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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  03-Jul-2013 by Nicole Barlow (NB)

Summary Help Help

NMI
Name KAM, RICH Mining Division Kamloops
BCGS Map 092I058
Status Showing NTS Map 092I10E
Latitude 050º 35' 54'' UTM 10 (NAD 83)
Longitude 120º 34' 01'' Northing 5607985
Easting 672186
Commodities Copper Deposit Types L03 : Alkalic porphyry Cu-Au
Tectonic Belt Intermontane Terrane Quesnel
Capsule Geology

The Kam showing belongs to the Wood Claim Group and is located 17 kilometres due west of the city of downtown Kamloops, on the northeastern slope of Chuwhels Mountain.

The oldest rocks of the area are those on the property, part of the Upper Triassic Nicola Group. The rock types comprising this group are greenstone, andesite, basalt, agglomerate, breccia, tuff, minor argillite, limestone and conglomerate.

The next rock group in decreasing age sequence is the Jurassic Coast Intrusives, which outcrop throughout the Nicola volcanics. The rock types are granite, granodiorite, and gabbro; or syenite, monzonite, diorite and gabbro of the Iron Mask Batholith. The Iron Mask Batholith trends northwesterly across the northeastern part of the property.

Mainly basalt, the Tertiary volcanics of the Kamloops Group are the youngest rocks occurring on the property.

Many copper occurrences in the general area are found within the Iron Mask Batholith and the older, intruded Nicola rocks close to the batholith. Generally, they occur with veins, impregnations, stockworks and mineralized shear zones in the country rock, with the principal copper minerals being chalcopyrite and bornite and some chalcocite, cuprite, azurite and malachite. Additional minerals that often occur with the copper are magnetite and pyrite.

The area became the center of one of the hottest staking rushes in Canada when significant mineralization was discovered on the Afton property in the early 1970s. Eventually, the discovery became an ore deposit that Teck mined from 1977 to 1988. At the beginning of production, Afton had drill-proven ore reserves of 30.84 million tonnes grading 1 per cent copper, 0.58 gram per tonne gold and 4.19 grams per tonne silver. The main mineral form was native copper and chalcocite with minor covellite and chalcopyrite found within an intrusive breccia at the contact of the Nicola volcanics. The pit is located approximately 2 kilometres north of the northern border of the Wood property (Assessment Report 32912).

Work was done on the property during and after the Afton staking rush of the 1970s. It consisted mainly of magnetic, induced polarization and resistivity surveys, soil sampling and geological mapping. Many of the targets were drill tested.

A mobile metal ion soil sampling survey with grid emplacement was carried out by Green Valley Mine Inc. within the Corona zone of the Wood Group. The survey occurred over three years—2006, 2008 and 2011—and encompassed three lines each. The purpose of the work was to locate any mineralization potentially similar to the nearby Afton deposits. Results showed that the mean background level was unusually high within the survey area for gold and copper. The mobile metal ion survey revealed two anomalous zones that appeared to strike northeasterly and that showed anomalous values for zinc, silver, lead, and cadmium, correlating with induced polarization highs (Assessment Report 32912).

Bibliography
EMPR ASS RPT 4214, 8721, *9271, *32912
EMPR BULL 77
GSC OF 165; 980; 2490
GSC MAP 886A; 887A; 9-1963; 1394A; 42-1989
GSC MEM 249
GSC P 44-20; 82-1A, pp. 293-297; 85-1A, pp. 349-358

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