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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  12-Dec-1991 by Peter S. Fischl (PSF)

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NMI 092H8 Cu2
Name NELSON FRACTION (L.1778S), VOIGT'S CAMP Mining Division Similkameen
BCGS Map 092H038
Status Showing NTS Map 092H07E, 092H08W
Latitude 049º 20' 18'' UTM 10 (NAD 83)
Longitude 120º 30' 17'' Northing 5468063
Easting 681263
Commodities Copper Deposit Types L03 : Alkalic porphyry Cu-Au
Tectonic Belt Intermontane Terrane Plutonic Rocks, Quesnel
Capsule Geology

The Nelson showing is located 160 metres west of Wolfe Creek and 13 kilometres south of Princeton.

The area is underlain by the eastern facies of the Upper Triassic Nicola Group, comprising mafic augite and hornblende porphyritic pyroclastics and flows. These rocks are intruded by diorite and monzonite, locally pyroxenite and gabbro, of the Early Jurassic Copper Mountain and Lost Horse intrusions.

Micromonzonite/latite of the Lost Horse Intrusions is irregularly mineralized with disseminated pyrite and chalcopyrite. The strongest mineralization is exposed in a 34-metre long tunnel, 160 metres west of Wolfe Creek. A chip sample taken along the south wall of this tunnel assayed 0.28 per cent copper over 23 metres, and a selected grab sample assayed 1.97 per cent copper and 0.40 gram per tonne gold (Geological Survey of Canada Memoir 171, page 37).

This showing was explored by three tunnels and a number of trenches, excavated some time between 1916 and 1934. Cumont Mines Ltd. carried out soil, magnetometer and induced polarization surveys in 1968. Newmont Exploration of Canada Ltd. completed soil and geophysical surveys over the showing in 1987.

EMPR AR 1916-524; 1968-207
EMPR ASS RPT 1985B 1987A 1987B 16745, 17462
GSC BULL 239, pp. 140,141
GSC MAP 300A; 888A; 1386A; 41-1989
GSC MEM *171, p. 37; 243
GSC P 85-1A, pp. 349-358
GSC SUM RPT 1906, pp. 51,52
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J.H. (1967): Petrology, Structure and Origin of the Copper Mountain Intrusions near Princeton, British Columbia; unpublished Ph.D. thesis, University of British Columbia