VANCOUVER, British Columbia, Oct. 02, 2025 (GLOBE NEWSWIRE) -- Fortuna Mining Corp. (NYSE: FSM | TSX: FVI) is pleased to announce it has executed a binding Heads of Agreement (HOA) with DeSoto Resources Limited, an Australian-listed gold exploration company, to establish an exploration alliance and joint venture across the highly prospective Siguiri Basin in Guinea. New Exploration Front Paul Weedon, Senior Vice President of Exploration at Fortuna, commented, “Guinea’s Siguiri Basin has demonstrated potenti ...