Fortuna Expands Southern Arc Mineralization with Drill Intercept of 1.7 g/t Au over 29.6 meters and a further 2.0 g/t Au over 20.0 meters from DSDD574 at the Diamba Sud Gold Project, Senegal

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[{"type":"text","content":"Fortuna Expands Southern Arc Mineralization with Drill Intercept of 1.7 g/t Au over 29.6 meters and a further 2.0 g/t Au over 20.0 meters from DSDD574 at the Diamba Sud Gold Project, Senegal\n\n\n\n VANCOUVER, British Columbia, Dec. 08, 2025 (GLOBE NEWSWIRE) --\n \n Fortuna Mining Corp. (NYSE: FSM | TSX: FVI)\n \n is pleased to report additional exploration drilling results from the Southern Arc deposit at its Diamba Sud Gold Project in Senegal. Diamba Sud is a PEA-stage project with robust economics, highlighted by an estimated after-tax NPV\n \n\n 5%\n \n\n of US$563 million and an IRR of 72% at a gold price of US$2,750 per ounce. The project is currently advancing toward a feasibility study and a construction decision targeted for the second quarter of 2026.\n \n\n Paul Weedon, Senior Vice President of Exploration, commented “Southern Arc continues to deliver strong results with high grade intersections from both infill and extension drilling. Infill highlights include drillhole DSDD555, which returned 6.8 g/t gold over an estimated true width of 35.5 meters.” Mr. Weedon continued, “Importantly, drilling to the southwest of the current optimized pit shell is expanding mineralization, returning broad and consistent gold intervals. This includes drill hole DSDD574, which intersected 1.7 g/t gold over an estimated true width of 29.6 meters, and a further 2.0 g/t over an estimated true width of 20.0 meters.” Mr. Weedon concluded, “These results will feed into an updated resource estimate expected in the first quarter of 2026.”\n \n\n\n The PEA is preliminary in nature and includes inferred mineral resources that are considered too speculative geologically to have the economic considerations applied to them that would enable them to be categorized as mineral reserves; as such, there is no certainty that the PEA results will be realized. Mineral resources that are not mineral reserves do not have demonstrated economic viability\n \n\n\n 1\n \n\n\n\n\n Southern Arc Prospect Drilling Highlights\n \n\n\n A further 63 reverse-circulation and diamond drill hole, totalling 9,619 meters, have been completed at Southern Arc (see Figure 1) since the Company´s previous exploration update (refer to\n \n\n Fortuna news release dated May 27, 2025\n \n\n ). Drilling is continuing with...

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