Rio Grande Resources Extends High-Grade Gold-Silver Mineralization at New Mexico’s Winston Project

Rio Grande Resources Ltd ( (TSE:RGR) ) has issued an announcement.

Rio Grande Resources reported high-grade assay results from a December 2025 surface sampling program at its Winston Project in New Mexico, including gold grades up to 41.2 g/t and silver grades up to 1,435 g/t from a newly identified Poverty Creek Trend. The campaign, which collected 72 samples across veins, outcrops, and historic workings, confirms multiple structurally controlled mineralized zones and extends known mineralization beyond historic mines.

The company now interprets a continuous north–south mineralized corridor of about 2 km in strike length, linking past-producing mines with the newly sampled Poverty Creek area. Additional channel sampling in the northwestern claim block suggests another mineralized corridor open for further evaluation, reinforcing the view that Winston hosts a district-scale hydrothermal system organized along the Paymaster Fault and associated splays.

More about Rio Grande Resources Ltd

Rio Grande Resources Ltd. is a mineral exploration company focused on gold and silver projects, with its flagship Winston Gold–Silver Project located in the Black Range Mountains of Sierra County, New Mexico. The company targets structurally controlled, high-grade precious metal systems and is working to define district-scale potential across its Winston claim block.

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