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    Terra’s high‑grade sulphide system in WA: design and geotech notes for mine planners

    June 22, 2026|

    Reviewed by Tom Sullivan

    Terra’s high‑grade sulphide system in WA: design and geotech notes for mine planners

    First reported on Australian Mining

    30 Second Briefing

    Infill reverse circulation drilling at Terra Metals’ Dante project in Western Australia’s West Musgrave region has confirmed continuity of high‑grade copper–nickel–cobalt sulphide mineralisation along the Southwest Discovery corridor. Assays from southern holes SWRC058 and SWRC0XX (RC drillholes at the corridor’s southern end) extend the known sulphide system, supporting a coherent high‑grade zone rather than isolated lenses. The results will drive tighter resource definition drilling and geotechnical characterisation for potential underground or bulk‑open‑pit development in a remote, infrastructure‑light province.

    Technical Brief

    • Infill pattern tightens drill spacing compared with earlier reconnaissance lines, improving future resource estimation confidence.
    • Chip logging from RC holes will guide follow‑up diamond drilling for structural and geotechnical data acquisition.
    • Dry RC drilling conditions likely targeted to minimise sample contamination and maintain grade integrity in sulphide intervals.
    • Corridor‑scale continuity supports planning of longer step‑out holes rather than isolated fence drilling.
    • For similar mining projects in infrastructure‑poor terranes, early confirmation of continuous sulphides de‑risks future capex on access and camp.

    Our Take

    West Musgrave in Western Australia already features heavily in our copper–nickel coverage as a frontier province, so confirmation of a high-grade sulphide system at the Dante project strengthens the case for more bulk infrastructure and shared services in the region.

    With 318 keyword‑matched pieces on copper and nickel in our database, Terra Metals’ Dante project sits within a crowded pipeline of battery‑metal stories, which may intensify competition for skilled contractors and drilling capacity in WA over the next exploration seasons.

    The presence of cobalt alongside copper and nickel at Dante aligns it with the ‘critical minerals’ narrative highlighted in recent Australian Mining coverage, suggesting Terra Metals could benefit from policy settings and funding mechanisms aimed at multi‑commodity battery metal hubs in Western Australia.

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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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