Speciality Metals is re-assaying historical drill core in work towards a potential underground mine at Mount Carbine.
And it has started talks with he Department of Natural Resources, Mines and Energy and contractors setting out detailed planning for reopening the decline at the site for further underground testing.
A total of 154 intercepts from 43 historic drill holes outline veining extending for 1.2km, with five main veins identified.
“These latest results have expanded our understanding of an economically viable underground project at Mount Carbine,” Speciality Metals chief executive officer and senior technical advisor Kevin MacNeill said.
“What has always been of interest was the historical miner’s ability to produce significant quantities of tungsten by mining these high-grade veins.
“The veins have now been traced through the deposit within the Dyke West extension and provide us with an alternative mining concept currently under review.
“The mining of such high-grade veins, in combination with the already existing processing infrastructure, has the potential to make Speciality Metals a world-class and low-cost tungsten producer.”
Assay results include 2m at 7.7 per cent WO3 from 162.01m, 11.2m at 2.9 per cent WO3 from 127.86m, 6.18m at 1.4 per cent WO3 from 244.86m, and 13.58m at 0.57 per cent WO3 from 213.93m.
The company is evaluating the underground development potential for a narrow high-grade mine to extract ‘King-Vein’ style
mineralisation which is defined using a minimum mining width and grade of 2m grading above 0.2 per cent WO3.
It says this allows for less dilution than the sub-level caving methodology proposed by historical owners in 1985 for which a 430m decline was constructed at the time.
Upon relogging the historical core and the assaying of certain sections for reinterpretation, it ha been revealed that most of the mineralisation was contained in these high-grade veins, leading to the potential of a much higher grade resource enclosed in less tonnage.