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    Terrain’s Lightning maiden resource push: drilling takeaways for mine planners

    May 22, 2026|

    Reviewed by Tom Sullivan

    Terrain’s Lightning maiden resource push: drilling takeaways for mine planners

    First reported on Australian Mining

    30 Second Briefing

    Exploration momentum is building across Australia as Auravelle Metals, Terrain Minerals and Amara Minerals push gold and antimony projects forward via reverse circulation (RC) drilling, technical studies and early-stage resource work. Terrain is advancing its Lightning gold project towards a maiden resource while also running new RC drilling campaigns at Nuckulla Hill to test extensions to known mineralisation. Amara is reporting growing confidence in a deepening antimony system at Lauriston, signalling potential for larger-scale, higher-grade underground targets.

    Technical Brief

    • Reverse circulation drilling at Nuckulla Hill targets down-dip and along-strike extensions of existing gold intercepts.
    • Lightning workstreams include detailed geological modelling and preliminary pit shell optimisation to frame resource extents.
    • Terrain is integrating new RC data with historical drilling to refine structural controls on Lightning mineralisation.
    • Auravelle’s programmes are focused on defining continuity of gold grades along key shear-hosted trends.
    • At Lauriston, Amara’s drilling is stepping progressively deeper to track antimony-bearing lodes at depth.

    Our Take

    Terrain Minerals’ Lightning work sits alongside a cluster of Western Australian gold updates in our database, including Odyssey Gold’s Tuckanarra and Lefroy Exploration’s Lucky Strike, signalling that junior gold explorers are still committing capital to drill-outs despite volatile bullion pricing.

    Auravelle Metals appears repeatedly across recent Australian Mining exploration round-ups, suggesting it is building a multi-asset gold and base metals pipeline rather than a single-asset focus, which can matter for counterparties assessing JV or farm-in optionality around projects like Lightning or Lauriston.

    The combination of gold and antimony in Australia is relatively uncommon in our coverage compared with pure gold plays, so any confirmed antimony association at Lightning, Nuckulla Hill or Lauriston could give Terrain or Amara a strategic angle into critical minerals narratives as well as traditional precious metal markets.

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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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