Great Southern Copper Expands High-Grade Copper-Silver Footprint at Cerro Negro

Great Southern Copper PLC (LSE:GSCU) announced new Phase III drilling results from its Cerro Negro prospect in Chile, confirming the presence of multiple stacked high-grade copper-silver lenses at the Mostaza deposit and indicating that mineralisation continues to widen both at depth and along strike.

Recent diamond drill holes DD033, DD036 and DD034 delivered notable copper-silver intersections within a broader zone of lower-grade material. The presence of associated lead-zinc mineralisation supports the interpretation of a zoned system that may extend beyond 80 metres in overall thickness.

The latest findings significantly increase the perceived scale and copper potential of the Mostaza discovery. The results point to both high-grade lens-style mineralisation and larger bulk-tonnage opportunities, potentially strengthening the long-term economic prospects of the project.

The company is now preparing for a Phase IV drilling campaign focused on resource definition and further exploration. Additional Phase III assay results, along with metallurgical testing, are still pending and are expected to help refine the geological model and prioritise the most prospective drill targets.

The company’s near-term outlook remains influenced by its financial profile, characterised by pre-revenue operations, expanding losses and ongoing negative free cash flow, although it carries no reported debt. Technical indicators appear mixed to weak, with the share price trading below its 20-day moving average and momentum signals subdued. Valuation metrics such as P/E ratio and dividend yield are not currently applicable.

More about Great Southern Copper PLC

Great Southern Copper is a London-listed exploration company focused on copper, gold and silver assets in Chile. Its flagship Especularita project includes the Cerro Negro prospect and the historic Mostaza mine. The project benefits from low elevation and proximity to established mining infrastructure. The company holds an option to acquire a 100% interest in the Cerro Negro project.