Rio Grande Resources Ltd. ($RGR) has engaged Precision GeoSurveys Inc. to conduct a high-resolution airborne magnetic survey over approximately 19.2 square kilometers, covering 100% of the claim blocks at the Winston Gold-Silver Project, situated in the Black Range Mountains of Sierra County, New Mexico.
This survey follows the company's recent high-grade surface sampling results, which highlighted gold values reaching up to 41.2 g/t Au and silver values up to 1,435 g/t Ag. The findings confirmed a structurally controlled mineralized corridor of approximately 2.0 kilometers running north-south across the property.
Survey Details
The airborne magnetic survey is scheduled to begin in late February 2026, depending on weather conditions. It will be conducted with a 50-meter line spacing, ensuring data quality control through wider tie lines. Key survey parameters include:
- High-resolution airborne magnetic data acquisition
- Coverage of the entire Winston claim block
Jason Barnard, President and CEO of Rio Grande Resources, stated, "The recent high-grade results demonstrated that Winston hosts multiple mineralized structural zones over a 2-kilometer corridor. Engaging Precision represents another important step in unlocking the potential scale of Winston. Airborne geophysics is a powerful tool for mapping structures beneath surface cover, and the data should help us better define the fault architecture across the property and refine priority targets."
Rio Grande is enhancing its exploration model and prioritizing follow-up work, as several mineralized zones have been confirmed across both historically developed sites and previously unsampled areas. The airborne magnetic data is expected to delineate broader structural corridors that influence mineralization, identify branching splays, and evaluate potential intrusive features. This comprehensive approach aims to focus future ground validation and drill planning on the most compelling targets.
Understanding the Mineralization
The Winston project is interpreted to host a low-sulfidation epithermal system, particularly along the Paymaster Fault corridor and its subsidiary splays. Recent high-grade assays confirmed mineralization across various structural trends, indicating a broader mineralized footprint than previously recognized. High-grade shoots typically localize at fault intersections and areas of structural complexity, enhancing the company's exploration strategy.
Upon completion of the magnetic survey, the data will help generate a prioritized list of structurally coherent targets that align with high-grade surface mineralization, demonstrating structural continuity along the 2 km corridor and favorable geometry for drill testing.
The results will be integrated with the company's existing datasets to refine its exploration model. Following this interpretation phase, Rio Grande intends to conduct targeted ground validation and detailed structural mapping where necessary, ensuring a focused approach prior to future drill testing. Updates will be shared as new results are interpreted.
For more information on Rio Grande Resources, visit www.riogranderesources.ca and explore their fact sheet and corporate presentation.