Tertiary Minerals Discovers New Shallow Copper Mineralised Zone In Zambia
Original announcement by proactiveinvestors on
- Company
- Tertiary Minerals PLC
- Ticker
- TYM
- Exchange
- Unavailable
- Region
- Zambia
- Primary commodity
- Copper
- Secondary commodities
- Silver
- Document categories
- Drill results, Other
- Extracted
- 2026-08-19 20:16:43 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Tertiary Minerals has discovered a new shallow copper-mineralised zone, named the Western Zone, at its Mushima North project in Zambia. Preliminary pXRF results from hole 26TMNRC-076 show copper intercepts of up to 0.75%, extending the mineralised footprint beyond the previously defined Exploration Target.
Reasoning: The discovery of a new mineralised zone (Western Zone) extending beyond the previous target is a positive exploration signal, though the data is currently limited to preliminary pXRF analysis without certified assays or true width disclosures.
Positive factors
- discovery of new zone
- extension beyond previous exploration target boundary
Negative factors
- preliminary pXRF results only
- certified laboratory assays still required
- true widths currently unknown
Low confidence — this extraction should be reviewed alongside the original source.
Facts used in scoring: 3

Classification and evidence
Apparent Width Onlynegative
Interval given as downhole width with no true width or drill orientation — apparent width may overstate true thickness.
Why it applies: The document explicitly states that true widths are currently unknown for the reported intercepts.
Evidence · text
“true widths currently unknown”
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: The results are based on preliminary pXRF analysis and the document notes that certified laboratory assays are still required.
Evidence · text
“The results are preliminary, with certified laboratory assays still required”
Step-Out Extensionpositive
Mineralization extended beyond the previously known limit.
Why it applies: The new Western Zone sits beyond the boundary of the previously defined Discovery Zone.
Evidence · text
“The newly named Western Zone sits beyond the boundary of the Discovery Zone”
Extracted facts
Stored fact records: 3. Some facts used in scoring do not have a stored record.
Drill Results (3)
26TMNRC-076Mushima North · copperGrade: 0.38Grade Unit: %Intercept: 25 mView all detailsHide details
Identity
- Hole ID
- 26TMNRC-076
- Project
- Mushima North
- Commodity
- copper
- Region
- zambia
- Reported Region
- Zambia
- Ticker
- TYM
Geometry
- Grade
- 0.38
- Grade Unit
- %
- Intercept
- 25 m
- From
- 19 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- 26TMNRC-076:19-44
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-08-18T00:00:00.000Z
Reasoning: Preliminary pXRF intercept of 25m at 0.38% Cu.
Positive factors
- new zone discovery
Negative factors
- preliminary pXRF results
- true width unknown
Evidence · text
“Preliminary pXRF analysis from scout hole 26TMNRC-076 returned 25 metres at 0.38% copper from 19 metres downhole”
26TMNRC-076Mushima North · copperGrade: 0.53Grade Unit: %Intercept: 13 mView all detailsHide details
Identity
- Hole ID
- 26TMNRC-076
- Project
- Mushima North
- Commodity
- copper
- Region
- zambia
- Reported Region
- Zambia
- Ticker
- TYM
Geometry
- Grade
- 0.53
- Grade Unit
- %
- Intercept
- 13 m
- From
- 29 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- 26TMNRC-076:29-42
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-08-18T00:00:00.000Z
Reasoning: Higher grade sub-interval within the main intercept.
Positive factors
- higher grade sub-interval
Negative factors
- preliminary pXRF results
Evidence · text
“including 13 metres at 0.53% from 29 metres”
26TMNRC-076Mushima North · copperGrade: 0.75Grade Unit: %Intercept: 3 mView all detailsHide details
Identity
- Hole ID
- 26TMNRC-076
- Project
- Mushima North
- Commodity
- copper
- Region
- zambia
- Reported Region
- Zambia
- Ticker
- TYM
Geometry
- Grade
- 0.75
- Grade Unit
- %
- Intercept
- 3 m
- From
- 33 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- 26TMNRC-076:33-36
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-08-18T00:00:00.000Z
Reasoning: High grade sub-interval within the main intercept.
Positive factors
- high grade sub-interval
Negative factors
- preliminary pXRF results
Evidence · text
“and three metres at 0.75% from 33 metres”
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.