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File Created: 23-Oct-1986 by Larry Jones (LDJ)
Last Edit:  12-Aug-1989 by Laura L. Duffett (LLD)

Summary Help Help

NMI
Name FOX 3, SEVEN SISTERS PEAK Mining Division Omineca
BCGS Map 103I099
Status Showing NTS Map 103I16E
Latitude 054º 59' 04'' UTM 09 (NAD 83)
Longitude 128º 14' 06'' Northing 6093328
Easting 548954
Commodities Molybdenum, Copper, Silver Deposit Types L05 : Porphyry Mo (Low F- type)
I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt Intermontane Terrane Plutonic Rocks, Bowser Lake
Capsule Geology

Upper Jurassic to Lower Cretaceous Bowser Lake Group sediments are intruded by the Early Tertiary age Seven Sisters stock which forms the core of the Seven Sisters Peaks. The sediments are mainly siltstone and greywacke with minor conglomerate, greenstone and rhyolite. Near the stock, they are sharply crenulated and deformed. The stock is largely granodiorite with lesser granite and diorite. Quartz feldspar porphyry is gradational with the intrusive and forms dykes cutting the sediments. Aplitic dykes extend from the intrusive into the sediments.

Molybdenite occurs in fractures within granodiorite in contact with siltstones. A sample assayed 1.46 per cent molyb- denum and another, 300 metres west, assayed 0.26 per cent molybdenum. Three hundred metres to the east, a five metre wide gossan with malachite and azurite occurs along a fracture in the granodiorite. A sample of this assayed 0.097 per cent molybdenum, 1.26 per cent copper, and 24.7 grams per tonne silver (Assessment Report 9147).

Bibliography
EMPR ASS RPT 8467, *9147
EMPR EXPL 1979-256; 1980-400,401
EMPR MAP 8; 69-1
GSC MAP 11-1956; 278A; 1136A; 1385A
GSC MEM 329

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