Red Mountain Mining (ASX: RMX) is poised to restart exploration at its US antimony projects following the end of the northern hemisphere winter.
Systematic surface geological mapping and sampling will commence this month at the Thompson Falls project, which previously returned rock chip results of up to 36.5% antimony and 1.12 parts per million gold.
Prior to the winter break, the company submitted a collection of rock samples from the area for analysis, 16 of which were taken from the historical Eastern Star mine.
The samples all showed elevated to high-grade antimony ranging up to 36.5% and all contained detectable gold, with values from 0.04ppm to 1.12ppm.
Red Mountain will complete further work at Eastern Star to determine the source, nature, and orientation of the quartz-siderite-stibnite vein material from the mine’s waste dump.
The company said the probable mineralised vein system had “clear potential” to become a priority drill target once located, and plans to investigate and sample other historical workings within a framework of systematic mapping and sampling across the full claims area.
Technical Expert Appointed
Red Mountain has recently engaged KC Harvey Environmental (KCH) to provide technical expertise in support of its US portfolio.
KCH has an extensive background in mineral exploration and mining operations and approvals across Montana, Idaho and Utah, where Red Mountain’s projects are located.
It will provide geological field crews for the 2026 exploration program and leverage its experience of US regulatory regimes to negotiate required approvals, as well as provide guidance on initial geological mapping and surface sampling at Red Mountain’s Yellow Pine and Silver Dollar projects in Idaho.
Red Mountain plans to collect high-resolution drone magnetic data across the Utah antimony project and is currently in discussions with potential service providers.
Once the location of prospective structural corridors is understood, the company will seek to generate drill targets using electrical techniques such as controlled-source audio-frequency magnetotellurics (CSAMT).
CSAMT has previously been used to target deep mineralisation at the Antimony Canyon project owned by American Tungsten & Antimony (ASX: AT4).
New Advisory Board Member
Red Mountain has also appointed exploration geologist Dr Max Baker to the role of advisory board member.
Dr Baker has over 40 years’ experience in technical and executive roles ranging from grass roots through to resource definition and development for projects across Australia, the Americas, Europe, and Asia.
He was co-founder and former vice president of exploration for Integra Resources, growing the DeLamar and Florida Mountain projects from having no defined resource to several million ounces of gold that are now undergoing mining feasibility.
Dr Baker previously served as chief geologist for Newcrest Mining and Mount Isa Mines and has held senior management and technical advisory roles for several Canadian and Australian publicly-listed companies.
