Early-stage metallurgical testing on samples from the Thierry copper-nickel deposit near Pickle Lake, Ont., have shown successful concentration in a conventional bulk flotation system.
Property owner Richview Resources (RVR-V) announced that tests at SGS Lakefield Research on material from Thierry produced a bulk concentration test recovered 95% of the copper and 71% of the nickel in a rougher concentrate. A full locked-cycle test on material grading 1.9% copper and 0.26% nickel, with trace platinum, palladium and gold recovered 90.6% of the copper and 45% to 55% of the precious metals.
Lakefield has recommended further testing including ultimate pilot-plant recovery.
The work is part of onoging assessment of the Thierry deposit, which produced copper and nickel between 1976 and 1982. Richview has started a preliminary economic study of the deposit, based on a February resource calculation that put the size of the resource at 4.6 million tonnes grading 1.8% copper and 0.2% nickel, using a 1.3%-copper cutoff grade.
Richview plans to dewater existing underground workings and has a surface exploration program under way. The company is assessing the Thierry deposit itself and three other zones, all large and low-grade: the K1, J and G zones.
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