What do the latest Whundo copper-zinc-silver intercepts mean for GreenTech Metals (ASX: GRE)?

Sonal Goyal

10 November 2026 06:18 PM AEDT

What do the latest Whundo copper-zinc-silver intercepts mean for GreenTech Metals (ASX: GRE)?

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Key Highlights

GreenTech Metals reported new copper-zinc-silver drilling results from the Yannery and Austin prospects at Whundo on 20 October 2026.
Hole 26GTDD014 intersected 11.61 metres grading 0.87% copper, 1.18% zinc and 2.15 grams per tonne (g/t) silver.
Hole 26GTDD017 returned seven metres grading 2.48% copper and 20.7 g/t silver from surface, outside the existing resource envelope.
GreenTech held AUD 4.527 million in cash at 30 September 2026, with additional drilling assays and resource assessments planned.

GreenTech Metals Limited (ASX:GRE) is an Australian mineral exploration company focused on copper, zinc, nickel and platinum group element projects in Western Australia. Its principal Assets include the wholly owned Whundo Copper-Zinc Project and the Munni Munni Project in the West Pilbara. GreenTech Metals Limited (ASX:GRE) shares closed at AUD 0.030 on 10 November 2026. The company's latest Whundo drilling results identified additional mineralisation beyond the existing resource boundary, supporting further geological assessment.

Whundo Drilling Identifies Mineralisation Beyond Resource Boundaries

On 20 October 2026, GreenTech Metals Limited (ASX:GRE) announced diamond drilling results from the Yannery and Austin prospects within the Whundo project.

Hole 26GTDD014 returned 11.61 metres grading 0.87% copper, 1.18% zinc and 2.15 g/t silver from 68.5 metres.

At Austin, hole 26GTDD017 intersected seven metres grading 2.48% copper and 20.7 g/t silver from surface.

Both intersections lie outside the currently defined Whundo Mineral Resource envelope.

The results indicate mineralisation in areas requiring additional drilling and geological interpretation.

However, the reported intervals represent downhole lengths, and true widths have not been established.

Further exploration is necessary to determine the continuity and potential scale of these mineralised zones.

Existing Whundo Resource and Exploration Progress

The Whundo Project hosts a reported Mineral Resource Estimate of approximately 6.2 million tonnes grading 1.12% copper and 1.04% zinc.

The estimate was last updated in April 2023 under the JORC Code 2012.

During September 2026, GreenTech Metals Limited (ASX:GRE) reported another copper-rich intersection at Whundo.

Hole 26GTDD016 returned 4.76 metres grading 7.13% copper, 1.20% zinc, 0.88 g/t gold and 29.6 g/t silver from 367 metres.

These results provide additional information about the distribution of copper and associated metals across the project.

The company is assessing whether recent drilling results can support a future Mineral Resource update incorporating gold and silver.

Any revised estimate will depend on sufficient geological information and appropriate resource modelling.

Munni Munni and Broader Exploration Activities

GreenTech completed the Acquisition of its interest in the Munni Munni Project in February 2026.

The project contains platinum group element, copper and nickel exploration targets, with GreenTech holding a 70% interest across much of the tenement package.

During 2026, the company commenced a drilling programme across Whundo and Munni Munni.

Further geological assessment, Geophysical surveys and metallurgical testing are intended to support evaluation of the mineral systems.

The company is also progressing work towards a potential Munni Munni Mineral Resource re-estimation.

Financial Position and Funding Considerations

GreenTech Metals Limited (ASX:GRE) reported cash and cash equivalents of AUD 4.527 million at 30 September 2026.

Its September quarterly Cash Flow report recorded net operating cash outflows of approximately AUD 598,000 and exploration expenditure of AUD 1.332 million.

The company estimated available funding at approximately 2.36 quarters.

For FY2026, GreenTech reported a net loss after tax of AUD 4.40 million and net assets of approximately AUD 22.14 million.

The annual financial statements identified material uncertainty relating to the company's ability to continue as a going concern.

Future exploration expenditure and resource assessment activities may require additional funding.

Exploration Risks and Upcoming Milestones

Although recent drilling has identified mineralisation outside the Whundo resource envelope, these intersections do not automatically increase the declared Mineral Resource.

Additional drilling and geological modelling are required to establish continuity, geometry and resource classification.

Funding availability is another consideration as the company progresses exploration across two project areas.

Further assay results from Whundo drilling were expected during the December 2026 quarter.

The company is also targeting resource evaluation activities at Whundo and Munni Munni, alongside further geophysical and metallurgical assessment.

Key Insights

GreenTech Metals Limited (ASX:GRE) has reported copper-zinc-silver mineralisation outside the existing Whundo Mineral Resource boundary.

The results identify areas for further exploration but do not establish an increase in the declared resource.

Additional drilling, technical evaluation and funding availability will influence the company's subsequent exploration programmes.

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