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    Larvotto’s new Hillgrove production milestone: flotation and offtake notes for engineers

    September 21, 2026|

    Reviewed by Tom Sullivan

    Larvotto’s new Hillgrove production milestone: flotation and offtake notes for engineers

    First reported on Australian Mining

    30 Second Briefing

    Larvotto Resources has produced the first antimony and gold concentrate from the redeveloped Hillgrove mine in New South Wales, following the August restart of processing operations. The milestone comes after completion of a plant upgrade programme that brought new flotation cells and concentrate filter presses online to handle antimony–gold ore. Commissioning progress towards steady-state production signals renewed sulphide flotation capacity at a site historically known for complex refractory mineralogy, with implications for concentrate quality and downstream smelting contracts.

    Technical Brief

    • Concentrate filter presses have been brought online to dewater antimony–gold concentrates for transport and smelting.
    • Early concentrate production provides metallurgical performance data to refine reagent schemes and flotation operating parameters.
    • For similar brownfield sulphide projects, phased recommissioning of legacy flotation circuits reduces capex and ramp-up risk.

    Our Take

    The earlier restart plan for Hillgrove in New South Wales targeted 4,900 t/y antimony and 40,500 oz/y gold over eight years, so hitting new production milestones likely underpins Larvotto Resources’ ability to market Hillgrove as a reliable gold–antimony supplier in offtake or financing discussions.

    Hillgrove’s antimony output positions Larvotto within the small cluster of critical-mineral stories in our mining database, which tend to attract more scrutiny on processing, environmental performance and downstream refining options than pure gold plays in Australia.

    Larvotto’s parallel push into copper around Mt Isa via the Blockade mine and the proposed Hammer Metals acquisition suggests Hillgrove’s performance could become a cash-flow anchor that supports higher-risk copper exploration and development activity in Queensland.

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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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