- Metallurgical test-work confirms conventional gold-copper processing pathway
- Strong gold test-work processing recoveries of 89% to 98% achieved
- Results consistent with or exceeding scoping study outcomes
- Work supports steeper overall open-pit slope angles
Antipa Minerals (ASX:AZY) has confirmed cost-effective processing options for its Minyari Dome gold-copper development project in Western Australia.
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Pre-feasibility study (PFS) metallurgical test-work and geotechnical parameters have confirmed that the ore is amenable under conventional gold-copper processing. It also supports the potential of a lower-cost open mining operation.
The completed metallurgical test-work produced strong gold recoveries, rapid leach kinetics, and the potential to produce both gold doré and a commercial-grade copper concentrate.
In parallel, geotechnical work supports steeper overall open-pit slope angles for the transitional and primary mineralisation zones than those used in the scoping study.
Antipa MD, Roger Mason, said the outcomes provide important inputs for ongoing PFS mine plan optimisation, including evaluation of deeper open pit mining and reduced (and potentially eliminated) reliance on underground mining in the development schedule.
“The outcomes reported today strongly reaffirm the potential of the Minyari development, delivering results that meet or exceed those from the Scoping Study and provide a clearer view of the Project’s optimal processing and development pathway,” he said.
“PFS-level metallurgical test-work has confirmed that Minyari mineralisation is amenable to a conventional processing flowsheet, delivering strong gold recoveries alongside the potential to produce both gold doré and a separate commercial-grade copper concentrate.
“On the mining side, updated geotechnical parameters support steeper open pit slope angles in the transitional and primary domains compared to those assumed in the scoping study. This provides an important input to the pit optimisation, including the evaluation of deeper open-pit mining and the potential to reduce or remove underground mining from the initial mine plan.
“Together, these outcomes materially strengthen the project’s technical foundation as we advance all PFS workstreams and position Minyari as a wholly-owned, standalone gold-copper development in WA’s Paterson Province.”
Mr Mason told shareholders that Antipa remains on track to complete the technical PFS workstreams in Q3 CY2026, with PFS outcomes to follow shortly thereafter.
He noted that the PFS process is now focused on integration and optimisation, including finalisation of mine design inputs, processing assumptions, capital and operating cost estimates, approvals scheduling and development execution planning.
“Completion of the metallurgical and geotechnical workstreams has materially strengthened the technical basis for the project and provides critical inputs into the PFS mine plan, processing flowsheet and financial model.”
AZY was 61¢ before the market opened. Mkt cap $407.7M.
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