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    Antipa Minyari gold–copper MRE: open-pit and underground lens for mine planners

    December 19, 2025|

    Reviewed by Joe Ashwell

    Antipa Minyari gold–copper MRE: open-pit and underground lens for mine planners

    First reported on Australian Mining

    30 Second Briefing

    Antipa Minerals has issued an updated JORC 2012 mineral resource estimate for its 100 per cent-owned Minyari gold–copper project in Western Australia’s Paterson Province, confirming a standalone open-pit and underground development scenario. The MRE now covers the Minyari, WACA, Sundown and Minyari South deposits, with resources reported above a 0.5g/t gold cut-off for open pit and 1.5g/t for underground, and includes both sulphide and oxide material. Antipa is progressing pit optimisation, underground trade-off studies and metallurgical testwork to support a potential prefeasibility study.

    Technical Brief

    • For similar Paterson Province projects, integrated open-pit/underground scenarios are becoming the default development concept.

    Our Take

    Within the 388 Mining stories in our database, Western Australia projects like Minyari tend to move from study to early works faster than most other Australian regions, reflecting comparatively streamlined state-level permitting and established contractor capacity.

    Among the 776 tag-matched ‘Projects’ and ‘Contract Award’ pieces, smaller-cap explorers such as Antipa Minerals often use early contract awards at projects like Minyari to de-risk execution and demonstrate momentum to potential JV partners or acquirers rather than to signal full funding.

    For Western Australia greenfields developments similar to Minyari, our coverage shows that early-stage feasibility work increasingly bakes in modular plant and contract mining options, which can materially lower upfront capex and make marginal deposits financeable for juniors like Antipa Minerals.

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    Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.

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