Category: Exploration and Development

GR Silver Mining Ltd. reports high-grade silver results from Phase I underground sampling at Plomosas Mine, Mexico, with up to 3,993 g/t Ag Eq. The program aims to model high-grade zones, collect metallurgical data, and support a Bulk Sampling Test Mining program. Phase II will refine engineering plans, leveraging existing permits and infrastructure for potential 2026 implementation.

IMPACT Silver Corp. announced new drill results from the Juarez Zone at its Plomosas zinc-lead-silver mine in Mexico, with high-grade intersections including 30.10% zinc, 7.88% lead, and 61.8 g/t silver. The mineralization, outside existing JORC resources, is near underground infrastructure, enabling rapid mining expansion. Drilling continues to expand resources, leveraging the mine’s high-grade potential.

Luca Mining Corp. announced high-grade results from its 2025 drilling program at the Campo Morado mine, Mexico. Surface drillhole CM-RF-25-001 at Reforma Deposit hit 15.1m of 11.9 g/t AuEq, while underground drillhole CMUG-25-015 yielded 4.5m of 12.2 g/t AuEq. The 7,500m Phase 1 program targets resource expansion, with 22 underground and 5 surface holes completed, aiming to update mineral resources and mine plans.

Riverside Resources and Questcorp Mining are preparing for the first-ever drill program at the Union Gold-Silver Project in Sonora, Mexico, targeting high-priority Carbonate Replacement Deposit (CRD) zones. The 1,500-meter diamond drilling will test Union, North Union, and Famosa zones, which historically produced 50,000 ounces of gold equivalent. Recent geophysical surveys, including IP and drone magnetics, along with surface geochemistry, have refined drill targets, showing significant potential for gold and base metal discoveries.

Questcorp Mining Inc. is advancing surface exploration at the La Union Gold-Silver Project in Sonora, Mexico, to prepare for a 1,500-meter maiden drill program. Operator Riverside Resources completed geophysical surveys and mapping to refine drill targets. The 2,520-ha carbonate replacement deposit shows high-grade gold, silver, and base metals, with potential for significant discoveries.

Mithril Silver and Gold Limited has defined an 8km-long, 1,200m-deep high-grade gold-silver system at its Copalquin Project in Mexico. Drilling starts this month at Target 5, with Target 3 set for late Q3 2025. New sampling extended Target 2 by 1,000m. High-grade results from Targets 2, 3, 4, and 5 highlight significant discovery potential.

Tocvan Ventures Corp. reported RC drill results from Gran Pilar’s South Block, Sonora, Mexico, highlighting 42.7 meters of 41 g/t silver and 0.14 g/t gold in JES-25-120, including 4.6 meters of 180 g/t silver. All holes showed gold mineralization, with 21% exceeding 25 gram-meters. The results suggest a robust epithermal system, with plans for further drilling and permitting.

Heliostar Metals Ltd. reported successful drilling at the Truckshop stockpile at La Colorada Mine, Sonora, Mexico, with highlights including 10.7m at 1.81 g/t gold and 19.8m at 0.62 g/t gold. The results support the company’s strategy to maximize cash flow from low-cost stockpiles before expanding the Veta Madre and Creston pits. Next, drilling will target the El Dorado stockpile.

Questcorp Mining Inc. (CSE: QQQ) has launched the first phase of its work program at the La Union CRD project in Sonora, Mexico, targeting a 100% interest from Riverside Resources Inc. The program includes IP surveying, geological mapping, and sampling to optimize drill targets for a 1,500-meter drill program in Q3 2025, focusing on high-grade polymetallic mineralization.

President Sheinbaum explained why the open-pit mining ban proposed by former President Andrés Manuel López Obrador was withdrawn and announced she will continue the moratorium on new mining concessions. Permits for existing mines will be under environmental review, especially open-pit operations. Permits currently being granted address tailings and operational issues, not new projects.