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Hercules Metals Corp. Intersects Margins of New Blind Copper Porphyry System at Southern Flats Zone and Reports Drilling Results for HER-25-25
Hercules Metals Corp. announced that drill hole HER- 25-25 ("25-25") has intersected a new zone of mineralization, consistent with the outer margins of a porphyry center, at the Southern Flats zone on its Hercules project in western Idaho (the "Property"). The hole encountered overlapping phyllic and outer potassic alteration, with a unique style of vein-hosted copper mineralization grading: 177 m of 0.66% CuEq (0.56% Cu, 92 ppm Mo, 2.2 g/t Ag, 0.031 g/t Au); within 271 m of 0.51% CuEq (0.43% Cu, 75 ppm Mo, 2.6 g/t Ag, 0.024 g/t Au). Due to a strong fault zone, the hole was stopped in encouraging geology, and it was elected to step out 200 m to the west, in the direction of increasing alteration, veining and mineralization. The step-out hole, HER-26-01, is now at the top of the target zone, where it is testing the central axis of a large MT conductivity anomaly, in search of the causative porphyry at Southern Flats. PQ drill rod casing has been pushed significantly deeper in HER- 26-01, in preparation for deeper drilling. HER-25-25 encountered alteration consistent with the outer margins of a porphyry system, characterized by a transition from lower temperature phyllic (quartz-sericite-pyrite) alteration to more proximal, and higher temperature, early biotite (outer potassic) alteration. The gradual onset of potassic alteration is also accompanied by an increasing ratio of chalcopyrite to pyrite. Copper mineralization occurs with both early halo type and quartz veins. The mineralized quartz veins are distinct from the style of mineralization at Leviathan, where quartz veins typically do not host significant copper. This indicates potential for grades to increase in proportion to the density of quartz veins, which are often highest at the center of a porphyry system. Geological Description and Core Photos: HER-25-25 encountered strong quartz-sericite-pyrite (phyllic) alteration transitioning downhole to increasing early biotite (outer potassic) alteration and chalcopyrite to pyrite ratios. Late pyrite-rich phyllic alteration and D-type veins overprint the early biotite alteration to the bottom of the hole, consistent with a marginal part of the system, despite the strong grades encountered. Certain porphyry systems are cored by a more intense zone of inner potassic alteration, characterized by k-feldspar and magnetite, in addition to biotite, which is often accompanied by significantly higher quartz vein densities. Whole core box and select close-up photographs are shown below to illustrate the alteration, veining, and fine-grained mineralization encountered in HER-25-25. Pegasus Target: Maiden drilling has commenced at the Pegasus Porphyry Target, approximately 3.6 km southeast of HER-25-25 and HER-26-01. The Pegasus target was identified by a district- scale MT geophysical survey in 2025 that indicates potential for the trend of porphyry intrusions to continue further south from Southern Flats. A first phase of IP surveying was completed over the target in early 2026, with a second phase now underway at both the Pegasus and the separate Hook Target, to further map the distribution of anomalous chargeability at each area. The Pegasus target is located on flat, subdued topography, adjacent to a highway and high-voltage transmission line infrastructure. Sample Analysis and QAQC: All drill core samples were prepped at MSA Labs in Elko, Nevada and analyzed at MSA Labs in Langley, British Columbia, an ISO 17025 and ISO 9001 certified laboratory. Samples were dried and crushed to 2 mm, from which a 250 g sub-sample split was then pulverized to 85% passing a 75 micron sieve. Following preparation, assays were determined by the IMS-230 method. A 0.25 g aliquot of the prepared pulp was digested in a 4-acid solution consisting of hydrochloric, nitric, perchloric and hydrofluoric acids. 4-acid is a near total digest and only the most highly resistant minerals are not dissolved. The resulting solution was analyzed via ICP-MS and ICP-ES for 48 elements and was corrected for inter-element spectral interferences. Lower detection limits for this procedure are 0.01 ppm for silver, 0.5 ppm for lead, 2 ppm for zinc, and 0.2 ppm for copper. Mercury is not reported due to volatilization in reaction with hydrofluoric acid and gold is not reported due to the small, 0.25 g aliquot size being insufficient to overcome the nugget effect. Samples with initial results beyond the upper detection limit of the IMS-230 method were analyzed by procedures ICF-6Ag, ICF-6Cu, ICF-6Pb and ICF-6Zn. The thresholds are 100 ppm for silver, and >1% for copper, lead and zinc. A 50 g split from the crushed and pulverized samples are composited into larger 500 g composite samples (consisting of ten continuous samples) and analyzed for gold utilizing CPA-Au1 photon assay method. Certain material gold results from the composite samples are then selected for re-analysis, by individual sample, as a 30 g fire assay (FAS-111 Method). Gold assays below detection limit are treated as zero values for composite calculations. MSA Labs employs internal quality control standards, duplicates and blank samples at set frequencies. Blind certified reference materials (CRMs) and blank samples were systematically inserted by the Company into the sample stream and analyzed as part of the Company's quality assurance/quality control protocol.