# Tertiary Minerals show more high grade results from Mushima North Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/tertiary-minerals-show-more-high-grade-results-from-mushima-north--1c6951a5-5417-49a9-83dd-77027f818d05 Original source: https://www.proactiveinvestors.com/companies/news/1098736/tertiary-minerals-show-more-high-grade-results-from-mushima-north-1098736.html Publisher: proactiveinvestors Original announcement: 2026-09-18T07:19:02.558Z Analysis by Minestarters Atlas Atlas analysis published: 2026-09-18T07:33:59.614Z Atlas analysis updated: 2026-09-18T07:33:59.614Z - Company: Tertiary Minerals PLC - Ticker: TYM - Exchange: Unavailable - Region: Zambia - Primary commodity: Silver - Secondary commodities: Copper, Zinc - Document categories: Drill results - Extracted: 2026-09-18 07:34:00 UTC Narrative sentiment: 0.80 · Bullish ## Minestarters Atlas summary Tertiary Minerals has delineated a 400-metre-long silver-copper-zinc zone at the Mushima North project in Zambia. Drilling confirmed high-grade intercepts, including 52m at 99 g/t silver, and demonstrated that mineralisation extends beyond current targets and remains open at depth. Reasoning: Strong high-grade silver and copper intercepts reported, including a significant 52m interval and a high-grade sub-interval, alongside evidence of extension beyond previous targets. - Positive factor: high-grade silver-copper-zinc zone delineated - Positive factor: mineralisation continuing beyond current Exploration Target - Positive factor: mineralisation remains open at depth - Positive factor: new shallow copper discovery at Western Zone Facts used in scoring: 7 ## Classification and evidence **Step-Out Extension** Polarity: positive Definition: Mineralization extended beyond the previously known limit. Why it applies: Drilling shows mineralisation continuing beyond the current Exploration Target. Evidence · text > drilling showing mineralisation continuing beyond the current Exploration Target **Nearology Play** Polarity: neutral Definition: Value premise rests on proximity to a known deposit rather than own results. Why it applies: The company is advancing its Mushima North project in Zambia. Evidence · text > at its Mushima North project in Zambia ## Extracted facts Stored fact records: 7. Some facts used in scoring do not have a stored record. ## Drill Results (7) ### Fact 1 [Link to this fact](https://atlas-staging.minestarters.com/news/tertiary-minerals-show-more-high-grade-results-from-mushima-north--1c6951a5-5417-49a9-83dd-77027f818d05#fact-drill-facts-0) Mushima North · silver Needs review: drill\_no\_hole\_id #### Identity - Project: Mushima North - Commodity: silver - Region: zambia - Reported Region: zambia - Ticker: TYM #### Geometry - Grade: 99 - Grade Unit: g/t - Intercept: 52 m - From: 39 m - To: 91 m - Intercept Depth: 39 m #### Classification - Sample Type: drill - Group ID: unknown:39-91 #### 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: 99 g/t silver over 52m is a very strong intercept for a silver-zinc-copper system. - Positive factor: strong reported intersection Evidence · text > 52 metres grading 99 grams per tonne silver, 0.41% copper and 0.43% zinc from 39 metres downhole #### 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 ### Fact 2 [Link to this fact](https://atlas-staging.minestarters.com/news/tertiary-minerals-show-more-high-grade-results-from-mushima-north--1c6951a5-5417-49a9-83dd-77027f818d05#fact-drill-facts-1) Mushima North · copper Needs review: drill\_no\_hole\_id #### Identity - Project: Mushima North - Commodity: copper - Region: zambia - Reported Region: zambia - Ticker: TYM #### Geometry - Grade: 0.41 - Grade Unit: % - Intercept: 52 m - From: 39 m - To: 91 m - Intercept Depth: 39 m #### Classification - Sample Type: drill - Group ID: unknown:39-91 #### 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: Part of a significant polymetallic intercept. Evidence · text > 52 metres grading 99 grams per tonne silver, 0.41% copper and 0.43% zinc from 39 metres downhole #### 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 ### Fact 3 [Link to this fact](https://atlas-staging.minestarters.com/news/tertiary-minerals-show-more-high-grade-results-from-mushima-north--1c6951a5-5417-49a9-83dd-77027f818d05#fact-drill-facts-2) Mushima North · zinc Needs review: drill\_no\_hole\_id #### Identity - Project: Mushima North - Commodity: zinc - Region: zambia - Reported Region: zambia - Ticker: TYM #### Geometry - Grade: 0.43 - Grade Unit: % - Intercept: 52 m - From: 39 m - To: 91 m - Intercept Depth: 39 m #### Classification - Sample Type: drill - Group ID: unknown:39-91 #### 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: Part of a significant polymetallic intercept. Evidence · text > 52 metres grading 99 grams per tonne silver, 0.41% copper and 0.43% zinc from 39 metres downhole #### 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 ### Fact 4 [Link to this fact](https://atlas-staging.minestarters.com/news/tertiary-minerals-show-more-high-grade-results-from-mushima-north--1c6951a5-5417-49a9-83dd-77027f818d05#fact-drill-facts-3) Mushima North · silver Needs review: drill\_no\_hole\_id #### Identity - Project: Mushima North - Commodity: silver - Region: zambia - Reported Region: zambia - Ticker: TYM #### Geometry - Grade: 165 - Grade Unit: g/t - Intercept: 10 m #### Classification - Sample Type: drill - Group ID: unknown:sub-interval #### 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: 165 g/t silver over 10m is a very high-grade interval. - Positive factor: high-grade sub-interval Evidence · text > 10-metre interval returned 1.01% copper, 165 g/t silver and 0.78% zinc #### 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 ### Fact 5 [Link to this fact](https://atlas-staging.minestarters.com/news/tertiary-minerals-show-more-high-grade-results-from-mushima-north--1c6951a5-5417-49a9-83dd-77027f818d05#fact-drill-facts-4) Mushima North · copper Needs review: drill\_no\_hole\_id #### Identity - Project: Mushima North - Commodity: copper - Region: zambia - Reported Region: zambia - Ticker: TYM #### Geometry - Grade: 1.01 - Grade Unit: % - Intercept: 10 m #### Classification - Sample Type: drill - Group ID: unknown:sub-interval #### 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 copper within a silver-rich interval. Evidence · text > 10-metre interval returned 1.01% copper, 165 g/t silver and 0.78% zinc #### 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 ### Fact 6 [Link to this fact](https://atlas-staging.minestarters.com/news/tertiary-minerals-show-more-high-grade-results-from-mushima-north--1c6951a5-5417-49a9-83dd-77027f818d05#fact-drill-facts-5) Mushima North · zinc Needs review: drill\_no\_hole\_id #### Identity - Project: Mushima North - Commodity: zinc - Region: zambia - Reported Region: zambia - Ticker: TYM #### Geometry - Grade: 0.78 - Grade Unit: % - Intercept: 10 m #### Classification - Sample Type: drill - Group ID: unknown:sub-interval #### 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 component of high-grade sub-interval. Evidence · text > 10-metre interval returned 1.01% copper, 165 g/t silver and 0.78% zinc #### 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 ### Fact 7 [Link to this fact](https://atlas-staging.minestarters.com/news/tertiary-minerals-show-more-high-grade-results-from-mushima-north--1c6951a5-5417-49a9-83dd-77027f818d05#fact-drill-facts-6) Western Zone · copper Needs review: drill\_no\_hole\_id #### Identity - Project: Western Zone - Commodity: copper - Region: zambia - Reported Region: zambia - Ticker: TYM #### Geometry - Grade: 0.38 - Grade Unit: % - Intercept: 25 m - From: 19 m - To: 44 m - Intercept Depth: 19 m #### Classification - Sample Type: drill - Group ID: Western\_Zone:19-44 #### 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: Discovery at Western Zone, but results are based on preliminary pXRF rather than laboratory assays. - Positive factor: new shallow copper discovery - Negative factor: preliminary pXRF results Evidence · text > preliminary pXRF results included 25 metres at 0.38% copper from 19 metres #### 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.