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File Created: 14-May-1998 by BC Geological Survey (BCGS)
Last Edit:  14-May-1998 by Garry J. Payie (GJP)

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NMI 104G3 Cu12
Name STEEP CREEK, GALORE CREEK, STIKINE COPPER, GC, HAB, BUY Mining Division Liard
BCGS Map 104G013
Status Showing NTS Map 104G03W
Latitude 057º 09' 41'' UTM 09 (NAD 83)
Longitude 131º 27' 47'' Northing 6338042
Easting 351042
Commodities Gold Deposit Types L03 : Alkalic porphyry Cu-Au
Tectonic Belt Intermontane Terrane Stikine, Plutonic Rocks
Capsule Geology

A reconnaissance rock sample from a drainage channel near the northern limit of the Galore Creek syenite complex assayed 18.77 grams per tonne gold (Assessment Report 19397, page 25). Attempts to reproduce this value at the "Steep Creek" zone were unsuccessful and the gold distribution in the rocks was thought to be spotty.

The Galore Creek syenite complex comprises a series of Late Triassic to Early Jurassic orthoclase-porphyry syenitic bodies which have intruded coeval Upper Triassic Stuhini Group volcanic rocks and related sediments. Faults which offset and segment the intrusive rocks and a sub-horizontal fracture cleavage are the two main structural elements in the syenite complex. The complex is roughly 5 by 2.5 kilometres in area.

The complex is host to a number of alkalic porphyry copper-gold deposits. These are hosted primarily by highly altered potassium- enriched volcanic rocks and pipe-like breccias adjacent to syenite dikes and stocks. Please refer to the Central Zone deposit (104G 090) for further details of the Galore Creek deposits.

Bibliography
EMPR AR 1956-14; 1957-74; 1961-78; 1962-7; 1963-8; 1964-15; *1965-19; 1966-25; 1967-29
EMPR ASS RPT 177, 367, 368, 371, 372, 373, 444, 445, *19397, 20558, 21900
EMPR FIELDWORK 1975, p.79; 1988, pp. 269-283
EMPR OF 1989-8
EMPR GEM *1972-520; 1973-501; 1974-336
EMPR GEOLOGY 1976, p. 122
EMPR MAP 65
EMPR BULL *92
EMR MIN BULL MR 166
EMR MP CORPFILE (Kennecott Copper Corp.; Kennco Exp. Canada Ltd.; Hudson Bay Mining and Smelting Co. Ltd.; Stikine Copper Ltd.)
EMR MP RESFILE (Central Zone, Galore Creek)
GSC MAP 9-1957; 11-1971; 310A; 1418A
GSC MEM 246
GSC P 71-44, p. 24
CIM BULL *July 1966, pp. 841-853; Nov. 1968, p. 1329
CIM SPECIAL VOL. *15, pp. 402-414; *46, pp. 630-644
CIM TRANS VOL LXIX, p. 251
CMH 1976, p. 302
N MINER May 3, 1973
Allen, D. (1966) UBC Masters Thesis
EMPR PFD 804373

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