GSC announces start of drilling at Cerro Negro prospect
Published by Will Owen,
Editor
Global Mining Review,
Great Southern Copper plc has announced that diamond drilling has commenced at its Cerro Negro prospect, targeting high-grade Cu-Ag-Au mineralisation at the Mostaza mine.
Highlights:
- Phase I diamond drilling has commenced at the company’s high-grade Mostaza Cu-Ag-Au mine prospect with hole CNG25-DD001 in progress.
- Diamond drilling aims to confirm historical drilling grades and thickness plus step-out holes are designed to extend the known mineralised zone to depth and along-strike.
- Initial drilling plan at Mostaza is for up to 5 – 10 diamond drill holes for up to 500 – 1000 m.
- A historical (1981) non-JORC mineral resource estimate for Mostaza reported 190 600 t of measured and indicated sulfide, with grades of 1.2% Cu, 80 g/t Ag, and 0.45 g/t Au. Plus an additional 63 000t of inferred sulfide resource at depth.
- High-grade (>1.0% Cu) Cu-Ag mineralisation at Mostaza is open in all directions.
- Hole CNG25-001 targets reported results of historical resource drilling including:
- EDH15: 8 m of 2.63% Cu, 153g/t Ag from 37m, within a broader zones of:
- 19 m of 1.52% Cu, 92 g/t Ag from 33 m.
- 54 m of 0.62% Cu (Ag assays incomplete over full interval) from 10 m.
- EDH15: 8 m of 2.63% Cu, 153g/t Ag from 37m, within a broader zones of:
- At Viuda prospect, scout RC drilling has been completed and successfully identified porphyry type alteration in all drill holes. Assay results are awaited.
Sam Garrett, CEO of Great Southern Copper, comments:
“We are excited to start the new year with the diamond drilling programme at Mostaza mine. Historical drilling at Mostaza has clearly not tested the extents of mineralisation and was focussed on high grade lenses ignoring broader zones of copper-silver mineralisation.
“Diamond drilling will initially focus on confirming historical grades and drilling out the known high-grade copper-silver-gold mineralisation at the Mostaza mine, before testing along trend to the south where our recent exploration results have confirmed evidence of similar mineralisation at surface.
“The Viuda scout RC drilling programme was completed just before Christmas and successfully identified porphyry style alteration in all the holes. All samples are at the laboratory and we look forward to reporting the results of this work soon.”
Read the article online at: https://www.globalminingreview.com/exploration-development/06012025/gsc-announces-start-of-drilling-at-cerro-negro-prospect/
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