Rio Grande Resources is set to conduct a high-resolution airborne magnetic survey at its Winston Gold-Silver Project in New Mexico, US.
The survey will cover approximately 19.2km², encompassing the entirety of the project in the Black Range Mountains of Sierra County.
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This phase of work follows recent high-grade surface sampling results by the company, which identified gold values reaching 41.2 grams per tonne (g/t) and silver values of up to 1,435g/t.
The findings confirmed a structurally controlled mineralised corridor running approximately 2km in a north-south direction across the property.
Precision GeoSurveys has been commissioned to carry out the survey, which is expected to commence in late February 2026, contingent on weather and operational conditions.
The survey will be conducted using 50m line spacing across the claim block, with wider-spaced tie lines for data quality control.
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By GlobalDataIt is aimed at enhancing the structural interpretation and refining targets for exploration by identifying branching faults, structural complexities, lithological contacts and potential intrusive features.
The Winston project is believed to house a structurally controlled low-sulphidation epithermal system, centred around the Paymaster Fault corridor.
Rio Grande aims to use airborne magnetic data to better define mineralised zones confirmed through recent high-grade assays.
The company anticipates that integrating these findings with its existing mapping and sampling datasets will facilitate more focused future exploration efforts.
Upon completion of the survey, the magnetic data will undergo processing to create maps of total magnetic intensity and derivatives.
The results will be integrated with surface assay data and compared against historical workings and known high-grade zones.
This analysis aims to identify structural offsets, undiscovered branching faults and undrilled extensions within the area’s mineralised corridor.
The goal is to generate a list of priority targets for potential drilling. These targets should align with known high-grade mineralisation, demonstrate structural continuity along the corridor and exhibit favourable geological characteristics for further exploration.
Rio Grande plans to incorporate these insights into its broader exploration strategy and expects to conduct targeted ground validation and detailed mapping as required.
Rio Grande Resources president and CEO Jason Barnard said: “The recent high-grade results demonstrated that Winston hosts multiple mineralised structural zones over a 2km 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. Our focus is disciplined target refinement so that when we drill, we are testing the most technically compelling zones.”
