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    Nanadie high-grade copper–gold zone: open-pit potential for mine planners

    August 31, 2026|

    Reviewed by Joe Ashwell

    Nanadie high-grade copper–gold zone: open-pit potential for mine planners

    First reported on Australian Mining

    30 Second Briefing

    Solstice Minerals has defined a broad, near-surface copper–gold zone at its Nanadie project in Western Australia, with recent reverse-circulation drilling returning a combined intercept of 172m at 0.69 per cent copper and 0.30g/t gold from 54m depth. The emerging higher-grade core sits within a rapidly expanding mineralised footprint, pointing to potential for a larger open-pit development scenario rather than a narrow underground target. For mine planners and geotechnical teams, the thick, continuous intercept at shallow depth suggests favourable stripping ratios and straightforward pit wall design if continuity is confirmed.

    Technical Brief

    • Broad intercepts from 54m downhole imply mineralisation starts well above typical fresh-rock pit floors.
    • Continuous RC coverage allows early geostatistical modelling of grade continuity and potential dilution envelopes.
    • RC chip logging will be critical for distinguishing oxide–transition–sulphide zones for metallurgical domain definition.
    • Near-surface geometry favours conventional truck–shovel mining with minimal pre-strip if continuity holds.
    • Shallow mineralisation reduces haul profiles and may allow in-pit crushing to optimise operating costs.
    • Early pit optimisation studies can quickly test sensitivity to copper price and strip ratio assumptions.

    Our Take

    The earlier 148m intercept at the Nanadie project reported on 20 August 2026, combined with this 172m interval from 54m depth, suggests Solstice Minerals is progressively defining a thicker, near-surface copper–gold envelope that could suit bulk open-pit scenarios rather than narrow-vein targeting.

    In our database of 598 copper- and gold-keyword pieces, Western Australia copper stories are still relatively sparse compared with iron ore and gold, so Nanadie gives Solstice Minerals exposure to a commodity mix that is less crowded in the state but strategically aligned with energy-transition demand.

    A 0.69 per cent copper grade over a long intercept in Western Australia positions Nanadie as potentially competitive against other Australian copper projects that often rely on deeper, more structurally complex ore bodies, which can translate into higher development and operating risk.

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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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