ASX listed, Resolution Minerals Ltd has announced a major Phase 2 drilling program at its 100 % owned Horse Heaven Gold-Antimony-Tungsten-Silver Project in Idaho, USA, aimed at defining the scale of gold mineralisation at the Golden Gate system.
Horse Heaven Project location map, highlighting the location of the two current major antimony-gold-silver tungsten targets, the Golden Gate Target (where the Phase 1 Core Drilling Program was conducted) and the Antimony Ridge Target. Also highlighted is the fully-permitted Stibnite Gold Project, which is only 12 km due east of Horse Heaven. Note: Coordinates are UTM metres north and east metric system, not latitude/longitude. Image Credit: Resolution Minerals Ltd
The fully permitted program will comprise up to 45,000 feet (13,700 metres) of diamond drilling across up to 45 holes, representing a significant step-up from the Company’s successful 2025 campaign.
The drilling is designed to test both strike and depth extensions of mineralisation across Golden Gate North and South, and to support progression toward a maiden Mineral Resource Estimate targeted for Q1 2027, subject to successful outcomes.
Phase 1 drilling completed in 2025 returned gold mineralisation in all 14 holes, with results including:
• 253 m @ 1.5 g/t gold
• 197.5 m @ 1.26 g/t gold
• 265.2 m @ 0.6 g/t gold
• 240.8 m @ 0.64 g/t gold
All holes remain open at depth, highlighting the potential scale of the system.
RML’s CEO of US Operations, Craig Lindsay, commented:
“Following our impressive 2025 drill campaign, it is clear that Golden Gate hosts a large continuous gold mineralised system, with all holes intersecting mineralisation and remaining open at depth.
“The upcoming drill program is designed to define the size and shape of this system, and to advance Golden Gate toward a maiden JORC-compliant Mineral Resource Estimate.
“Importantly, mineralisation remains open in multiple directions, and we are only beginning to understand the full scale for the Golden Gate system.”
The Phase 2 program will utilise two MP1500 core diamond drill rigs, with drilling scheduled to commence in early May 2026 and continue through to mid-August.
In addition to gold, the program will target associated tungsten mineralisation, further supporting the project’s multi-commodity potential and strategic relevance amid tightening supply for both antimony and tungsten.
Drilling will focus on expanding mineralisation at both Golden Gate North and South. At Golden Gate North, step-out and infill drilling will target extensions of previously intersected broad gold zones, including 189.2 m @ 1.30 g/t gold from surface, which remains open at depth.
At Golden Gate South, drilling will follow up on a new discovery where near-surface mineralisation returned 99.1 m @ 0.38 g/t gold from surface to end of hole, expanding the system eastward and remaining open at depth.
The Company is also targeting a large coincident gold and tungsten soil anomaly west of recent drilling, representing a priority area for further testing.
Geological interpretation indicates that mineralisation is controlled by northeast-southwest fault structures within an intrusive-related gold system, with similarities to the nearby Stibnite Gold Mine.
Resolution expects the 2026 drilling program to deliver a steady flow of results, supporting ongoing geological interpretation and step-out drilling as the Company works to define the overall scale and continuity of the Golden Gate system.
The broader 2026 field program will include step-out drilling along strike, deeper drilling to test extensions at depth, and continued geological logging, sampling and metallurgical test work.
The Horse Heaven Project is located in Idaho, adjacent to the multi-billion dollar Stibnite Gold Project, one of the largest undeveloped gold deposits in the United States.