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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  07-May-2014 by Nicole Barlow (NB)

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Name TUFF, POKOSHA, HAWK 4, GEORGE Mining Division Vancouver
BCGS Map 092G094
Status Showing NTS Map 092G14W
Latitude 049º 55' 57'' UTM 10 (NAD 83)
Longitude 123º 23' 45'' Northing 5531201
Easting 471592
Commodities Gold Deposit Types I01 : Au-quartz veins
Tectonic Belt Coast Crystalline Terrane Plutonic Rocks, Gambier
Capsule Geology

The Tuff showing is located on the southeast side of Pokosha Creek, about 750 metres southwest of its confluence with Ashlu Creek.

The area is underlain by granodiorite of the Jurassic Cloudburst pluton of the Coast Plutonic Complex (Geological Survey of Canada Paper 90-1F). A major regional northwest trending shear zone of Cretaceous age, the Ashlu Creek shear zone, occurs to the immediate west.

The Tuff showing consists of a 10 metre wide quartz vein striking 330 degrees and dipping 60 degrees south and containing some 'spectacular aggregates of sulphides' (marcasite and pyrite). The vein occurs at the contact of Lower Cretaceous Gambier Group dacite and granodiorite of the Jurassic Cloudburst pluton (Coast Plutonic Complex).

A 15 metre chip sample over both vein and dacite was reported to have assayed 17.14 grams per tonne gold (Assessment Report 17889). However, subsequent drill, surface and tunnel samples were uniformly low in gold and silver.

An old tunnel, 10 metres in length, shows a good cross-section of the quartz vein at the Tuff showing. The vein is referred to as the George vein.

Quartz float and veining in subcrop, between the main showing area and northward to an exposure in Ashlu Creek, suggests the George vein could be part of a vein system extending up to 1 kilometre. The vein outcrop in Ashlu Creek yielded 4.15 grams per tonne gold (Assessment Report 24036).

The area has been explored in conjunction with the nearby Ashlu mine (MINFILE 092GNW013). In 1988, Valentine Gold Corp, on the behalf of Tenquille Resources, completed a program of geological mapping and rocks sampling. In 1994, 421424 B.C. Ltd. staked the area and Homegold Resources Ltd was retained to prospect and geologically map the claims. During 2009 through 2012, Ashlu Mines completed a program of rock, soil and silt sampling on the area.

EMPR ASS RPT *17889, *24036, 31343, 32702, 33444
EMPR EXPL 1976-E120; 1977-E120; *1978-E138; 1979-138
EMPR FIELDWORK 1980, pp. 165-178
GSC MAP 42-1963; 1386A
GSC OF 611
GSC P 89-1E, pp. 177-187; 90-1E, pp. 183-195; 90-1F, pp. 95-107
Ditson, G.M. (1978): Metallogeny of the Vancouver-Hope Area,
British Columbia, M.Sc. Thesis, University of British Columbia