en.Wedoany.com Reported - GR Silver Mining Ltd. (TSXV: GRSL | OTCQX: GRSLF | Frankfurt: GPE) reported drilling results from the San Marcial area of the Plomosas project in Mexico, showing mineralization has extended at least 150 meters beyond the southeastern boundary of the 2023 National Instrument 43-101 mineral resource estimate. The strongest intercept in the southeastern extension target was a 21.9-meter true width interval starting at 191.5 meters downhole, grading 168 g/t silver and 1.41% zinc, including two high-grade sub-intervals: 6.15 meters true width (447 g/t silver, 0.85% zinc) and 4.15 meters true width (159 g/t silver, 5.8% zinc). The upper sub-interval occurs in chlorite-hematite-rich breccia at the contact between the Upper Oligocene volcanic sequence and the Lower Jurassic volcano-sedimentary sequence, while the lower sub-interval is hosted in hydrothermal breccia and stockwork systems within the Jurassic sequence. A second drill hole intersected 12.25 meters true width grading 57 g/t silver, including 2.05 meters true width (100 g/t silver, 0.39 g/t gold) and 1.45 meters true width (184 g/t silver).
Eric Zaunscherb, President and CEO of the company, stated that these results demonstrate the continued effectiveness of the 20,000-meter drilling program and enhance confidence in the exploration potential of the southeastern extension and parallel breccia zones. Other data include a dilation zone encountered in hole SMS26-04 in the southeastern area, with an estimated true width of 45.1 meters grading 1,623 g/t silver, including 8.25 meters true width grading 8,579 g/t silver.
Drilling at the parallel breccia target was conducted in newly identified mineralized structures near the MRE, with three holes intersecting multi-stage hydrothermal breccia, stockwork, and vein systems controlled by the intersection of northwest-southeast and northeast-southwest trending structures within the Lower Jurassic volcano-sedimentary sequence. Key results include 2.85 meters true width starting at 63.0 meters downhole (340 g/t silver, 0.32 g/t gold), including 1.75 meters true width (450 g/t silver, 0.37 g/t gold), and a separate interval (0.75 meters true width starting at 195.0 meters downhole, 5.34 g/t gold); another hole intersected 26.80 meters true width grading 6 g/t silver and 0.14 g/t gold. Stockwork mineralization in this area is characterized by continuous low-grade gold mineralization, differing from the chlorite-hematite hydrothermal breccia type that dominates the main resource zone.
GR Silver Mining Ltd. is a Canada-based exploration company focused on expanding its silver and gold resources in Mexico, holding a 100% interest in the Plomosas project. Located on the eastern edge of the Rosario mining district in Sinaloa State, the project encompasses the high-grade silver discovery in the San Marcial area and the historic Plomosas underground mine, covering an exploration area of 78 square kilometers. The company stated that results from the southeastern extension support the interpretation of a laterally extensive hydrothermal system, with mineralization occurring both in the upper contact zone and in the Lower Jurassic host rocks. Multi-stage hydrothermal breccia and stockwork zones record multiple brecciation and mineralization events, indicating repeated circulation and remobilization of silver and polymetallic mineralization by hydrothermal fluids from the Jurassic through the Cretaceous to the Oligocene.
The 20,000-meter step-out drilling program at San Marcial is ongoing, with assay results from seven additional holes pending. The program will continue targeting the southeastern extension and parallel breccia areas, with the goal of updating the mineral resource estimate and completing a preliminary economic assessment upon receipt of results.
