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    Minyari Dome conventional flowsheet: design and risk notes for mine planners

    July 7, 2026|

    Reviewed by Tom Sullivan

    Minyari Dome conventional flowsheet: design and risk notes for mine planners

    First reported on Australian Mining

    30 Second Briefing

    Antipa Minerals has advanced its Minyari Dome gold–copper project in Western Australia after pre-feasibility metallurgical test-work confirmed the ore is amenable to a conventional processing flowsheet, avoiding the need for complex or novel treatment routes. Updated geotechnical parameters from the PFS support potential optimisation of the open-pit and underground mine designs, including steeper pit wall angles and revised stope geometries. The combination of standard gold–copper processing and refined rock mass data is likely to reduce technical risk and improve project economics.

    Technical Brief

    • Conventional gold–copper flowsheet selection avoids additional capital for specialised or bespoke processing equipment.
    • Metallurgical test-work at PFS level provides sufficient variability coverage to support initial plant design assumptions.
    • Confirmation of standard processing allows use of proven reagent schemes and off-the-shelf mechanical equipment.
    • Updated geotechnical parameters enable refinement of pit slope design inputs for subsequent reserve estimation.
    • Revised rock mass characterisation supports optimisation of underground stope shapes and sequencing assumptions.
    • Alignment of geotechnical and metallurgical datasets at PFS stage reduces contingency required in cost estimates.

    Our Take

    The sequence of recent Minyari Dome pieces in our database – from the December 2025 standalone open‑pit resource to the April 2026 resource upgrade – suggests Antipa Minerals is deliberately de‑risking the Western Australia gold–copper project towards a development decision rather than positioning it purely as an exploration play.

    With Minyari Dome sitting in the Paterson Province, where several larger gold–copper operations already use established processing routes, a ‘conventional pathway’ likely improves financing prospects by signalling lower metallurgical and execution risk compared with more complex flowsheets seen in some other copper items in our coverage.

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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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