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File Created: 18-Dec-1991 by Peter S. Fischl (PSF)
Last Edit:  28-May-1992 by Peter S. Fischl (PSF)

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Name HOLDFAST (L.3537) Mining Division Similkameen
BCGS Map 092H038
Status Showing NTS Map 092H07E
Latitude 049º 20' 18'' UTM 10 (NAD 83)
Longitude 120º 32' 41'' Northing 5467968
Easting 678357
Commodities Copper Deposit Types L03 : Alkalic porphyry Cu-Au
Tectonic Belt Intermontane Terrane Quesnel, Plutonic Rocks
Capsule Geology

The Holdfast showing is situated on the Similkameen River, 13.5 kilometres south of Princeton.

The showing is hosted in volcanics of the Upper Triassic Nicola Group, which are extensively intruded by microdiorite, micromonzonite and microsyenite of the Early Jurassic Lost Horse Intrusions.

Chalcopyrite and pyrite occur in a zone 18 metres wide. The chalcopyrite has been altered to malachite and azurite at surface.

EMPR AR 1908-126; 1916-524
GSC MAP 300A; 888A; 1386A; 41-1989
GSC MEM 171; 243
GSC P 85-1A, pp. 349-358
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J.H. (1967): Petrology, Structure and Origin of the Copper Mountain Intrusions near Princeton, British Columbia; unpublished Ph.D. thesis, University of British Columbia