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Orestone Prepares for AirMT Survey at Captain Gold Porphyry Project, BC

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Vancouver, British Columbia--(Newsfile Corp. - March 13, 2025) - Orestone Mining Corp. (TSXV: ORS) (OTC Pink: ORESF) (FSE: O2R2) ("the Company") is pleased to announce that it is planning an airborne MagnetoTelluric (AirMT) survey to cover the partially defined, T-2 conductivity target at the Company's 100 percent owned Captain Gold Porphyry Project in North Central BC prior to the next drill programe. The project is located 40 kilometres north of Fort St. James and 30 kilometres south of Mt. Milligan, a large open pit copper-gold mine. The T-2 target is the southernmost target zone outlined on the property to date. The Company is obtaining contractor quotes and refining the parameters of the survey at this time. Initially the new survey will consist of 18 lines at 7.2 kilometres in length totalling 157 line kilometres and we expect to complete the program in the summer of 2025.

The Captain Project hosts a gold dominant porphyry style mineralized system occurring within a 5 kilometre long, N-S trending corridor of low resistivity defined by a 2022 AirMT survey (for larger maps click here). Three targets occur at the intersection of interpreted northeast and northwest trending cross faults. This type of low resistivity feature is often related to large porphyry systems. Also gold rich porphyry systems such as Red Chris mine in northeastern British Columbia are typically strongly structurally controlled and are characterized by a narrow zone of multiple intrusive dyke phases widening at depth with a halo of copper-gold rich disseminated sulphides and quartz stock works overlying the dyke system.

Captain Project Low Resistivity Trend Plan View

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The T-2 anomaly is similar in intensity to the T-1 target. The central T1 target, an extensive 2 X 2 kilometre tabular zone of porphyry style alteration hosts zones of sericite-potassic-feldspar alteration containing gold-copper mineralization from 20-160 metres thick grading 0.20 to 0.84 g/t gold and 0.05-0.11 percent (500-1100 ppm) copper. Drill core logging has identified altered and mineralized porphyry dykes, both in the hanging wall and dipping into the observed MT conductor implying the presence of a potential intrusive porphyry system. It is thought to be highly probable that the next phase of drill holes will intersect a gold-copper porphyry intrusive system with mineralization similar to that found in the overlying dykes and volcanics.