Castillo Copper Limited (ASX:CCZ) has confirmed significant cobalt mineralisation in diamond core assay results for drill-holes BH1 and BH2 at The Sisters Prospect, within the BHA Project’s East Zone, in NSW, Australia.
Notably, the assays confirmed the standout drill-hole was BH1, with the best intercepts of 24m @ 424ppm Co from 103m including 2m @ 1,120ppm Co from 107m; 1m @ 873ppm Co from 120m; and 2m @ 486ppm Co from 125m (BH1).
“Having reviewed The Sisters Prospect’s assays, the Board is now convinced the underlying cobalt system within the BHA Project’s East Zone could extend beyond the Defined Target Area,” Managing Director, Dr Dennis Jensen, said.
“Whilst this will be the subject of future exploration campaigns, the geology team are aiming to complete the primary cobalt MRE shortly. In a welcome left field development, diamond core assays from the Iron Blow Prospect highlight significant REE mineralisation was intersected which further bolsters the BHA Project’s exploration potential.”
Dr Jensen said that as The Sisters Prospect is located NNW from the Defined Target Area it provides new evidence there is potentially a larger than anticipated cobalt system within the BHA Project’s East Zone.
Geological modelling for primary cobalt MRE
After considerable effort codifying data from over 6,000 drill-holes within the Defined Target Area, the block models are nearing completion. Pleasingly, the geology team are now aiming to finalise the global MRE – focused on cobalt – which includes Fence Gossan, Reef & Tors Tank, Ziggy’s Hill and now The Sisters Prospect within the next few weeks.
Rare Earth Elements
In a surprising development, the assays confirmed the presence of REEs at The Sisters and Iron Blow Prospects, with the best intercepts as follows: 12m @ 383ppm TREO from 80m (BH2; The Sisters) 8m @ 1,270ppm TREO from 150m (DD90-IB3; Iron Blow) 12m @ 297ppm TREO from 199m (DD90-IB3; Iron Blow) The REE results from the Iron Blow Prospect will be followed up, as there are six intervals with anomalous TREO readings that could potentially be part of a larger underlying system.
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