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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  24-Jun-2020 by Karl A. Flower (KAF)

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NMI 092H7 Cu4
Name FRIDAY CREEK, WHEELER, GLADSTONE, ILK Mining Division Similkameen
BCGS Map 092H038
Status Prospect NTS Map 092H07E
Latitude 049º 18' 00'' UTM 10 (NAD 83)
Longitude 120º 33' 38'' Northing 5463669
Easting 677345
Commodities Copper, Gold, Silver, Palladium, Platinum Deposit Types L03 : Alkalic porphyry Cu-Au
Tectonic Belt Intermontane Terrane Quesnel
Capsule Geology

The Friday Creek prospect is located on Friday Creek, about 0.6 kilometres west of the Similkameen River and 18 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. The deposit lies about 400 metres northeast of the Boundary fault. This steeply dipping normal fault downdrops overlying Eocene volcanics and sediments of the Princeton Group to the west against Nicola Group rocks and the Copper Mountain stock (Copper Mountain Intrusions).

Numerous small pink pegmatite dykes, comprised of orthoclase, biotite, plagioclase, quartz and sphene, cut pyroxenite, gabbro and monzonite of the Copper Mountain stock, about 200 metres northeast of the contact with Nicola Group volcanics. The dykes occur singly or more commonly in groups and networks. They are especially numerous in the pyroxenite and gabbro. The dykes are steep to flat dipping and vary from less than a centimetre to 1.2 metres in width. Many of the steeply dipping dykes strike northeast and cannot be traced for more than a metre.

Similarly, the various intrusive rocks are cut by a number of faults, either flat or steeply dipping. Most of the faults are in pyroxenite and gabbro. The steeply dipping faults predominantly strike northeast and dip southeast or northwest. Some of the faults lie along pegmatite dykes, while others displace them.

The intrusive rocks are brecciated and altered near the faults. Biotite and epidote are plentiful, and are accompanied by abundant disseminated pink feldspar in the pyroxenite.

Mineralization is found mostly near or in the faults. Bornite and chalcopyrite occur as fracture-fillings and local disseminations in brecciated and altered rocks, and as blebs and stringers in calcite or quartz veins in faults. Disseminated pyrite is partly associated with the copper mineralization. Malachite and azurite occur in areas of weak to moderate oxidation while limonite is present in strongly oxidized exposures. Best mineralization occurs in pyroxenite, as ill-defined zones and irregular lenses up to 4.5 metres wide, commonly extending from the northwest walls of northeast striking faults. Four areas of such mineralization are distributed along a north-south line crossing Friday Creek, over a distance of 120 metres. Other mineralized outcrops occur in the immediate vicinity.

Mineralization is also associated, to a lesser extent, with the pegmatite dykes. Bornite, chalcopyrite and chalcocite occur as disseminations, pods and lenses in the dykes and in pyroxenite, near the dykes. The pegmatite-hosted sulphides tend to be more abundant where the dykes intersect each other.

The copper mineralization comprising this prospect appears to contain significant precious metal values. Three grab samples taken from the old workings in 1960 assayed 9.51 to 52.6 per cent copper, 4.5 to 411 grams per tonne gold, 58 to 374 grams per tonne silver and 1.7 to 717 grams per tonne palladium (D. Hamelin, 1960, samples 33190, 38676, 38677). A chip sample taken in 1986 contained 1.5 per cent copper, 5 grams per tonne gold, 10.0 grams per tonne silver and 0.98 grams per tonne palladium over 1.37 metres (Brican Resources Ltd., Statement of Material Facts, page 9, sample FCD 08). Diamond drilling in 1987 is reported to have intersected narrow zones of significant precious metals and copper mineralization. A 3.0-metre section of drill core contained 0.99 per cent copper, 6.3 grams per tonne gold and 0.42 gram per tonne palladium (Brican Resources Ltd., Statement of Material Facts, page 9, hole F-87-4).

Detailed mineralogy has shown the presence of Temagamite (Pd3HgTe3), Kotulskite (PdTe) and Merenskyite (PdTe2) (GeoFile 2002-2).

This prospect was explored as early as 1891. E. Wheeler and associates assessed the deposit by trenching and excavating five adits between 1891 and 1908. Friday Creek Developments Ltd. carried out stripping, trenching, geophysical surveys and 516 metres of diamond drilling in 1960 and 1961. Princeton Exploration Ltd. excavated a 30-metre long adit and completed 149 metres of surface and underground diamond drilling in 1963. The prospect was most recently mapped, sampled and diamond drilled by Brican Resources Ltd. in 1986 and 1987. During 2007 through 2009, Canadian international Minerals Inc. examined the area as the Copper Mountain property. Exploration work included programs of limited prospecting and sampling and an airborne magnetometer and electromagnetic survey.

Bibliography
EM GEOFILE 2002-2
EMPR AR 1900-898; 1901-1088,1172; 1908-129,137; 1929-277; 1958-30,
31; *1960-56,57; 1961-56; *1962-61-63; *1963-59-61; 1965-161;
1966-245; 1968-214
EMPR ASS RPT 751
EMPR BULL *59, pp. 78-81
EMPR GEM 1969-288
EMPR PF (*Brican Resources Ltd. (1988): Statement of Material Facts,
Vancouver Stock Exchange; Hamelin, D.F. (1961): Letter to P.J.
Mulcahy, Deputy Mines Minister; *Carr, J.M. (1960): Comments
regarding application for road grant by Friday Creek Development
Company Ltd. (2 page hand written report); *Hamelin, D.F. (1960):
1:2400 scale map of old workings, sample sites and diamond
drilling for Friday Creek Development Co. Ltd.; Anonymous
(undated) 1:1200 scale geology map of Friday Creek prospect)
EMR MP CORPFILE (Friday Creek Development Co. Ltd., Samson Mines
Ltd., Copper Basin Mines Ltd.)
GSC BULL 239, pp. 140,141
GSC MAP 300A; 888A; 889A; 1386A; 41-1989
GSC MEM *171, pp. 25,47,48; 243, pp. 81,89,90
GSC P 85-1A, pp. 349-358
CIM BULL Vol. 44, No. 469, pp. 317-324 (1951); Vol. 61, No. 673, pp.
633-636 (1968)
CJES Vol. 24, pp. 2521-2536 (1987)
V STOCKWATCH Dec 3., 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
Arseneau, G. (2007-12-12): Techincal Report on the Copper Mountain Property
Arseneau, G. (2009-10-01): Copper Mountain Project

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