189m at 1.3 g/t Gold: Resolution Minerals’ Maiden Hole Sparks Excitement

A Breakthrough at Golden Gate

Resolution Minerals Ltd (ASX, RML) has delivered a compelling early success at its Horse Heaven Project in Idaho, USA, with its maiden drill hole at the Golden Gate Prospect intersecting an impressive 189.2 metres grading 1.3 grams per tonne gold starting just 34 metres below surface. This broad, near-surface mineralised interval not only ends in mineralisation but also features multiple higher-grade zones, including standout sections of 12.9m at 2.32 g/t and 70.8m at 2.24 g/t gold.

The significance of this discovery lies in its geological context. The mineralisation aligns with an intrusion-related gold system (IRGS) model, a style known to host some of the largest gold deposits globally. Notably, the Golden Gate Prospect shares many geological and structural similarities with the Stibnite Gold Project, located only six kilometres away, which is a well-known intrusive-hosted gold deposit.

Implications for a District-Scale Gold System

The discovery hole HH-GG25-001C is the first to test unoxidised mineralisation at Horse Heaven, revealing pervasive gold mineralisation hosted in altered granodiorite and monzonite rocks associated with sulphide minerals such as pyrite and arsenopyrite. The mineralisation begins close to surface and remains open to the north, south, and at depth, suggesting the potential for a large, shear zone-hosted gold deposit that could extend well beyond the initial drill area.

Resolution’s CEO of US Operations, Craig Lindsay, highlighted the excitement around confirming a large intrusive-related gold system so early in the drilling campaign. With nine additional holes drilled at Golden Gate and results pending, the company is optimistic about the broader district-scale potential of the project.

Broader Multi-Commodity Potential and Next Steps

Beyond gold, the Horse Heaven Project also shows promise for antimony, tungsten, and silver. Early shallow drilling at the Antimony Ridge target has identified multiple stibnite veins, with assays forthcoming. Environmental studies are underway to support permitting for an extensive maiden drill program at Antimony Ridge, reflecting the company’s strategic alignment with US government priorities to secure domestic critical minerals supply chains.

Resolution has completed its Phase 1 drilling campaign at Golden Gate, comprising 10 diamond core holes totaling 2,770.6 metres. Assay results from the remaining holes are expected over the coming months, with the company already applying for a large follow-up drill permit to expand on the promising initial results.

Geological Expertise and Rigorous Reporting

The exploration results have been independently reviewed by experienced geologists, including Ross Brown of Riviere Minerals Pty Ltd, ensuring the data’s integrity and adherence to industry standards. The company has also provided detailed geological logging, sampling, and assay methodologies, underscoring a commitment to transparent and balanced reporting.

While the true widths of the mineralised zones are yet to be confirmed due to limited drilling orientation data, the initial intercepts are encouraging and warrant further investigation. The company’s methodical approach to exploration and permitting suggests a well-planned path forward to unlock the full potential of the Horse Heaven district.