GreenTech Metals Unveils High-Grade Munni Munni Drilling and New Copper Targets with $7.5M Boost

• Phase 1 drilling validates historic resource with high-grade PGE-Cu-Ni intercepts
• Independent geochemical review identifies large copper anomaly and basal contact targets
• Government co-funded Fixed Loop EM survey underway to test deep sulphide accumulations
• Upcoming 8,300m drill program to focus on copper potential and resource update
• Raised $7.5 million and appointed Chief Geologist and Technical Marketing Advisor

Phase 1 Drilling Confirms Thick High-Grade Zones at Munni Munni

GreenTech Metals Limited (ASX:GRE) has delivered a productive quarter advancing its Munni Munni PGE-Cu-Ni Project in Western Australia’s West Pilbara. The company’s Phase 1 drilling program confirmed new, thicker zones of platinum group elements (PGE), copper, and nickel mineralisation, including some of the highest individual PGE3 (Pt, Pd) plus gold grades recorded at the Ferguson Reef. Highlights include intercepts such as 12 metres at 3.13 g/t PGE3 with 0.30% copper and 0.17% nickel from 90 metres, and a standout 2 metres grading 8.37 g/t PGE3 with 0.63% copper and 0.34% nickel.

These results validate historic drilling through twin holes and core resampling, underpinning GreenTech’s plan to re-estimate the Munni Munni resource to JORC Code (2012) standards. Notably, the drilling revealed copper and nickel mineralisation beyond the previously recognised PGE reef zones, suggesting underappreciated bulk mining potential in shallower sulphide zones.

Independent Review Uncovers Large Copper Anomaly and New Exploration Targets

Adding a fresh dimension to the project, an independent geochemical review by Dr Scott Halley, a specialist in magmatic sulphide systems, has reshaped GreenTech’s understanding of Munni Munni. The review identified a substantial 5km by 2km copper anomaly in the southern part of the intrusion, linked to magnetite-bearing gabbroic rocks, analogous to the famed Bushveld Complex’s mineralisation style.

Dr Halley’s work highlighted discrete high-priority targets around the base of the intrusion, where early sulphide saturation likely sequestered copper, nickel, and PGEs into immiscible sulphide bodies. These basal contact zones are now the focus of a government co-funded Fixed Loop Electromagnetic (FLEM) survey, which commenced in early July to detect deep conductive sulphide accumulations.

Drilling and Heritage Surveys Mobilise Ahead of Major Campaign

GreenTech is preparing for an ambitious 8,300-metre combined Reverse Circulation (RC) and diamond drilling campaign across Munni Munni and the adjacent Whundo Cu-Zn-Au Project. Mobilisation began in late July with one drill rig, while a second rig awaits heritage clearance scheduled for mid-August at Munni Munni. Initial drilling will prioritise high-potential copper-gold extensions at Whundo and existing cleared pads at Munni Munni, with new drill sites to follow.

The heritage survey is a critical step to unlock access across the mineralised footprint and basal target zones. This phased approach aims to maximise rig utilisation and maintain continuous drilling activity.

Corporate Strengthening Supports Resource Update and Scoping Study

Backing its technical ambitions, GreenTech completed an oversubscribed $7.5 million placement at $0.075 per share, exceeding initial targets and bringing strong institutional support. The funds will underpin resource re-estimation, metallurgical testwork prioritising copper-PGE concentrate production, and ongoing exploration.

Key appointments include Ms Heida Mani as Technical and Product Marketing Advisor, bringing extensive international expertise in PGE concentrate marketing and smelter negotiations, and Ms Rachel Backus as Chief Geologist, whose broad experience across multi-commodity systems in Western Australia aligns with GreenTech’s portfolio needs.

Whundo Project Adds High-Grade Copper-Zinc-Gold Potential

Alongside Munni Munni, the Whundo Project offers a high-grade brownfield Volcanogenic Massive Sulphide (VMS) deposit with multiple prospects including Whundo, Ayshia, Yannery, Austin, and Shelby. The upcoming drilling will test shallow extensions of known copper-gold mineralisation and support metallurgical sampling to advance resource updates.

GreenTech’s strategy to consolidate a multi-commodity critical minerals hub in the West Pilbara is bolstered by these developments, positioning the company to meet growing demand in green energy supply chains.

Bottom Line?

GreenTech’s evolving Munni Munni story hinges on upcoming drilling and metallurgical results that will test the extent of its copper potential and underpin a critical resource update.

Questions in the middle?

• Will the ongoing resource re-estimation confirm a significant increase in copper-dominant zones at Munni Munni?
• How will metallurgical testwork outcomes influence the economic viability of a copper-PGE concentrate?
• Can the Fixed Loop EM survey successfully delineate massive sulphide bodies to drive targeted drilling?