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Highlights
- RML is accelerating its downstream antimony strategy to support U.S. critical mineral supply chains.
- Advanced metallurgical testwork is underway on high-grade samples from the Horse Heaven Project in Idaho.
- Tribeca Capital has been appointed to advise on RML’s U.S. expansion, offtake partnerships and planned Nasdaq listing.
- The company has completed the first draft of its Nasdaq Form F-20, targeting a 2026 listing.
- RML is exploring U.S. government funding programs to fast-track production timelines.
Resolution Minerals Ltd (ASX:RML; OTCQB:RLMLF) is advancing its downstream antimony development strategy in the United States as part of the nation’s broader push to secure domestic critical mineral supply chains. The company has commenced advanced metallurgical testwork on antimony ore from its Horse Heaven Gold-Antimony-Silver-Tungsten Project in Idaho and engaged Tribeca Capital as its adviser to support its U.S. expansion and upcoming Nasdaq listing.
Metallurgical Testwork to Define US Antimony Processing Flowsheet
Kingston Process Metallurgy (KPM) has been engaged to conduct detailed mineralogical, bench-scale concentration and analytical testwork on antimony samples sourced from the Horse Heaven Project.
The program aims to define the optimal processing and concentration pathway for guiding engineering design, bulk sampling and early-stage product specifications for the U.S. market.
Samples collected from trenches at Antimony Ridge, where rock chip grades reached 49.8% antimony (Sb), 1,420 g/t silver (Ag), and 3.12 g/t gold (Au), have been dispatched to KPM’s Ontario facility. The analytical work will include chemical assays, multi element analytical characterisation, mineralogical phase identification analysis, processing work and sample concentration. Mineralogical and analytical results are expected soon.
As the company advances its multi-stage testwork program, further results from subsequent flowsheet development studies and bench-scale concentration trials are expected.
Engagement with Tribeca Capital
Tribeca Capital has been engaged to assist the company with its U.S. critical minerals strategy. Tribeca will leverage its extensive investor, top-tier institutional and broker network to advance RML’s growth strategy.
The advisory role includes identifying new technologies, facilitating potential offtake agreements, and scouting new acquisition or partnership opportunities. Tribeca will also provide support in government engagement, corporate M&A opportunities, and adding highly skilled personnel to the team.
Additionally, Tribeca will be assisting RML’s planned Nasdaq listing, expected in early 2026. The company has already completed the first draft of its Form F-20 (Nasdaq prospectus) and engaged U.S. legal and advisory partners to facilitate the listing process.
Next Steps
RML is exploring non-dilutive U.S. government funding programs and FAST-41 permitting to fast-track production.
Key initiatives include-
- Exploring new commercial and strategic partnerships with key critical mineral developers across the region.
- Engaging with U.S. and Australian government bodies.
- Advancing metallurgical testing, flowsheet development, and process refinement to establish the foundation for antimony production.
- Continuing exploration at the Horse Heaven Project through additional drilling, sampling, and analysis programs.
- Assessing opportunities to expand the Horse Heaven project area and pursue further commercial and collaborative ventures.
RML shares were trading at AUD 0.092 per share at the time of writing on 22 October 2025.
