Tertiary Minerals is advancing encouraging Zambia project, with new value catalysts ahead

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
2026-08-24 03:58:41 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, extending the mineralised footprint beyond the previously defined Exploration Target.

Reasoning: The discovery of a new shallow copper-mineralised zone (Western Zone) extending beyond the previous exploration target is a significant exploration success, though results are currently based on preliminary pXRF data.

Positive factors

  • discovery of new mineralised zone
  • extension beyond previous exploration target boundary

Negative factors

  • results are preliminary pXRF 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

Atlas analysis — Tertiary Minerals PLC: Tertiary Minerals is advancing encouraging Zambia project, with new value catalysts ahead. 0.38 % over 25 m

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 for the new intercepts are currently unknown.

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 details
Link to this fact

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
To
44 m

Classification

Program
exploration
Sample Type
drill
Group ID
26TMNRC-076:19-44
Mining Method
open_pit

QA/QC

QA/QC Disclosed
No

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 identifies a new zone, but lacks certified assay validation.

Positive factors

  • new zone discovery

Negative factors

  • preliminary pXRF results
  • no certified assays
  • 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 details
Link to this fact

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
To
42 m

Classification

Program
exploration
Sample Type
drill
Group ID
26TMNRC-076:29-42
Mining Method
open_pit

QA/QC

QA/QC Disclosed
No

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 scout hole 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 details
Link to this fact

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
To
36 m

Classification

Program
exploration
Sample Type
drill
Group ID
26TMNRC-076:33-36
Mining Method
open_pit

QA/QC

QA/QC Disclosed
No

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-08-18T00:00:00.000Z

Reasoning: High grade narrow sub-interval.

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.