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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  12-Apr-2012 by George Owsiacki (GO)

Summary Help Help

NMI 103P6 Pb6
Name BASIN (L.3190), SILVER BOW, MCC Mining Division Skeena
BCGS Map 103P033
Status Prospect NTS Map 103P06W
Latitude 055º 23' 31'' UTM 09 (NAD 83)
Longitude 129º 28' 25'' Northing 6138510
Easting 470000
Commodities Silver, Gold, Lead, Zinc, Copper Deposit Types I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt Intermontane Terrane Stikine, Bowser Lake
Capsule Geology

The Basin showing is located about 10 kilometres due south of Alice Arm near the headwaters of the southwestern tributary of Lime Creek. It should be noted that the Basin claim (Lot 3190), on which the showing occurs, is not correctly located on claim sheet maps and National Topographic System maps. The area underwent limited exploration in 1916 and the mid 1960s for base and precious metals.

The region is underlain by Middle Jurassic to Upper Cretaceous Bowser Lake Group argillite, shale, siltstone, greywacke and conglomerate. These are intruded by Lower Tertiary granodiorite and diorite of the Coast Plutonic Complex. The sediments have been folded and contact metamorphosed to biotite hornfels.

The showing consists of a 0.20 to 0.76 metre wide quartz vein that strikes 040 degrees for 53 metres and dips 75 degrees east. The vein follows a shear zone, developed in sediments, near the granodiorite. Mineralization consists of masses and blebs of pyrrhotite which contain smaller blebs and disseminations of galena and sphalerite, all in a quartz gangue. A 0.61 metre chip sample taken across the south end of the vein assayed 6.17 grams per tonne gold, 620 grams per tonne silver, 0.8 per cent copper, 19.76 per cent lead and 6.0 per cent zinc (Minister of Mines Annual Report 1966, page 50).

Bibliography
EMPR AR 1916-68; 1964-24-30; *1966-50; 1968-65
EMPR ASS RPT 20570, 29106, *30177
EMPR BULL 63
EMPR FIELDWORK 1985, pp. 219-224; 1988, pp. 233-240; 1990, pp. 235-243; 2005, pp. 1-4
EMPR MAP 8
EMPR OF 1986-2; 1994-14
EMPR PF (Marshall Creek Copper Co. Ltd. Annual Report, 1965; *Geology Map by Marshall Creek, 1967)
EMR MP CORPFILE (Marshall Creek Copper Co. Ltd.)
GSC MAP 307A; 315A; 1385A
GSC MEM 175, p. 82
GSC OF 864; 3272

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