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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  09-Jun-2022 by Karl A. Flower (KAF)

Summary Help Help

NMI 092L7 Cu1
BCGS Map 092L036
Status Developed Prospect NTS Map 092L07W
Latitude 050º 19' 55'' UTM 09 (NAD 83)
Longitude 126º 50' 56'' Northing 5577752
Easting 653093
Commodities Copper, Gold, Zinc, Molybdenum, Cadmium, Magnetite, Iron, Silver Deposit Types
Tectonic Belt Insular Terrane Wrangell
Capsule Geology

The Nimpkish Copper occurrence is located on the south side of Kinsman Creek, approximately 6.5 kilometres southeast of the creek mouth on Nimpkish Lake and at an elevation of 640 metres.

The area is underlain by north striking tholeiitic basalts of the Karmutsen Formation and overlying carbonates of the Quatsino Formation, both of the Upper Triassic Vancouver Group. Granodiorite of the Upper Jurassic Nimpkish batholith (which is part of the Jurassic Island Plutonic Suite) intrudes the Vancouver Group rocks. Strong regional north to northwest trending faults, often defining intrusive and lithological contacts, traverse the area.

The Nimpkish Copper occurrence is one of several skarn-limestone replacement deposits over a distance of 1.0 kilometre along the Nimpkish batholith western contact. Several lamprophyre dikes are present.

Mineralization consists of a 6 metre wide by 7 metre long and 14 metre high lens of massive chalcopyrite exposed in Copper Creek (the southeast continuation of Kinman Creek). The chalcopyrite body attains thicknesses of about 3.6 metres. The sulphide mineralization is accompanied variably and locally by magnetite, marcasite, covellite, bornite, molybdenite, greenockite and skarn minerals such as garnet, epidote, actinolite, calcite, quartz, chlorite and sericite.

The occurrence lies approximately 500 metres east of East Hazel (MINFILE 092L 206) and several small showings occur in between the two.

Samples assayed between 4.8 and 13.03 grams per tonne gold, 81.6 to 104.6 grams per tonne silver, 11.46 to 13.75 per cent copper and 0.30 to 0.60 per cent zinc (Geological Survey of Canada Memoir 272, page 72). In 1989, a sample of massive chalcopyrite and pyrrhotite from the Kinman adit assayed 79 grams per tonne silver, 5.6 grams per tonne gold, 12.6 per cent copper and 0.145 per cent zinc (Assessment Report 20092).

The mineralized lens is estimated to contain 2014 tonnes of ore grading 13.75 per cent copper, 0.60 per cent zinc and 104.3 grams per tonne silver (Assessment Report 25764).

Twenty metres to the west lies a lens of massive chalcopyrite and calcite. Copper values assayed 0.18 to 0.67 per cent with trace to 0.1 per cent zinc. Gold and silver are present only in trace amounts (Geological Survey of Canada Memoir 272).

Work History

In 1928, E.L. Kinman and Associates discovered the main showings. In 1929 and 1930, Cominco optioned the tenures and completed surface trenching, twenty diamond drill holes, totalling 2010 metres, and a 52.5 metre adit. In 1962, Camloc Copper completed a program of geological mapping and a 0.7 kilometre magnetometer survey on the area as the Hazel Group. In 1966, Empire Development completed a program of ground geophysical surveys and geological mapping on the area as the Alpha, Hazel and Pie claims, Kinman property. In 1989, W.J. Laird completed a program of rock sampling and geological mapping on the area to the west as the Nimpkish claims. In 1998 and 1999, Doublestar Resources completed programs of prospecting and ground geophysical surveys on the area as the 2Star claim group. In 2010 and 2012, Selkirk Metals completed programs of prospecting and rock sampling. In 2016 and 2018, Selkirk Metals Corp. completed programs of geological mapping and geochemical (rock and soil) sampling on the area as the 2 Star property.

EMPR AR 1928-379; *1929-381; *1930-299; 1965-230; 1966-68
EMPR ASS RPT 456, *831, 832, *20092, *25764, 26174, 31717, 33632, 36491, 38358
EMPR GEM 1970-273
EMPR PF (Sketch of Kinman claims, 1:18000; Nimpkish Copper Group Geology, 1;3600, 1929, H.C. Gunning; Nimpkish Lake Area, 1:63360; Section B, Kinman to Larson Showing, 1:63360; Sketch Plan Showing various properties, New Nimpkish Lake, 1929, A. Lakes, 1:8000)
EMR MP CORPFILE (Reako Explor. Ltd.; Panther Mines Ltd.; Imperial Metals Corp.; Mar-Gold Resources Ltd.)
GSC BULL 47; 242
GSC MAP 4-1974; 255A; 1029A; 1552A
GSC MEM *272-72
GSC OF 9; 170; 463
GSC P 38-2; 38-3; 71-36; 72-44; *74-8
GSC SUM RPT *1929A; *1931A, p. 26
CJES 18, p. 1; 20, p. 1, 1983
GCNL #105 (June 2), 1998
Alsen, J.B.: A Magnetite Skarn Deposit near Bonanza Lake, 1975, unpubl. B.Sc. Thesis, University of British Columbiarson, D.J.T., (1968): Metallogenic Study of Vancouver Island with emphasis on the Relationship of Plutonic Rocks to Mineral Deposits, Ph.D. Thesis, Carleton University, Ottawa
Falconbridge File