Great Southern Copper (LSE:GSCU) has released results from its Phase III scout reverse-circulation drilling programme at the Cerro Negro prospect in Chile, confirming high-grade silver and base-metal mineralisation extending about 1.5km south of the historic Mostaza mine. Every reported drill hole intersected notable silver mineralisation accompanied by copper, lead and zinc, including the discovery of a new near-surface copper–silver zone and several stacked silver–lead–zinc lenses that align closely with induced polarisation chargeability anomalies.
The assay results reinforce the company’s interpretation of a large hydrothermal system shaped by structural controls and composed of multiple mineralised lenses. They also support the effectiveness of geophysical targeting in identifying new drilling opportunities. Several high-priority areas along the Mostaza Fault Zone, as well as the nearby Monolith target area, remain largely untested. The new findings will feed into planning for an expanded Phase IV drilling campaign aimed at resource definition and further exploration, potentially increasing the overall scale and significance of the Cerro Negro project within the region.
Despite exploration progress, the company’s outlook continues to be constrained by weak financial fundamentals, including its pre-revenue status, widening losses and persistent negative free cash flow, although it benefits from having no reported debt. Technical indicators are mixed to weak, with the share price trading below its 20-day moving average and momentum indicators remaining subdued. Valuation metrics offer limited guidance due to the absence of meaningful P/E and dividend yield data.
More about Great Southern Copper PLC
Great Southern Copper is a London-listed exploration company focused on copper, gold and silver projects in Chile. Its flagship Especularita Project includes the Cerro Negro prospect and the historic Mostaza mine, located within the coastal metallogenic belt at low elevation with good access to infrastructure. The company currently holds an option to acquire a 100% interest in the Cerro Negro project.
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