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Expo VMS Zn-Pb-Au-Ag Drilled Prospect
246 claims ~5100 ha Finlayson Lake District |
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Regional stream sampling conducted by the Geological Survey of Canada in the 1980s revealed a large area of strongly anomalous zinc, silver, copper, barium, and lead in silts, 25 km south of Wolverine Lake in the Finlayson VMS district. Follow-up by Ron Berdahl led to his discovery of multiple new occurrences of bedded sulphides grading to 13.53 % zinc, with skarn outcrops grading to 17% combined lead-zinc. Samples from an exposure of bedded sulphides returned 10.8% zinc, 0.3% copper and 325 g/t silver. |
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Cominco Ltd. optioned the Expo property from Berdahl in the mid 1990s. Limited drilling intersected bedded Zn-Cu-Ag-Ba mineralization and favorable stratigraphy for VMS mineralization. Cominco’s final word before dropping the option was that Expo remained a significant VHMS target, recommending further drilling and additional exploration on the property. In 2005, 18526 Yukon Inc. discovered a large multi-element anomaly in soils, with zinc values up to 5497 ppm (0.55%) and gold values to 576 ppb (0.576 grams/tonne) over an ~800 x 300 m area. No geological follow-up has been done on this anomaly, and the mineralization observed across the property remains poorly understood. |
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Expo is underlain by the “middle unit” of the Yukon Tanana Terrane, a sequence of Late Proterozoic to Paleozoic felsic metavolcanics, carbonaceous phyllites and schists with interbanded mafic metavolcanics that also hosts the Wolverine (3.75 Mt @ 12.5% Zn, 1.4% Pb, 1.4% Cu, 336.6 g/t Ag, 1.6 g/t Au – currently gearing towards full production with Yukon Zinc Corp.), Kudz Ze Kayah (11.3 Mt @ 5.9% Zn, 1.5% Pb, 0.9% Cu, 1.37 g/t Au, 1.3 g/t Au) and Ice (4.5 Mt @ 1.48% Cu) deposits in the Finlayson Lake District. Showings on the Expo property bear mineralogical similarities both to Wolverine and to KZK, though the pronounced geochemical signature at Expo suggests a much larger system may be at play. |
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The Expo claim block lies within 20 km of the Wolverine Mine access route, within 25 km of Yukon Zinc Corp.’s mill, and within 30 km of the Robert Campbell Highway. |
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