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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 Fe2
Name MAGNET, EXCEL - EXCELSIOR, NIMP, TSULTON Mining Division Nanaimo
BCGS Map 092L046
Status Prospect NTS Map 092L07W
Latitude 050º 24' 29'' UTM 09 (NAD 83)
Longitude 126º 57' 42'' Northing 5585987
Easting 644836
Commodities Magnetite, Iron, Copper Deposit Types
Tectonic Belt Insular Terrane Wrangell
Capsule Geology

The Magnet occurrence is located near the eastern shore of Nimpkish Lake, approximately 1 kilometre southeast of the Halfway Islands.

The area is underlain by volcanics and sediments of the Upper Triassic Karmutsen, Quatsino and Parson Bay formations (Vancouver Group) and by volcanics of the Lower Jurassic Bonanza Group. These rocks have been intruded by granodiorite of the Jurassic Island Plutonic Suite.

Locally, Karmutsen volcanics are overlain by a flat-lying remnant of Quatsino limestone. To the southeast these rocks are intruded by granodiorite. Along or near the contact with the granodiorite and near the limestone-volcanic contact, massive magnetite bodies are associated with diopside-grossularite-epidote skarns. Veins and disseminations of pyrite, pyrrhotite and chalcopyrite occur in the magnetite bodies and the skarns. The skarn zone varies from 0.5 to greater than 10 metres in width with chalcopyrite-pyrite veins up to 1.5 metres in width.

In 1972, a chip sample across a 1.5-metre chalcopyrite-pyrite vein assayed 15.4 per cent copper (Assessment Report 4447).

Work History

In 1952 and 1953, Noranda Mining and Exploration completed a program of trenching, geological mapping and a ground magnetometer survey on the area as the Magnet claims. In 1972, First National Uranium Mines completed a program of geological mapping, soil sampling and a ground magnetometer survey on the area as the Excel and Excelsior claims. In 1973, Groundstar Resources completed programs ground geophysical surveys. In 1982 and 1984, Mintek Resources completed programs of soil sampling and ground and airborne geophysical surveys on the area as the Nimp Group. In 1988, Industrial Filler Ltd. completed two diamond drill holes, totalling 300.0 metres, on the area as the Tsulton claims. In 2000 and 2001, Homegold Resources completed a program of geological mapping and two diamond drill holes, totalling 51.8 metres, on the area as the Smiley 1-6 claims. During 2013 through 2016, Graymont Western Canada Inc. completed programs of rock sampling and ground magnetic surveys on the area as part of the Nimpkish property.

Bibliography
EMPR ASS RPT *93, *94, *4447, 4789, 10986, 12348, 17759, 26686, 34609, 34923, 36034, 36644
EMPR EXPL 1982-228; 1983-334
EMPR GEM 1973-259
GSC ANN RPT 1886
GSC BULL 172; 242
GSC MAP 1029A; *4-1974
GSC MEM 272
GSC OF 9; 170; 463
GSC P 38-2; 38-3; 71-36; 72-44; *74-8
GSC SUM RPT 1929A; *1931A, p. 32
CJES 18, p. 1; 20, p. 1, Jan., 1983
GCNL #12, 1983
Carson, 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
Sangster, D.F., (1964): The Contact Metasomatic Magnetite Deposits of Southwestern British Columbia, Ph.D. Thesis, University of British Columbia

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