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Resolution Minerals (ASX:RML) has successfully produced 99.38% purity antimony trioxide from its Antimony Ridge project, thanks to conventional pyrometallurgical testing conducted by Kingston Process Metallurgy in Ontario.
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Disclaimer: This content has been prepared as part of a partnership with Resolution Minerals Ltd and is intended for informational purposes only.
Metallurgy tests are advancing on antimony-bearing stibnite veins, returning exceptionally high grades (consistently above 30% up to 50% recently).
Testing utilised large stibnite samples from several historical open pits at Resolution’s Antimony Ridge, which is part of the broader Horse Heaven antimony-tungsten-gold-silver project. The process involved the volatilisation of stibnite to produce a high-purity powder, Resolution told shareholders today.
According to the Australian-based company, pyrometallurgy can now serve as the base-case technology for the project; further refining test work is already underway in Ontario, with final results expected in coming weeks.
Dr Adam Roper, who’s been working as Resolution’s in-house senior metallurgist, said these returns were a “great start” to the company’s larger CY26 strategy.
“The initial pyrometallurgical results from processing Antimony Ridge samples are very encouraging, with few impurities… I’m looking forward to discussing the final results in the coming weeks,” Dr Roper said today.
“Resolution’s goal is to develop a processing hub in Idaho for stibnite, and I’m relishing the opportunity to bring this to fruition, from mine to product.”
Resolution managing director Ari Zaetz also weighed in by pointing out that every Ontario milestone hit is perfectly timed after the U.S. Government gave the company “FAST-41 Coverage” to accelerate permits.
“[The company is] developing further local processing plans to enable antimony and tungsten supply for U.S. demand,” he pledged. “Our unique combination of critimins assets makes us well placed to deliver.”
Recent 3D modelling of antimony and silver veins at Antimony Ridge revealed significant scale potential. The mineralisation spans a 1,000 metre by 700 metre area and boasts numerous vein swarms and stockworks.
RML has enjoyed a value pop today, and is up +11.4%.
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