region: mexico - Ticker: GRSL #### Geometry - Grade: 0.32 - Grade Unit: g/t - Intercept: 2.85 m - From: 63 m - To: 65.85 m - Intercept Depth: 63 m #### Classification - Program: exploration - Sample Type: drill - Group ID: unknown:63.0-65.85 #### QA/QC - QA/QC Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-11T00:00:00.000Z Reasoning: Low-grade gold intercept at the Parallel Breccia target. Evidence · text > returned 2.85 m at 340 g/t silver and 0.32 g/t gold from 63.00 m depth #### Tags used in scoring **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: qaqc\_disclosed is 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.