Explorer Black Cat Syndicate (ASX:BC8) continues to grow the Mt Clement project in Western Australia, which is already host to one of Australia’s largest and highest-grade undeveloped antimony deposits.
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The latest results from a 24-hole Mt Clement diamond drilling added further high-grade material to the resource of 794,000 tonnes at 1.7% antimony.
Black Cat’s program primarily targeted the Taipan lode structure with significant results including 5.0m at 2.52% Sb, 4.14% lead and 34.38 grams per tonne (g/t) silver from 118.00m; and 1.10m at 3.10% Sb, 6.37% lead and 35.10g/t silver from 246.20m – which was drilled outside current resource.
Additional mineralisation was intersected in the Gwardar lode, supporting mapping at surface and adding to the company’s geological understanding.
A new lode structure was also discovered, Black Cat wrote today, in an exploration incentive scheme (EIS) co-funded hole, which included a zone of antimony-lead-silver mineralisation adjacent to a broad zone of silver mineralisation.
Black Cat has now begun metallurgical test work focussing on antimony recoveries, with drilling at Mt Clement planned to recommence in March CY26. Previous metallurgical test work in CY14 focused on lead rather than antimony recovery and considered SB to be a deleterious element to be suppressed.
Despite not being the target metal, favourable recoveries for antimony of approximately 85% were achieved. Lead and silver recoveries were also strong at 85% and 92%, respectively. Gold recoveries were not tested, but gold was present in the concentrate. These results will inform the current test program, which will guide the process plant flowsheet, engineering and design.
Drilling and metallurgical results will be included in an economic study to be undertaken later this year.
The positive drilling results came after Black Cat was invited to showcase Mt Clement in a WA government critical minerals delegation to North America next month.
Mt Clement is on a granted mining lease approximately 30km from established infrastructure at Black Cat’s Paulsens gold operation.
It also sits in the Northern Australia Infrastructure Facility zone, where the Federal gov’t is looking to transform the region by financing infrastructure development, particularly related to critical minerals such as antimony.
BC8 is down -4.87% to $1.32. Mkt cap $1B.
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