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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  14-Dec-1991 by Peter S. Fischl (PSF)

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Name COPPER BLUFF (L.1940), COPPER CLIFF (L.1939), CUMONT Mining Division Similkameen
BCGS Map 092H038
Status Showing NTS Map 092H07E
Latitude 049º 19' 49'' UTM 10 (NAD 83)
Longitude 120º 32' 37'' Northing 5467075
Easting 678467
Commodities Copper, Gold, Silver Deposit Types L03 : Alkalic porphyry Cu-Au
Tectonic Belt Intermontane Terrane Plutonic Rocks, Quesnel
Capsule Geology

The Copper Bluff showing is situated on the east bank of the Similkameen River, 14 kilometres south of Princeton.

This showing occurs in biotite augite porphyritic micromonzonite of the Early Jurassic Lost Horse Intrusions. The rock is cut by fractures and shears containing pink orthoclase. One prominent shear zone, 1.8 to 2.4 metres wide, and 60 metres above the river on the Copper Bluff Crown-granted claim, contains blebs and irregular masses of bornite in a gangue of orthoclase. Anomalous gold and silver values are reported to accompany this copper mineralization (Minister of Mines Annual Report 1898, page 1113).

Percussion drilling to the north, near the south end of the Copper Cliff Crown-granted claim, encountered low-grade copper mineralization.

The showing was prospected as early as 1898. Cumont Mines Ltd. carried out geological mapping, induced polarization and soil surveys, and percussion drilling in 1968.

EMPR AR 1898-1113; *1901-117; 1903-246; 1968-207
EMPR ASS RPT 1855, 1985B
GSC BULL 239, pp. 140,141
GSC MEM 171, p. 49; 243
GSC P 85-1A, pp. 349-358
GSC RPT 986 (1908)
GSC SUM RPT 1906, pp. 51,52
GSC MAP 300A; 888A; 1386A; 41-1989
CIM BULL Vol. 44, No. 469, pp. 317-324 (1951); Vol. 61, No. 673, pp. 633-636 (1968)
CIM Trans. Vol. 18, pp. 192-201 (1915)
CJES Vol. 24, pp. 2521-2536 (1987)
Montgomery, J.H. (1967): Petrology, Structure and Origin of the Copper Mountain Intrusions near Princeton, British Columbia; unpublished Ph.D. thesis, University of British Columbia
EMPR PFD 896732