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West Cobar Metals (ASX:WC1) has defined a maiden inferred resource of 19.7 million tonnes of 0.58% copper equivalent – or 0.30% Cu, 0.10% antimony, 4.7 g/t silver – at its Bulla Park project in New South Wales.
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This is based on a cutoff grade of 0.21% Cu.
Additionally, the West Cobar project’s copper-antimony-silver mineralisation is open along strike and down dip, and WC1 has been able to set an exploration target of 30Mt to 50Mt of 0.47% to 0.66% Cu equivalent – or 0.23 to 0.33% Cu and 0.08 to 0.12% Sb and 4 to 6g/t Ag – alongside the MRE.
The development of this target was based on an assessment of exploration drill results and geophysical data.
Looking ahead, the company anticipates Bulla Park’s large tonnage and the thick zone (over 60m) of mineralisation will enable bulk mining methods – potentially including open pit mining – while the project’s strong metallurgical characteristics should facilitate the production of a copper-silver concentrate and a separate, saleable antimony product such as antimony sulphide.
Located in NSW’s Cobar mining district, Bulla Park has silver mineralisation based mostly on disseminated tetrahedrite with minor amounts of chalcopyrite and stibnite.
WC1 has also previously conducted metallurgical test work yielding a relatively clean copper-silver concentrate and a separate antimony product, with no significant contaminant minerals present apart from arsenic, which can then be removed separately during the leaching process.
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This included recoveries of 94.6% copper, 82.6% antimony, and 84.1% silver to date, but further testing is expected to improve these.
WC1 has been trading at 1.5 cents.
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