Mirasol Advances Large Untested Target Towards Drilling at the Flagship Sobek Copper-Gold Project in the Vicuña District, Chile

VANCOUVER, British Columbia, Sept. 16, 2025 (GLOBE NEWSWIRE) -- Mirasol Resources Ltd. (TSX-V: MRZ) (OTC: MRZLF) (the “Company” or “Mirasol”) is pleased to announce that the geochemical soil survey and IP ground geophysics reinforce 46 South as a high-priority drill target on the central block of the Company’s 100%-owned Sobek Copper-Gold-Silver Project (“Sobek” or “the Project”) in the Vicuña District of Chile . The grid-based soil survey outlined a prominent, large and coherent copper-gold-moly geochemical anomaly that coincidently overlays IP-PDP resistivity and chargeability responses from IP ground geophysics surveys completed late last season. Structurally controlled tourmaline breccias and hydrothermal breccias with porphyry-derived clasts were identified while prospecting and mapping in the target area. The 46 South target resides on the southern margin of a district-scale magnetic high where both the airborne MT and magnetics surveys outlined distinct cylindrical anomalies. To refine the maiden drill program at 46 South an innovative and proven geophysical system will be deployed to further delineate the geometry of both the shallow IP/Res domains and the deeper MT anomalies ahead of drilling.