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File Created: 08-Nov-2018 by Karl A. Flower (KAF)
Last Edit:  07-Dec-2018 by Karl A. Flower (KAF)

Summary Help Help

NMI
Name MICA, BIGMOUTH Mining Division Revelstoke
BCGS Map 082M078
Status Showing NTS Map 082M09W, 082M16W
Latitude 051º 44' 31'' UTM 11 (NAD 83)
Longitude 118º 26' 20'' Northing 5733317
Easting 400655
Commodities Silver, Lead, Gold Deposit Types I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt Omineca Terrane Kootenay
Capsule Geology

The Mica (Bigmouth) occurrence is described as being located in the headwaters of the west fork of Big Fish Creek, 3 kilometres north of Groundhog Basin.

The area is underlain by metasedimentary rocks interlayered with mafic volcanic rocks of the Cambrian to Devonian Index Formation (Lardeau Group). The metasediments consist of quartzites, schists, phyllites, calcareous schists, carbonates and fine clastic rocks. The metavolcanics are tholeiitic flows and mafic tuffs metamorphosed to greenstone and chloritic phyllite.

Locally, a lensoidal, 1 by 30 metre, vuggy, quartz-pyrite vein hosts coarse galena with minor sphalerite and chalcopyrite. The vein is hosted by a spotted quartz-biotite pelite and greenish quartzite sequence and is oriented parallel to layering and foliation.

In 1982, grab samples of the vein assayed up to 2.52 per cent lead, 71.8 grams per tonne silver and 0.4 gram per tonne gold (Property File - G. Gibson [1983-05-01]: Final Report on the Wood River Project - 1982).

In 1982, E & B Explorations prospected the area as the Mica claims.

Bibliography
EMPR FIELDWORK 2000, pp. 231-252
EMPR MAP 25
EMPR OF 1991-17, 1999-3
EMPR PF (*G. Gibson [1983-05-01]: Final Report on the Wood River Project - 1982)
GSC MAP 12-1964; 237A
GSC OF 637
GSC P 64-32, p. 33

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