Resolution Minerals Limited (ASX: RML; OTCQB: RLMLF) (“Resolution” or the “Company”) has kicked off a district-scale stream sediment sampling program at its 100%-owned Horse Heaven Antimony-Gold-Silver-Tungsten Project in Idaho, USA.
Horse Heaven Antimony-Gold-Silver-Tungsten Exploration
This marks the first modern systematic stream sediment survey across the district, designed to generate new exploration targets and validate the project’s geological connection with Perpetua Resources’ Stibnite Gold Project.
Scope of the Sampling Program
- Coverage area: 59 km²
- Streams sampled: 44 km
- Samples planned: ~100
Location Plan of the Horse Heaven Project [ResolutionMinerals]
Sampling will be focused on catchments draining prospective geological structures, particularly those outside the known mineralised areas of Golden Gate and Antimony Ridge.
The objective is to detect pathfinder element halos associated with antimony, tungsten, gold and silver, using modern analytical methods. Results will guide subsequent soil grid sampling, geophysical work and drill targeting across underexplored parts of the project.
CEO Commentary
Craig Lindsay, Resolution’s CEO of U.S. Operations, stated:
“In parallel to our ongoing drilling program at Golden Gate and the soils and rock chip sampling at Golden Gate, Vibika Creek and Antimony Ridge, Resolution is taking an aggressive approach to identifying drill targets across Horse Heaven through this comprehensive stream sediment sampling program. A similar program has been used successfully at the neighbouring Stibnite Gold Project, and we expect this work will lead to an even larger portfolio of high-value exploration targets.
I believe Horse Heaven has the scale to be a district play and is one of the most target-rich projects I have ever been associated with. It’s very exciting to have a project that comprises past production, historical resources and significant district-scale exploration potential with exposure to critical metals, including antimony, tungsten, silver and gold.”
Geological Significance
Horse Heaven sits adjacent to the Stibnite district, separated by a buried intrusion. Resolution geologists believe this intrusion could be a key driver of mineralisation in the area.
Project plan showing the geology of the Horse Head Project area [ResolutionMinerals]
The program seeks to confirm the Intrusion-Related Gold System (IRGS) model linking Horse Heaven with Stibnite.
- Horse Heaven lies on the western side of the IRGS system.
- Stibnite lies on the eastern side.
The model suggests both systems may be geologically connected, potentially making Horse Heaven part of a much larger mineralised district.
Stibnite Boost for Horse Heaven
Perpetua’s adjacent Stibnite Gold Project has full federal approval, marked by visits from U.S. and Idaho leaders on 19 Sept 2025. For Resolution, this creates district-wide uplift, shared infrastructure, critical mineral focus (antimony, tungsten, silver, gold), and visibility as the natural “next cab off the rank.”
Industry Context
Antimony Market Forecast [Straits Research]
The U.S. remains 100% import-reliant on antimony, a critical mineral essential for munitions and energy storage. With Stibnite’s restart, the U.S. is set to reclaim a domestic supply source, reducing reliance on China and Russia.
By targeting antimony, tungsten, silver, and gold, Resolution is positioning Horse Heaven squarely within U.S. strategic priorities on national security, energy transition, and supply chain resilience.
Investor Outlook
Resolution Minerals’ Horse Heaven project is increasingly attracting attention due to its strategic location, strong exploration results, and proximity to federally backed Stibnite.
- Prime Location: Horse Heaven sits next to a high-profile project that has gained top-level U.S. Government support, positioning Resolution as the next major project in the district.
- Aligned Resources: The site hosts critical and precious minerals: antimony, tungsten, silver, and gold, matching U.S. priorities in national security, energy transition, and domestic supply chain strength.
- High Visibility: Investor attention and U.S. Government focus on the district increase the spotlight on Resolution’s project, highlighting the scarcity of high-quality North American critical mineral assets.
- Shareholder Focus: Resolution aims to deliver value by advancing Horse Heaven as part of a growing North American critical minerals hub vital for U.S. national security.
Market Implications
As of September 22, 2025, Resolution Minerals is trading at:
- Share Price: $0.050 AUD
- 52-Week Range: $0.007 – $0.093 AUD
- Market Capitalization: Approximately $64.56 million AUD
Next Steps
The stream sediment program is expected to:
- Deliver a comprehensive geochemical dataset across 59 km² of underexplored ground.
- Define anomalous catchments for soil grids and detailed mapping.
- Generate multiple new drill targets to complement ongoing work at Golden Gate, Vibika Creek and Antimony Ridge.
- Advance Horse Heaven towards recognition as a district-scale critical minerals project.
Resolution’s Horse Heaven Project, next to federally backed Stibnite and rich in antimony, tungsten, silver, and gold, is well positioned to leverage infrastructure, investment, and government attention, creating a clear path to become a key North American critical minerals supplier.
