Drilling by Fortune Minerals (FORM-C) has expanded known mineralization at the Nico property, 170 km northwest of Yellowknife, N.W.T.
The new drilling, in the south-central part of the property’s Bowl zone, investigated a cobalt-bismuth subzone where 31.8 million tonnes grading 0.12% bismuth and 0.11% cobalt had been outlined previously.
Each of the six drill holes reported by Fortune intersected multiple zones of mineralization over core lengths of 3 to 52 metres. Cobalt grades were typically in the 0.1-to-0.2% range, with bismuth, copper and tungsten credits. Some of the zones also had significant gold grades, ranging between 0.1 and 1.6 grams per tonne.
The 52-metre intersection, in hole 97-54, graded 0.18% cobalt, 0.29% bismuth, 0.03% copper and 0.04% tungsten oxide, and included two higher-grade intervals, each of which measured about 15 metres long.
The entire Bowl zone has a resource of 69.9 million tonnes grading 0.07% bismuth, 0.07% cobalt, 0.07% copper and 0.03% tungsten oxide, as well as 0.53 gram gold per tonne.
Metallurgical testing indicates that good recoveries are achievable both by flotation and hydrometallurgical processes; the tests also show that there is potential to float a bismuth concentrate with a recovery rate of 67%.
Further drilling is under way, and metallurgical testing continues.
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