# GR Silver's 2027 Resource Update Decides What Its Zinc Is Worth Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/gr-silver-s-2027-resource-update-decides-what-its-zinc-is-worth--c7b20503-a9c9-43cd-a58a-71565efa99bf Original source: https://www.cruxinvestor.com/posts/gr-silvers-2027-resource-update-decides-what-its-zinc-is-worth Publisher: cruxinvestor Original announcement: 2026-09-18T00:00:00.000Z Analysis by Minestarters Atlas Atlas analysis published: 2026-09-18T23:47:50.998Z Atlas analysis updated: 2026-09-18T23:47:50.998Z - Company: GR Silver Mining Ltd. - Ticker: GRSL - Exchange: Unavailable - Region: Mexico - Primary commodity: Silver - Secondary commodities: Zinc, Lead, Gold, Copper - Document categories: Drill results, Resource update - Extracted: 2026-09-18 23:47:51 UTC Narrative sentiment: 0.60 · Bullish ## Minestarters Atlas summary GR Silver reported step-out drill results from the San Marcial area of the Plomosas Project, extending the mineralized breccia 300m southeast and 75m deeper than the 2023 resource boundary. The drilling confirms high-grade silver accompanied by lead and zinc, supporting the company's upcoming 2027 resource update. Reasoning: Significant step-out drill results extending the known mineralized footprint and demonstrating polymetallic continuity. - Positive factor: Step-out drilling extends mineralization 300m southeast and 75m deeper than 2023 resource - Positive factor: High-grade silver intercepts accompanied by base metal \(Zn, Pb\) grades - Positive factor: System remains open at depth - Positive factor: Discovery scale expanding to ~1km strike - Negative factor: 7 of 21 holes in the 2026 program are still awaiting assays Facts used in scoring: 11 ## Classification and evidence **Step-Out Extension** Polarity: positive Definition: Mineralization extended beyond the previously known limit. Why it applies: Drill results push mineralized breccias 300m southeast and 75m deeper than the 2023 resource boundary. Evidence · text > They push the mineralized breccias at least 300 m southeast and 75 m deeper than the edge of the company's 2023 resource **Bonanza Intercept** Polarity: positive Definition: Exceptionally high-grade zone, well above the deposit-type norm. Why it applies: 1,344 g/t silver is exceptionally high grade. Evidence · text > 1,344 grams per metric ton \(g/t\) of silver **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: The document does not disclose specific QA/QC protocols, lab certification, or QP sign-off for the 2026 results. Evidence · text > The two best intervals were 16.1 meters \(m\) true width at 162 grams per metric ton \(g/t\) silver ## Extracted facts Stored fact records: 11. Some facts used in scoring do not have a stored record. ## Drill Results (11) ### Fact 1 [Link to this fact](https://atlas-staging.minestarters.com/news/gr-silver-s-2027-resource-update-decides-what-its-zinc-is-worth--c7b20503-a9c9-43cd-a58a-71565efa99bf#fact-drill-facts-0) Plomosas · silver Needs review: drill\_no\_hole\_id #### Identity - Project: Plomosas - Commodity: silver - Region: mexico - Reported Region: mexico - Ticker: GRSL #### Geometry - Grade: 162 - Grade Unit: g/t - Intercept: 16.1 m - True Width: 16.1 m - From: 375.05 m - To: 391.15 m - Intercept Depth: 375.05 m #### Classification - Deposit Type: epithermal - Program: exploration - Sample Type: drill - Group ID: unknown:375.05-unknown - Mining Method: unknown #### Location - Location: San Marcial - Loc. Source: document #### QA/QC - QA/QC Disclosed: Yes - QA/QC Methods: standards, duplicates #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-18T00:00:00.000Z Reasoning: Strong high-grade silver intercept in a step-out location. - Positive factor: High grade silver intercept #### Tags used in scoring **True Width Disclosed** Polarity: positive Definition: Actual thickness perpendicular to structure is stated, not just downhole length. Why it applies: true\_width\_m is 16.1 **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-staging.minestarters.com/news/gr-silver-s-2027-resource-update-decides-what-its-zinc-is-worth--c7b20503-a9c9-43cd-a58a-71565efa99bf#fact-drill-facts-1) Plomosas · silver Needs review: drill\_no\_hole\_id #### Identity - Project: Plomosas - Commodity: silver - Region: mexico - Reported Region: mexico - Ticker: GRSL #### Geometry - Grade: 147 - Grade Unit: g/t - Intercept: 11.7 m - True Width: 11.7 m - From: 275.55 m - To: 287.25 m - Intercept Depth: 275.55 m #### Classification - Deposit Type: epithermal - Program: exploration - Sample Type: drill - Group ID: unknown:275.55-unknown - Mining Method: unknown #### Location - Location: San Marcial - Loc. Source: document #### QA/QC - QA/QC Disclosed: Yes - QA/QC Methods: standards, duplicates #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-18T00:00:00.000Z Reasoning: Strong high-grade silver intercept in a step-out location. - Positive factor: High grade silver intercept #### Tags used in scoring **True Width Disclosed** Polarity: positive Definition: Actual thickness perpendicular to structure is stated, not just downhole length. Why it applies: true\_width\_m is 11.7 **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-staging.minestarters.com/news/gr-silver-s-2027-resource-update-decides-what-its-zinc-is-worth--c7b20503-a9c9-43cd-a58a-71565efa99bf#fact-drill-facts-2) Plomosas · silver Needs review: drill\_no\_hole\_id #### Identity - Project: Plomosas - Commodity: silver - Region: mexico - Reported Region: mexico - Ticker: GRSL #### Geometry - Grade: 95 - Grade Unit: g/t - Intercept: 42.35 m - True Width: 42.35 m #### Classification - Deposit Type: epithermal - Program: exploration - Sample Type: drill - Group ID: unknown:unknown-unknown - Mining Method: unknown #### Location - Location: San Marcial - Loc. Source: document #### QA/QC - QA/QC Disclosed: Yes - QA/QC Methods: standards, duplicates #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-18T00:00:00.000Z Reasoning: Wide intercept with moderate silver grade. - Positive factor: Significant width #### Tags used in scoring **True Width Disclosed** Polarity: positive Definition: Actual thickness perpendicular to structure is stated, not just downhole length. Why it applies: true\_width\_m is 42.35 **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-staging.minestarters.com/news/gr-silver-s-2027-resource-update-decides-what-its-zinc-is-worth--c7b20503-a9c9-43cd-a58a-71565efa99bf#fact-drill-facts-3) Plomosas · zinc Needs review: drill\_no\_hole\_id #### Identity - Project: Plomosas - Commodity: zinc - Region: mexico - Reported Region: mexico - Ticker: GRSL #### Geometry - Grade: 0.5 - Grade Unit: % - Intercept: 42.35 m - True Width: 42.35 m #### Classification - Deposit Type: epithermal - Program: exploration - Sample Type: drill - Group ID: unknown:unknown-unknown - Mining Method: unknown #### Location - Location: San Marcial - Loc. Source: document #### QA/QC - QA/QC Disclosed: Yes - QA/QC Methods: standards, duplicates #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-18T00:00:00.000Z Reasoning: Zinc grade accompanying silver in wide intercept. #### Tags used in scoring **True Width Disclosed** Polarity: positive Definition: Actual thickness perpendicular to structure is stated, not just downhole length. Why it applies: true\_width\_m is 42.35 **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-staging.minestarters.com/news/gr-silver-s-2027-resource-update-decides-what-its-zinc-is-worth--c7b20503-a9c9-43cd-a58a-71565efa99bf#fact-drill-facts-4) Plomosas · lead Needs review: drill\_no\_hole\_id #### Identity - Project: Plomosas - Commodity: lead - Region: mexico - Reported Region: mexico - Ticker: GRSL #### Geometry - Grade: 0.2 - Grade Unit: % - Intercept: 42.35 m - True Width: 42.35 m #### Classification - Deposit Type: epithermal - Program: exploration - Sample Type: drill - Group ID: unknown:unknown-unknown - Mining Method: unknown #### Location - Location: San Marcial - Loc. Source: document #### QA/QC - QA/QC Disclosed: Yes - QA/QC Methods: standards, duplicates #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-18T00:00:00.000Z Reasoning: Lead grade accompanying silver in wide intercept. #### Tags used in scoring **True Width Disclosed** Polarity: positive Definition: Actual thickness perpendicular to structure is stated, not just downhole length. Why it applies: true\_width\_m is 42.35 **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-staging.minestarters.com/news/gr-silver-s-2027-resource-update-decides-what-its-zinc-is-worth--c7b20503-a9c9-43cd-a58a-71565efa99bf#fact-drill-facts-5) Plomosas · silver Needs review: drill\_no\_hole\_id #### Identity - Project: Plomosas - Commodity: silver - Region: mexico - Reported Region: mexico - Ticker: GRSL #### Geometry - Grade: 159 - Grade Unit: g/t - Intercept: 4.15 m - True Width: 4.15 m - From: 191.5 m - To: 195.65 m - Intercept Depth: 191.5 m #### Classification - Deposit Type: epithermal - Program: exploration - Sample Type: drill - Group ID: unknown:191.5-unknown - Mining Method: unknown #### Location - Location: San Marcial - Loc. Source: document #### QA/QC - QA/QC Disclosed: Yes - QA/QC Methods: standards, duplicates #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-18T00:00:00.000Z Reasoning: High grade silver intercept. - Positive factor: High grade silver #### Tags used in scoring **True Width Disclosed** Polarity: positive Definition: Actual thickness perpendicular to structure is stated, not just downhole length. Why it applies: true\_width\_m is 4.15 **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-staging.minestarters.com/news/gr-silver-s-2027-resource-update-decides-what-its-zinc-is-worth--c7b20503-a9c9-43cd-a58a-71565efa99bf#fact-drill-facts-6) Plomosas · zinc Needs review: drill\_no\_hole\_id #### Identity - Project: Plomosas - Commodity: zinc - Region: mexico - Reported Region: mexico - Ticker: GRSL #### Geometry - Grade: 5.8 - Grade Unit: % - Intercept: 4.15 m - True Width: 4.15 m - From: 191.5 m - To: 195.65 m - Intercept Depth: 191.5 m #### Classification - Deposit Type: epithermal - Program: exploration - Sample Type: drill - Group ID: unknown:191.5-unknown - Mining Method: unknown #### Location - Location: San Marcial - Loc. Source: document #### QA/QC - QA/QC Disclosed: Yes - QA/QC Methods: standards, duplicates #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-18T00:00:00.000Z Reasoning: Richest zinc grade of the 2026 program. - Positive factor: Exceptional zinc grade #### Tags used in scoring **True Width Disclosed** Polarity: positive Definition: Actual thickness perpendicular to structure is stated, not just downhole length. Why it applies: true\_width\_m is 4.15 **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-staging.minestarters.com/news/gr-silver-s-2027-resource-update-decides-what-its-zinc-is-worth--c7b20503-a9c9-43cd-a58a-71565efa99bf#fact-drill-facts-7) Plomosas · lead Needs review: drill\_no\_hole\_id #### Identity - Project: Plomosas - Commodity: lead - Region: mexico - Reported Region: mexico - Ticker: GRSL #### Geometry - Grade: 2 - Grade Unit: % - Intercept: 4.15 m - True Width: 4.15 m - From: 191.5 m - To: 195.65 m - Intercept Depth: 191.5 m #### Classification - Deposit Type: epithermal - Program: exploration - Sample Type: drill - Group ID: unknown:191.5-unknown - Mining Method: unknown #### Location - Location: San Marcial - Loc. Source: document #### QA/QC - QA/QC Disclosed: Yes - QA/QC Methods: standards, duplicates #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-18T00:00:00.000Z Reasoning: Strong lead grade accompanying high-grade zinc/silver. - Positive factor: Strong lead grade #### Tags used in scoring **True Width Disclosed** Polarity: positive Definition: Actual thickness perpendicular to structure is stated, not just downhole length. Why it applies: true\_width\_m is 4.15 **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-staging.minestarters.com/news/gr-silver-s-2027-resource-update-decides-what-its-zinc-is-worth--c7b20503-a9c9-43cd-a58a-71565efa99bf#fact-drill-facts-8) Plomosas · silver Needs review: drill\_no\_hole\_id #### Identity - Project: Plomosas - Commodity: silver - Region: mexico - Reported Region: mexico - Ticker: GRSL #### Geometry - Grade: 1344 - Grade Unit: g/t - Intercept: 0.7 m - True Width: 0.7 m #### Classification - Deposit Type: epithermal - Program: exploration - Sample Type: drill - Group ID: unknown:unknown-unknown - Mining Method: unknown #### Location - Location: San Marcial - Loc. Source: document #### QA/QC - QA/QC Disclosed: Yes - QA/QC Methods: standards, duplicates #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-18T00:00:00.000Z Reasoning: Extremely high grade silver intercept. - Positive factor: Bonanza silver grade #### Tags used in scoring **True Width Disclosed** Polarity: positive Definition: Actual thickness perpendicular to structure is stated, not just downhole length. Why it applies: true\_width\_m is 0.7 **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-staging.minestarters.com/news/gr-silver-s-2027-resource-update-decides-what-its-zinc-is-worth--c7b20503-a9c9-43cd-a58a-71565efa99bf#fact-drill-facts-9) Plomosas · zinc Needs review: drill\_no\_hole\_id #### Identity - Project: Plomosas - Commodity: zinc - Region: mexico - Reported Region: mexico - Ticker: GRSL #### Geometry - Grade: 1.9 - Grade Unit: % - Intercept: 0.7 m - True Width: 0.7 m #### Classification - Deposit Type: epithermal - Program: exploration - Sample Type: drill - Group ID: unknown:unknown-unknown - Mining Method: unknown #### Location - Location: San Marcial - Loc. Source: document #### QA/QC - QA/QC Disclosed: Yes - QA/QC Methods: standards, duplicates #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-18T00:00:00.000Z Reasoning: Zinc grade increases with silver grade in narrow intervals. - Positive factor: High zinc grade in high-grade silver zone #### Tags used in scoring **True Width Disclosed** Polarity: positive Definition: Actual thickness perpendicular to structure is stated, not just downhole length. Why it applies: true\_width\_m is 0.7 **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-staging.minestarters.com/news/gr-silver-s-2027-resource-update-decides-what-its-zinc-is-worth--c7b20503-a9c9-43cd-a58a-71565efa99bf#fact-drill-facts-10) Plomosas · lead Needs review: drill\_no\_hole\_id #### Identity - Project: Plomosas - Commodity: lead - Region: mexico - Reported Region: mexico - Ticker: GRSL #### Geometry - Grade: 0.4 - Grade Unit: % - Intercept: 0.7 m - True Width: 0.7 m #### Classification - Deposit Type: epithermal - Program: exploration - Sample Type: drill - Group ID: unknown:unknown-unknown - Mining Method: unknown #### Location - Location: San Marcial - Loc. Source: document #### QA/QC - QA/QC Disclosed: Yes - QA/QC Methods: standards, duplicates #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-18T00:00:00.000Z Reasoning: Lead grade increases with silver grade in narrow intervals. #### Tags used in scoring **True Width Disclosed** Polarity: positive Definition: Actual thickness perpendicular to structure is stated, not just downhole length. Why it applies: true\_width\_m is 0.7 **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.