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Highlights
- Resolution Minerals has planned a fully permitted drilling program covering up to 13,700 metres across as many as 45 diamond drill holes at Golden Gate.
- The campaign is designed to define the scale of mineralisation and support progress toward a maiden Mineral Resource Estimate targeted for early 2027.
- Previous drilling in 2025 intersected gold mineralisation in every hole, with zones remaining open at depth.
- Phase 2 drilling program is scheduled to begin in May 2026.
- The company will deploy two MP1500 Core diamond drill rigs.
Resolution Minerals Ltd (ASX:RML) has announced plans to commence a large-scale Phase 2 drilling program at its Horse Heaven Gold-Antimony-Tungsten-Silver Project in Idaho, United States. The campaign will target the Golden Gate fault zone, aiming to define the geometry and scale of gold mineralisation and advance toward a maiden Mineral Resource Estimate (MRE) in early 2027. The program will also focus on tungsten mineralisation.
This program builds on the company’s 2025 drilling campaign, during which all completed holes intersected gold mineralisation that remains open at depth.
Expansion of Drilling Activities
In the upcoming Phase 2 program, the company plans diamond core drilling of up to 45,000 feet (13,700m) across nearly 45 holes, building on a 10,100-foot phase 1 program completed in 2025. The phase 1 included 14 drill holes, all of which intersected gold mineralisation from surface levels and continued at depth. Significant results included-
- 253m @ 1.5 g/t gold (HH-GG25-003C);
- 5m @ 1.26 g/t gold (HH-GG25-001C);
- 2m @ 0.6 g/t gold (HH-GG25-002C); and
- 8m @ 0.64 g/t gold (HH-GG25-004C).
Drilling under the Phase 2 is scheduled to commence in early May 2026, supported by favourable weather conditions, and is expected to run through mid-August 2026. Two MP1500 diamond drill rigs will be deployed, with no RC drilling included in the current plan.
Focus on Golden Gate North and South
The drilling campaign will target both Golden Gate North and Golden Gate South, with approximately 60% of drilling allocated to the southern area. At Golden Gate North, the program will include infill and step-out drilling aimed at expanding known zones of mineralisation and testing extensions.
Previous results from this area include wide gold intercepts, such as 189.2 metres at 1.30 g/t gold, along with higher-grade intervals within the broader zones. In addition to gold, tungsten mineralisation has also been identified, suggesting the presence of multiple commodities within the system.
At Golden Gate South, exploration will target an emerging discovery area. Earlier drilling identified broad gold zones beginning at surface and extending to the end of drilled sections.
The 45 diamond holes drilling program will aim at defining strike extensions and depth extensions of the system.
Next Steps and Project Development
The company is progressing preparations for the 2026 field season, with drilling at the Golden Gate target scheduled to commence in the beginning of May 2026. Planned activities include diamond drilling across both target areas, step-out drilling, and deeper drilling. Sampling, geological logging, and assay analysis will continue.
In parallel, a new Plan of Operations to expand drilling across the Golden Gate Fault Zone is advancing. A separate plan is also being developed for the Antimony Ridge target. Metallurgical test work will continue, aligned with project milestones and exploration progress.
The Phase 2 drilling program at the Horse Heaven Project signals a continuation of exploration efforts at the Golden Gate system. With expanded drilling coverage and a focus on both northern and southern zones, the campaign is expected to deliver additional geological data and refine understanding of mineralisation across the project. Outcomes from this program will play a role in advancing the project toward its initial resource estimate timeline.
RML shares were trading at AUD 0.049 per share at the time of writing on 18 March 2026.
