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File Created: 07-Apr-1997 by Dani J. Alldrick (DJA)
Last Edit:  11-Apr-2012 by George Owsiacki (GO)

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NMI
Name SNYDER Mining Division Skeena
BCGS Map 103P041
Status Showing NTS Map 103P05W
Latitude 055º 27' 34'' UTM 09 (NAD 83)
Longitude 129º 53' 31'' Northing 6146282
Easting 443598
Commodities Gold, Silver Deposit Types I01 : Au-quartz veins
Tectonic Belt Coast Crystalline Terrane Stikine, Plutonic Rocks
Capsule Geology

The Snyder occurrence is located west of the centre of Upper Dam Lake (Anyox Creek), and 7 kilometres northeast of the Anyox smelter (103P 021).

The region is underlain by a roof pendant, consisting of volcanic and sedimentary rocks, within the Eocene Coast Plutonic Complex. These pendant rocks have been correlated with Middle-Upper Jurassic Hazelton Group rocks and overlying upper Middle to Upper Jurassic Bowser Lake Group sedimentary rocks (Geological Survey of Canada Open File 3453). The Hazelton rocks consist of variably chloritized pillow and massive basalt with minor mafic tuffs. The overlying Bowser Lake sediments consist of siltstone and sandstone with minor chert and limestone.

The Snyder showing is a massive quartz-carbonate vein exposed in scattered outcrop over a 50 metre strike length hosted in pillow basalt. The vein dips steeply and averages 30 centimetres in width. Over a small section of its total length, this vein contains up to 60 per cent fine pyrite and marcasite as scattered blebs or knots within the quartz.

A sample of the material yielded 0.064 gram per tonne gold, 81 parts per million copper, 30 parts per million zinc, 30 parts per million lead and 0.6 gram per tonne silver (D.J. Alldrick, B.C. Geological Survey, unpublished data, 1998).

Bibliography
EMPR BULL 63
EMPR FIELDWORK 1985, pp. 211-216; 1988, pp. 233-240; 1990, pp. 235-243; 2005, pp. 1-4
EMPR MAP 8
EMPR OF 1986-2; 1994-14
EMR MIN BULL MR 223 B.C. 298
GSC MAP 307A; 1385A
GSC OF 864; 3453
Sharp, R.J. (1980): The Geology, Geochemistry & Sulphur Isotopes of The Anyox Massive Sulphide Deposits, University of Alberta, M.Sc. Thesis

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