Business
Interim Results
Great Southern Copper plc announced its interim results for the six months ended 30 September 2025, highlighting significant exploration progress at its Especularita Project in Chile. The company reported high-grade copper and silver assay results at the Cerro Negro prospect, including intercepts of 16.15% copper and 646 g/t silver, and confirmed a new porphyry gold system at Viuda Negra. Post-period, Great Southern Copper successfully raised £2.5 million through a private placing to fund ongoing exploration, with intangible assets increasing to £2.71 million and cash and cash equivalents standing at £261,000 as of 30 September 2025. The company's operating loss for the period was £1.17 million. Disclaimer*
About this update from Great Southern Copper Plc
[{"type":"text","content":"\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 \n9 December 2025\n \nGreat Southern Copper plc\n \n(\"GSC\" or the \"Company\") \n \nInterim Results\n \nGreat Southern Copper plc (LSE: GSCU), the Company focused on copper-gold-silver exploration in Chile, announces its results for the six months ended 30 September 2025 (\"the Period\").\n \nHIGHLIGHTS\n \nEspecularita Project\n \nCerro Negro\n \n \n· Assay results released at the start of the Period for the Company's maiden Phase I drilling programme at the Mostaza mine demonstrate the high-grade nature of the Mostaza system, with highest reported assay grades of 16.15% copper (\"Cu\") and 646 grammes per tonne (\"g/t\") silver (\"Ag\"), with four samples reporting copper assay grades over 8.0% Cu. Other standout intercepts included 33 metres (\"m\") at 1.96% Cu and 60.6 g/t Ag and 9.67% Cu & 175 g/t Ag from 116.4m.\n \n· In conjunction with the drilling, ground exploration work extended the potential mineralised strike of the Mostaza mineralised system by a further two kilometres (\"km\") south of the historic Mostaza mine defining the \"Mostaza Fault Zone\", with new breccia-hosted mineralisation, altered volcanic units and additional artisanal workings identified.\n \n· Geophysical surveys were conducted across the Mostaza Fault Zone, targeting deeper extensions of the high-grade lenses and defining priority drill targets. These surveys were undertaken to assist in targeting Phase III exploration drilling at Cerro Negro up to two kilometres south of the Mostaza mine (\"Mostaza\") where Phase I drilling intersected significant Cu-Ag mineralisation.\n \no The survey identified an IP anomaly consistent with the high-grade sulphide mineralisation drilled beneath the Mostaza mine, confirming the potential for sulphide mineralisation along trend south of the mine.\n \n· Phase II d...