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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  19-Feb-1991 by Robert G. Gaba (RGG)

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Name PRIMROSE, CONGRESS EXTENSION Mining Division Lillooet
BCGS Map 092J098
Status Showing NTS Map 092J15E
Latitude 050º 55' 48'' UTM 10 (NAD 83)
Longitude 122º 34' 55'' Northing 5642124
Easting 529379
Commodities Copper Deposit Types I01 : Au-quartz veins
Tectonic Belt Intermontane Terrane Bridge River
Capsule Geology

The Congress Extension (Primrose vein) is 0.5 kilometers north of the west end of Marshall Lake. The prospect is within argillite, chert, greenstone and minor limestone of the Mississippian to Jurassic Bridge River Complex (Group) and is adjacent to the Marshall Creek fault zone. The fault zone is intermittently occupied by serpentinite and listwanite, assigned to the Permian and older Shulaps Ultramafic Complex. The fault separates Bridge River rocks to the south from slate and argillite of the Upper Triassic Hurley Formation (Cadwallader Group), to the north.

Two parallel quartz veins, up to 2.0 metres in thickness and 240 metres in length, strike northwest and follow a chert-argillite- listwanite contact. The quartz veins contain minor disseminated pyrite and rare chalcopyrite, with little or no gold.

EMPR ASS RPT *15386, 16881, 18435
EMPR EXPL 1986-C259; 1988-C122
EMPR FIELDWORK 1974, p. 35; 1985, pp. 303-310; 1986, pp. 23-29; 1987, pp. 93-130; 1988, pp. 105-152; 1989, pp. 45-72; 1990, pp. 75-83
EMPR OF 1987-11; 1988-3; 1989-4; 1990-10
GSC MAP 1883
GSC SUM RPT 1915, p. 83
CJES 1987, Vol. 24, pp. 2279-2291
EMPR PFD 820347, 673462