West Cobar Metals (ASX:WC1) expands Baxter Fluorspar Project targeting in Nevada
West Cobar Metals has reported the results of a satellite spectral study completed over the proposed Baxter Fluorspar Project in Nevada, USA, identifying extensive hydrothermal alteration extending well beyond the historical fluorite workings.
The study identified numerous previously unrecognised targets considered prospective for fluorite mineralisation along a 3 km mineralised corridor and supports the interpretation that the Baxter Project may represent the upper levels of a larger hydrothermal mineral system.
The announcement follows the company's recent binding agreement to acquire a 100% interest in the Baxter Fluorspar Project, subject to several conditions precedent, including a 30 day due diligence period.
Highlights
Satellite spectral analysis identified extensive hydrothermal alteration extending well beyond historical Baxter Project fluorspar mines.
Numerous previously unrecognised targets considered prospective for fluorite mineralisation were identified along a 3 km mineralised corridor.
Alteration patterns indicate Baxter may represent the upper levels of a larger hydrothermal mineral system.
Historical production from the Kaiser Mine was approximately 200,000 tonnes of fluorspar from underground mining between 1928 and 1957.
Historical production included premium acid grade concentrate grading 97% to 98% CaF₂.
Results support ongoing field mapping and sampling programs.
The Baxter Fluorspar Project is located in south west Nevada, about 150 km ESE of Reno, and comprises 51 contiguous Bureau of Land Management registered claims totalling approximately 4.3 km².
Historical mining was undertaken at the Kaiser and Spar Dome mines between 1928 and 1957 and produced approximately 200,000 tonnes of fluorspar from underground operations.
Historical records indicate production included premium acid grade fluorite concentrate grading above 97% to 98% CaF₂.
The acquisition provides West Cobar with strategic exposure to the fluorite and fluorochemical supply chain, which the company says is increasingly recognised as critical to western industrial, defence and energy transition markets.
The satellite spectral study identified extensive hydrothermal alteration extending over several square kilometres and well beyond the known fluorite workings.
The study identified a number of priority target areas characterised by clay alteration assemblages and gas related alteration that accompany fluorite mineralisation.
According to the announcement, these alteration assemblages are also consistent with those commonly associated with intrusive related hydrothermal systems, while fluorite veining may represent the upper expression of concealed intrusive systems hosting tin, tungsten and molybdenum mineralisation.
Historical mining at the Kaiser Mine occurred within structurally controlled fluorite bearing vein systems associated with faulting, silicification and brecciation.
Historical drilling and underground development over 680 m of strike suggests continuity of mineralisation along strike and at depth, supported by some historical drill holes, particularly to the south and west of the Kaiser Mine.
Apart from the Kaiser Mine, historical fluorite workings occur within a southwest trending 3 km by 1 km corridor along the principal fault direction, and the announcement also notes that the area around the Spar Dome Mine has not been drill tested.
Interpretation of Sentinel 2 data and publicly available aerial radiometric surveys indicates alteration extending well beyond historical workings, multiple Priority 1 untested fluorite targets, and an area of altered andesite that could cover untested mineralisation.
West Cobar Managing Director Matt Szwedzicki said,
"The satellite spectral study has enhanced our understanding of Baxter. Rather than simply confirming the historical fluorite mines, the work has identified a larger hydrothermal footprint containing previously unrecognised fluorite targets. This significantly expands the exploration opportunity beyond the historical mines and strengthens our view that Baxter may represent the upper levels of a larger mineral system."
Initial due diligence is currently being carried out, including more detailed technical review, compilation and digitisation of historical mine data, tenure, ground inspection and surface sampling.
Samples collected during the due diligence program will be analysed for CaF₂ grade, fluorine, major oxides, carbonate content and a comprehensive suite of pathfinder and deleterious elements to assess both product quality and exploration potential.
The next stage is expected to include mapping of geology, alteration and structure, systematic surface sampling, target ranking and drill targeting.
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