GreenTech copper-zinc drill hits show room to grow Whundo resource

Original announcement by stockhead on

Company
GreenTech Metals
Ticker
GRE
Exchange
Unavailable
Region
West Pilbara, WA
Primary commodity
Copper
Secondary commodities
Zinc, Silver
Document categories
Drill results, Resource update
Extracted
2026-10-20 23:03:37 UTC

Analysis by Minestarters Atlas

Atlas analysis published:

Minestarters Atlas analysis

Summary

GreenTech Metals has reported new copper-zinc-silver drill intercepts at the Yannery and Austin prospects, both of which lie outside the current Whundo mineral resource. These results demonstrate potential for resource expansion and include both shallow and deeper mineralisation targets.

Reasoning: New drill intercepts at Yannery and Austin prospects extend the known mineralised footprint outside the current Whundo resource, providing significant upside for a future resource update.

Positive factors

  • Step-Out Extension
  • Mineralisation outside existing resource

Facts used in scoring: 8

Classification and evidence

Step-Out Extensionpositive

Mineralization extended beyond the previously known limit.

Why it applies: Drill hits at Yannery and Austin are outside the current mineralised envelopes/resource.

Evidence · text

“returned copper-zinc-silver mineralisation outside Whundo’s existing resource”

Extracted facts

Stored fact records: 8. Some facts used in scoring do not have a stored record.

Drill Results (8)

Fact 1Whundo East · copperGrade: 0.9Grade Unit: %Intercept: 11.6 mNeeds review: drill_no_hole_idView all details
Link to this fact

Identity

Project
Whundo East
Commodity
copper
Region
west pilbara, wa
Reported Region
west pilbara, wa
Ticker
GRE

Geometry

Grade
0.9
Grade Unit
%
Intercept
11.6 m
From
68.5 m
To
80.1 m
Intercept Depth
68.5 m

Classification

Deposit Type
vms
Program
exploration
Sample Type
drill
Group ID
Yannery:68.5-80.1
Mining Method
unknown

Location

Location
Yannery
Loc. Source
document

QA/QC

QA/QC Disclosed
Yes
QA/QC Methods
standards, blanks

Review

Needs Review
Yes
Review Reason
drill_no_hole_id
Interp. Status
scored
Historical
No

Dates

Event date
2026-10-20T00:00:00.000Z

Reasoning: High-grade copper intercept outside the current resource at Yannery.

Positive factors

  • Step-Out Extension

Evidence · text

“Yannery prospect returned 11.6m at 0.9% copper, 1.2% zinc and 2.2g/t silver from 68.5m”

Tags used in scoring

QA/QC Disclosedpositive

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 Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

Fact 2Whundo East · zincGrade: 1.2Grade Unit: %Intercept: 11.6 mNeeds review: drill_no_hole_idView all details
Link to this fact

Identity

Project
Whundo East
Commodity
zinc
Region
west pilbara, wa
Reported Region
west pilbara, wa
Ticker
GRE

Geometry

Grade
1.2
Grade Unit
%
Intercept
11.6 m
From
68.5 m
To
80.1 m
Intercept Depth
68.5 m

Classification

Deposit Type
vms
Program
exploration
Sample Type
drill
Group ID
Yannery:68.5-80.1
Mining Method
unknown

Location

Location
Yannery
Loc. Source
document

QA/QC

QA/QC Disclosed
Yes
QA/QC Methods
standards, blanks

Review

Needs Review
Yes
Review Reason
drill_no_hole_id
Interp. Status
scored
Historical
No

Dates

Event date
2026-10-20T00:00:00.000Z

Reasoning: Zinc component of the Yannery intercept outside the current resource.

Positive factors

  • Step-Out Extension

Evidence · text

“11.6m at 0.9% copper, 1.2% zinc and 2.2g/t silver from 68.5m”

Tags used in scoring

QA/QC Disclosedpositive

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 Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

Fact 3Whundo East · silverGrade: 2.2Grade Unit: g/tIntercept: 11.6 mNeeds review: drill_no_hole_idView all details
Link to this fact

Identity

Project
Whundo East
Commodity
silver
Region
west pilbara, wa
Reported Region
west pilbara, wa
Ticker
GRE

Geometry

Grade
2.2
Grade Unit
g/t
Intercept
11.6 m
From
68.5 m
To
80.1 m
Intercept Depth
68.5 m

Classification

Deposit Type
vms
Program
exploration
Sample Type
drill
Group ID
Yannery:68.5-80.1
Mining Method
unknown

Location

Location
Yannery
Loc. Source
document

QA/QC

QA/QC Disclosed
Yes
QA/QC Methods
standards, blanks

Review

Needs Review
Yes
Review Reason
drill_no_hole_id
Interp. Status
scored
Historical
No

Dates

Event date
2026-10-20T00:00:00.000Z

Reasoning: Silver component of the Yannery intercept outside the current resource.

Positive factors

  • Step-Out Extension

Evidence · text

“11.6m at 0.9% copper, 1.2% zinc and 2.2g/t silver from 68.5m”

Tags used in scoring

QA/QC Disclosedpositive

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 Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

Fact 4Whundo East · copperGrade: 2.5Grade Unit: %Intercept: 7 mNeeds review: drill_no_hole_idView all details
Link to this fact

Identity

Project
Whundo East
Commodity
copper
Region
west pilbara, wa
Reported Region
west pilbara, wa
Ticker
GRE

Geometry

Grade
2.5
Grade Unit
%
Intercept
7 m
From
0 m
To
7 m
Intercept Depth
0 m

Classification

Deposit Type
vms
Program
exploration
Sample Type
drill
Group ID
Austin:0.0-7.0
Mining Method
unknown

Location

Location
Austin
Loc. Source
document

QA/QC

QA/QC Disclosed
Yes
QA/QC Methods
standards, blanks

Review

Needs Review
Yes
Review Reason
drill_no_hole_id
Interp. Status
scored
Historical
No

Dates

Event date
2026-10-20T00:00:00.000Z

Reasoning: Strong shallow copper intercept at Austin between existing deposits.

Positive factors

  • Step-Out Extension

Evidence · text

“intersected 7m at 2.5% copper and 20.7g/t silver from surface”

Tags used in scoring

QA/QC Disclosedpositive

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 Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

Fact 5Whundo East · silverGrade: 20.7Grade Unit: g/tIntercept: 7 mNeeds review: drill_no_hole_idView all details
Link to this fact

Identity

Project
Whundo East
Commodity
silver
Region
west pilbara, wa
Reported Region
west pilbara, wa
Ticker
GRE

Geometry

Grade
20.7
Grade Unit
g/t
Intercept
7 m
From
0 m
To
7 m
Intercept Depth
0 m

Classification

Deposit Type
vms
Program
exploration
Sample Type
drill
Group ID
Austin:0.0-7.0
Mining Method
unknown

Location

Location
Austin
Loc. Source
document

QA/QC

QA/QC Disclosed
Yes
QA/QC Methods
standards, blanks

Review

Needs Review
Yes
Review Reason
drill_no_hole_id
Interp. Status
scored
Historical
No

Dates

Event date
2026-10-20T00:00:00.000Z

Reasoning: Silver component of the shallow Austin intercept.

Positive factors

  • Step-Out Extension

Evidence · text

“intersected 7m at 2.5% copper and 20.7g/t silver from surface”

Tags used in scoring

QA/QC Disclosedpositive

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 Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

Fact 6Whundo East · copperGrade: 2.6Grade Unit: %Intercept: 1.5 mNeeds review: drill_no_hole_idView all details
Link to this fact

Identity

Project
Whundo East
Commodity
copper
Region
west pilbara, wa
Reported Region
west pilbara, wa
Ticker
GRE

Geometry

Grade
2.6
Grade Unit
%
Intercept
1.5 m
From
257.6 m
To
259.1 m
Intercept Depth
257.6 m

Classification

Deposit Type
vms
Program
exploration
Sample Type
drill
Group ID
Austin:257.6-259.1
Mining Method
unknown

Location

Location
Austin
Loc. Source
document

QA/QC

QA/QC Disclosed
Yes
QA/QC Methods
standards, blanks

Review

Needs Review
Yes
Review Reason
drill_no_hole_id
Interp. Status
scored
Historical
No

Dates

Event date
2026-10-20T00:00:00.000Z

Reasoning: Deeper copper intercept at Austin.

Evidence · text

“returned 1.5m at 2.6% copper, 0.7% zinc and 7g/t silver from 257.6m”

Tags used in scoring

QA/QC Disclosedpositive

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 Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

Fact 7Whundo East · zincGrade: 0.7Grade Unit: %Intercept: 1.5 mNeeds review: drill_no_hole_idView all details
Link to this fact

Identity

Project
Whundo East
Commodity
zinc
Region
west pilbara, wa
Reported Region
west pilbara, wa
Ticker
GRE

Geometry

Grade
0.7
Grade Unit
%
Intercept
1.5 m
From
257.6 m
To
259.1 m
Intercept Depth
257.6 m

Classification

Deposit Type
vms
Program
exploration
Sample Type
drill
Group ID
Austin:257.6-259.1
Mining Method
unknown

Location

Location
Austin
Loc. Source
document

QA/QC

QA/QC Disclosed
Yes
QA/QC Methods
standards, blanks

Review

Needs Review
Yes
Review Reason
drill_no_hole_id
Interp. Status
scored
Historical
No

Dates

Event date
2026-10-20T00:00:00.000Z

Reasoning: Zinc component of the deeper Austin intercept.

Evidence · text

“returned 1.5m at 2.6% copper, 0.7% zinc and 7g/t silver from 257.6m”

Tags used in scoring

QA/QC Disclosedpositive

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 Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

Fact 8Whundo East · silverGrade: 7Grade Unit: g/tIntercept: 1.5 mNeeds review: drill_no_hole_idView all details
Link to this fact

Identity

Project
Whundo East
Commodity
silver
Region
west pilbara, wa
Reported Region
west pilbara, wa
Ticker
GRE

Geometry

Grade
7
Grade Unit
g/t
Intercept
1.5 m
From
257.6 m
To
259.1 m
Intercept Depth
257.6 m

Classification

Deposit Type
vms
Program
exploration
Sample Type
drill
Group ID
Austin:257.6-259.1
Mining Method
unknown

Location

Location
Austin
Loc. Source
document

QA/QC

QA/QC Disclosed
Yes
QA/QC Methods
standards, blanks

Review

Needs Review
Yes
Review Reason
drill_no_hole_id
Interp. Status
scored
Historical
No

Dates

Event date
2026-10-20T00:00:00.000Z

Reasoning: Silver component of the deeper Austin intercept.

Evidence · text

“returned 1.5m at 2.6% copper, 0.7% zinc and 7g/t silver from 257.6m”

Tags used in scoring

QA/QC Disclosedpositive

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 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.