Rokmaster Commences IP Survey at Mystery to Refine Porphyry Targets

About this update from Rokmaster Resources Corp.

Vancouver, British Columbia--(Newsfile Corp. - June 1, 2026) - Rokmaster Resources Corp. (TSXV: RKR) (OTCQB: RKMSF) (FSE: 1RR1) ("Rokmaster" or "the Company") provides an update on exploration activities within the Nechako Project. Crews will soon mobilize to complete a detailed Induced Polarization Survey ("IP Survey") over several porphyry Cu-(Mo±Au) targets on the Mystery Property. This survey will sharpen targets planned for drill testing during the fall. The IP Survey will be conducted by SJ Geophysics and is planned to be a pole-dipole active array capable of investigating chargeability and resistivity to depths of 300-400 m (Figure 2). The current targets include the B2 and B3 zones which exhibit elevated copper, molybdenum, and gold in rock sample results associated with strongly potassic-altered andesite hosting a dense stockwork of pyrite-chalcopyrite-biotite-magnetite veinlets. The B2 Zone is exposed along a creek for approximately 200 m. The surrounding area, including ~800 m toward the B3 Zone, is covered by glacial till so the IP Survey will greatly assist in planning specific drill targets in this area. Approximately 2.5 km to the northeast, an IP Survey is planned to investigate a coincident soil and magnetic anomaly in the northern portion of the Ford Anomaly area. This area is underlain by rhyolite belong to the Kasalka Group which displays strong phyllic alteration over a broad area including intense sericite replacement and disseminated pyrite. Hyperspectral work completed in the previous years indicates that higher-temperature paragonite occurs below a certain elevation in the Ford Anomaly area inferring that potential exists at depth. Another ~1.1 km to the north of the Ford Anomaly, the planned IP Survey will test an area of stockwork quartz veining in sericite- and potassic-altered porphyritic monzonite. A Re-Os age dating study1 of molybdenite mineralization in this area indicates that it falls within the range of the productive late Cretaceous Bulkley Intrusive Suite that is related to porphyry systems in the region such as the Huckleberry, Ox, Seel, and Poplar Deposits. Field work on the Fox-Coconut Property is planned for early June to further explore the high-grade gold and silver mineralization on that Property. Geochemical results from the drill program completed on the Hanson Property in A...

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