Hidden Lake Lithium Project, Northwest Territories
The Hidden Lake lithium project is located approximately 45 km east-northeast from Yellowknife and can be reached by the all-weather Ingraham Trail Highway (Highway 4), and/or by charter helicopter or float plane.Hidden Lake hosts lithium-bearing pegmatite dykes that are part of the larger Yellowknife Pegmatite District which have been described as the largest lithium resource in Canada with a minimum of 55,000,000 US tons at 1.41% L2O primarily as spodumene. The project consists of four claims with an aggregate area of 1,849 hectares. Extensive channel sampling and assays by previous workers documented significant lithium mineralisation over substantial intervals for each of the four surveyed dykes, including a maximum value of 1.75% Li2O over 6.01 metres. The dykes have exposed strike lengths of up to 800 m and up to 20 m in width at surface but are concealed by overburden cover.
Light green to whitish spodumene hosted in pegmatite was intersected in each of ten drill holes and varied from 2.65 m to 11.12 m in width. Additional minerals include potash feldspar, albite, quartz, lesser muscovite and rare tourmaline. Host rocks to the pegmatites are quartz-biotite-cordierite aluminous metasedimentary rocks. Assay results from drill core confirm high-grade lithium mineralization is present with Li2O values varying from 1.0-2.0% over intervals up to 9.2 metres. The high-grade nature of these spodumene-mineralised pegmatites coupled with the demonstrated favorable metallurgical characteristics demonstrated by previous operators makes these drill results significant. Future exploration will focus on drilling the high grade dykes beneath the initial holes to determine the shape of the dykes and to provide estimates of grade and tonnage.
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