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Drill Results Extend Mineralisation at Cerro Negro
Great Southern Copper PLC announced positive scout RC drilling results at its Cerro Negro prospect, extending mineralisation up to 1.5 kilometers south of the Mostaza mine and discovering new silver-lead-zinc lenses at depth. Notable intercepts include 26 meters at 62.8 g/t silver, 0.43% zinc, and 0.19% lead from 200 meters in RC041, and 16 meters at 32.9 g/t silver and 0.19% lead from 24 meters in RC040. Additionally, a new copper-silver zone was found, with RC048 intersecting 6 meters at 0.72% copper and 78.27 g/t silver from 24 meters. These results show a strong correlation with geophysical targets, supporting plans for Phase IV resource and exploration drilling. Disclaimer*
About this update from Great Southern Copper Plc
[{"type":"text","content":"\n\n \nTHIS ANNOUNCEMENT CONTAINS INSIDE INFORMATION AS STIPULATED UNDER THE UK VERSION OF THE MARKET ABUSE REGULATION NO 596/2014 WHICH IS PART OF ENGLISH LAW BY VIRTUE OF THE EUROPEAN (WITHDRAWAL) ACT 2018, AS AMENDED. ON PUBLICATION OF THIS ANNOUNCEMENT VIA A REGULATORY INFORMATION SERVICE, THIS INFORMATION IS CONSIDERED TO BE IN THE PUBLIC DOMAIN.\n \n \n23 March 2026\n \nGreat Southern Copper plc\n(\"GSC\" or the \"Company\")\n \nScout RC Drilling Results Extend Mineralisation 1.5km along strike at Cerro Negro\n \nHigh-grade silver-base metal mineralisation intersected in all holes\n \nGreat Southern Copper plc (LSE: GSCU), the company focused on copper-gold-silver exploration in Chile, is pleased to announce latest results for the scout RC holes of its Phase III drilling campaign at Cerro Negro, part of the Especularita Project.\n \nHighlights:\n· High-grade Ag-Cu+Pb-Zn intersected in all RC holes with silver grades up to 105 g/t Ag\n· Results extend strike of mineralisation up to 1.5km south of Mostaza mine and open\n· New Ag-Pb-Zn lenses discovered at depth, associated with targeted IP chargeability anomalies, including;\no RC041: 26m @ 62.8 g/t Ag, 0.43% Zn and 0.19% Pb from 200m, including\n§ 12m @ 101.8 g/t Ag, 0.70% Zn and 0.28% Pb from 204m\n· Near-surface Ag-Pb mineralisation confirms leached upper zone of the system:\no RC040: 16m @ 32.9 g/t Ag and 0.19% Pb from 24m, including\n§ 8m @ 56.2 g/t Ag and 0.24% Pb from 26m\n· New Cu-Ag zone intersected in hanging wall volcanics, defines a high-priority near-surface target:\no RC048: 6m @ 0.72% Cu and 78.27 g/t Ag from 24m, including\n§ 2m @ 1.04% Cu and 86 g/t Ag from 24m\n· Strong correlation between mineralisation and IP chargeability anomalies, confirming effectiveness of geophysical targeting\n· Planning in progress for Phase IV resource and exploration drilling\n· Significant exploration targets at Monolith and southern Mostaza extension remain untested\n· GSC holds option to own 100% of the Cerro Negro prospect, including the Mostaza mine\n· Prospect located at low elevation with excellent access to ...