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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  03-Jun-1991 by Dorthe E. Jakobsen (DEJ)

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Name SPOTTED HORSE (L.5375) Mining Division Nelson
BCGS Map 082F034
Status Past Producer NTS Map 082F06W
Latitude 049º 19' 33'' UTM 11 (NAD 83)
Longitude 117º 19' 08'' Northing 5463727
Easting 476828
Commodities Gold, Silver, Tungsten Deposit Types L01 : Subvolcanic Cu-Ag-Au (As-Sb)
I05 : Polymetallic veins Ag-Pb-Zn+/-Au
I12 : W veins
Tectonic Belt Omineca Terrane Quesnel, Plutonic Rocks
Capsule Geology

The Spotted Horse deposit is located on the headwaters of a west flowing tributary of Barrett Creek about 17 kilometres north- northeast of Salmo. Workings comprise an open cut, a short adit and trenches. The workings are just northeast of the Porto Rico mine (082FSW189).

The area is underlain by basaltic lapilli tuff (Je2) and basalt flows and flow breccias (Je4) of the Lower Jurassic Elise Formation, Rossland Group (Open File 1989-11).

The adit exposes quartz and calcite veinlets and stringers in a shear zone, 0.91 to 1.2 metres wide, which generally strikes 110 degrees and dips 55 to 60 degrees north. The 0.15-metre wide quartz vein at the portal pinches out within a short distance. Native gold has been reported from the stringers and tungsten has also been reported from this occurrence. The vein hosts pyrite and gold. The vein is probably a continuation of the Porto Rico (082FSW189) main vein. The host rock is an augite porphyry sill which intrudes the volcanics.

Production from 1901, 1903 and 1937 totalled 47 tonnes which produced 1649 grams of gold and 2083 grams of silver.

EMPR AR 1899-597; 1902-161; 1903-244; 1904-127; *1937-A39,E27,46; 1944-62
EMPR BULL 1, p. *98; 10, p. 93; 10 (Rev.), p. 155; 41; 109
EMPR FIELDWORK 1980, pp. 149-158; 1981, pp. 28-32, pp. 176-186; 1987, pp. 19-30; 1988, pp. 33-43; 1989, pp. 247-249; 1990, pp. 291-300
EMPR GEM 1972-51; 1973-63
EMPR MAP 7685G; RGS 1977; 8480G
EMPR OF 1988-1; *1989-11; 1991-16; 1991-17; 1994-8
GSC MAP 1090A; 1091A; 1144A; 1145A
GSC MEM 191, p. 47; 308, p. 173
Andrew, K.P.E. and Hoy, T. (1990): Structural Models for Precious Metal Deposits in Jurassic Arc Volcanic rocks of the Rossland Group, southeastern B.C.; abstract with program, G.A.C. - M.A.C. Annual Meeting, Vancouver, B.C., p. A3
Hoy, T. and Andrew, K.P.E. (1988): Geology, geochemistry and mineral deposits of the Lower Jurassic Rossland Group, southeastern British Columbia; abstract in Twelfth District 6 Meeting, Canadian Institute of Mining and Metallurgy, Fernie, B.C., pp. 11-12
EMPR PFD 895115