The highway-accessible Hidden Lake property sits about 40 kilometres east of Yellowknife.
Further metallurgical tests for 92 Resources’ (TSXV:NTY) Hidden Lake hardrock lithium project brought “very encouraging results,” the company reported December 5. Heavy liquid separation and bench scale flotation work produced a concentrate with high grades of 6.2% to 6.5% Li2O, with recovery ranging from an impressive 82% to 85% for pegmatite from the Northwest Territories property.
The tests were conducted on material screened above 0.85 mm, but indicated the rest of the material would “respond well to flotation, and that a high overall recovery with a combined concentrate grade above 6% Li2O is achievable” using dense media separation and flotation.
“The metallurgical program has advanced significantly further than we had initially anticipated at this stage,” said president/CEO Adrian Lamoureux. “We have now demonstrated the spodumene has low iron, is coarse-grained and well-liberated, and responds strongly to cost-effective beneficiation techniques to produce high-grade concentrate at high recoveries.”
Tests reported in September showed concentrates had lithium extraction rates up to 97%, he added. “We look forward to completing the remaining Phase II [dense media separation] work and evaluating the next steps in flowsheet development.”
92 Resources filed a 43-101 technical report on the project in January.
The company also holds the Pontax lithium property in Quebec’s James Bay region and the Golden frac sand project in eastern British Columbia.