Castillo Copper Ltd (ASX:CCZ) has intersected a 9.6 metre mineralised diamond drill core from 50 metres depth at the Cangai Copper Mine in New South Wales.
This drill core includes two sub-intersections exhibiting mineralisation up to 45% chalcopyrite and 15% sphalerite, which are now being assayed.
In addition to chalcopyrite and sphalerite, the two massive sulphide intercepts – from 49.9 metres to 50.8 metres and 53.1 metres to 54.3 metres of pyrite and pyrrhrotite.
Diamond drill-hole profile
All collected samples from the diamond drilling campaign have been sent to the laboratory for further analysis.
Castillo chairman Peter Meagher said: “Exploration at the Cangai Copper Mine continues gaining momentum, with high-grade diamond drill core extracted from a shallow depth.
"Further, the DHEM (downhole electromagnetic) results have provided greater clarity on incremental sizeable massive sulphide conductors interpreted to be open at depth which may deliver the project scale.
“The geology team are now optimising new priority targets, so the current drilling campaign can finish up enabling the Board to have a solid understanding of the ore body going into 2019.”
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Based on the evidence seen from the diamond drill core and what is already known, the geology team increasingly believe Cangai Copper Mine is a unique high-grade polymetallic mineralised system.
Notably, over the course of the two drilling campaigns this year, the assay results have confirmed considerable high-grade mineralisation, including:
• Drill-hole CC0023R, the standout, delivering excellent results from shallow depth including: 11 metres at 5.94% copper, 2.45% zinc and 19.1 g/t silver including 1 metre at 10.25% copper, 1.68% zinc & 32.5 g/t silver from 48 metres; and
• Assays for CC0026-34R highlighted consistent high-grade the results up to 4.57% copper, 1.41% zinc and 19.1 g/t silver.
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Undertaking DHEM surveys has been key to identifying several sizeable high-grade massive sulphide conductors under the Greenberg, Volkhardts and Mark lodes.
Encouragingly, after analysing the data, the geophysicist consultant determined the mineralised system below these conductors is open at depth – clearly highlighting the potential scale of the ore body at Cangai Copper Mine.
The geology team now has several new, high priority massive sulphide targets to optimise and factor into the balance of the current phase II drilling program.
Moreover, further DHEM work will accompany the remainder of the drilling campaign to garner a broader understanding of potential extensions to the known mineralisation.