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File Created: 13-May-2015 by Karl A. Flower (KAF)
Last Edit:  23-May-2015 by Karl A. Flower (KAF)

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NMI
Name NBR, NORTH BR Mining Division Lillooet
BCGS Map 092J093
Status Showing NTS Map 092J14W
Latitude 050º 54' 29'' UTM 10 (NAD 83)
Longitude 123º 29' 56'' Northing 5639719
Easting 464924
Commodities Copper, Molybdenum, Silver, Gold Deposit Types L04 : Porphyry Cu +/- Mo +/- Au
Tectonic Belt Coast Crystalline Terrane Plutonic Rocks
Capsule Geology

The NBR occurrence is located northwest of Salal Creek at the headwaters of Bridge River.

The area is underlain mainly by intrusive rocks of the Lord Pluton, an Early Tertiary intrusive complex of the Coast Plutonic Complex. Locally, Pleistocene volcanic rocks of the Garibaldi Group overlie the pluton. The dominant rock types include quartz monzonite, biotite granodiorite and quartz diorite with minor amounts of gabbro, hornblendite and intrusive breccia. Dykes of aplite, andesite, feldspar porphyry and gabbro also cut older intrusive rocks.

Locally, sulphide mineralization, mainly chalcopyrite and molybdenite, is strongly fracture- controlled, confined to veins and veinlets mainly within a quartz monzonite. Other sulphide minerals present include bornite, chalcocite and pyrite; oxidation products of sulphides include malachite, azurite and tenorite. Wallrock alteration is weakly propylitic, with sericite and potassium feldspar associated with quartz and sulphides in, and adjacent to, veins.

In 2008, a grab sample assayed 3.38 per cent copper, 0.014 per cent molybdenum, 34.3 grams per tonne silver and 1.04 grams per tonne gold (Assessment Report 30991).

In 1970, Canex Aerial Exploration completed programs of geological mapping and an induced polarization survey, totalling 2.5 line-kilometres, on the area as the BR claims. In 1980, Amax of Canada completed a program of geological mapping, ground geophysical surveys and rock, silt and soil sampling. During 2005 through 2012, programs of prospecting, geochemical sampling, trenching and an induced polarization survey were completed on the area as the Copper 1-25 claims.

Bibliography
EMPR AR 1961-25
EMPR ASS RPT 2499, 2500, 8804, 28271, 29904, 30730, *30991, 31388, 32065, 33319
EMPR GEM 1970-222; 1971-310
GSC OF 482
GSC P 75-1A, pp. 37-40
EMPR PFD 802124

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