Tertiary Minerals show more high grade results from Mushima North
Original announcement by proactiveinvestors on
- 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
Analysis by Minestarters Atlas
Atlas analysis published:
Minestarters Atlas analysis
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 factors
- high-grade silver-copper-zinc zone delineated
- mineralisation continuing beyond current Exploration Target
- mineralisation remains open at depth
- new shallow copper discovery at Western Zone
Facts used in scoring: 7
Classification and evidence
Step-Out Extensionpositive
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 Playneutral
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 1Mushima North · silverGrade: 99Grade Unit: g/tIntercept: 52 mNeeds review: drill_no_hole_idView all detailsHide details
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 factors
- 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 Disclosurenegative
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 Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Fact 2Mushima North · copperGrade: 0.41Grade Unit: %Intercept: 52 mNeeds review: drill_no_hole_idView all detailsHide details
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 Disclosurenegative
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 Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Fact 3Mushima North · zincGrade: 0.43Grade Unit: %Intercept: 52 mNeeds review: drill_no_hole_idView all detailsHide details
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 Disclosurenegative
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 Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Fact 4Mushima North · silverGrade: 165Grade Unit: g/tIntercept: 10 mNeeds review: drill_no_hole_idView all detailsHide details
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 factors
- 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 Disclosurenegative
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 Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Fact 5Mushima North · copperGrade: 1.01Grade Unit: %Intercept: 10 mNeeds review: drill_no_hole_idView all detailsHide details
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 Disclosurenegative
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 Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Fact 6Mushima North · zincGrade: 0.78Grade Unit: %Intercept: 10 mNeeds review: drill_no_hole_idView all detailsHide details
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 Disclosurenegative
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 Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Fact 7Western Zone · copperGrade: 0.38Grade Unit: %Intercept: 25 mNeeds review: drill_no_hole_idView all detailsHide details
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 factors
- new shallow copper discovery
Negative factors
- 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 Disclosurenegative
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 Undisclosednegative
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.