PerpetuaResources has been awarded two funding grants to study the domestic production of military-grade antimony trisulfide from its Idaho gold stibnite project. Miningnews
Perpetua Resources has been awarded two funding grants from the US Department of Defense Defense Logistics Agency to study the domestic production of military-grade antimony trisulfide, an essential component in ammunition and dozens of other defense materials.
“Antimony from the Stibnite Gold project site served our national defense needs during World War II and Perpetua is confident we can be part of the solution again,” Perpetua Resources CEO Laurel Sayer said in a media statement. The first program will test existing samples of antimony trisulfide ore from the project for development into antimony trisulfide to Mil-Spec. The second program will study alternative processing opportunities to develop Mil-Spec antimony trisulfide from high purity antimony metal.
Antimony trisulfide is produced from high purity antimony ore feedstock and is used in small and medium caliber munitions, mortars, artillery, mines, flares, grenades, shoulder launched munitions and missiles. Currently, China, Russia, and Tajikistan control approximately 90% of the world’s antimony supply and the United States has no domestically mined source of the critical mineral.
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