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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  28-Nov-2013 by Karl A. Flower (KAF)

Summary Help Help

NMI
Name AU Mining Division Alberni
BCGS Map 092F014
Status Showing NTS Map 092F03W
Latitude 049º 08' 44'' UTM 10 (NAD 83)
Longitude 125º 23' 39'' Northing 5446397
Easting 325403
Commodities Gold, Copper, Zinc, Silver Deposit Types I06 : Cu+/-Ag quartz veins
Tectonic Belt Insular Terrane Wrangell
Capsule Geology

The Au occurrence is located on an easterly flowing tributary of the Kennedy River, approximately 750 metres south east of Turtle Lake.

The area is underlain by Upper Triassic Vancouver Group, Karmutsen Formation volcanics which are intruded by and in fault contact with granodiorite of the Early to Middle Jurassic Island Intrusions. The volcanics are massive, fine grained and greenish. They contain zones of up to 8 per cent disseminated pyrite and pyrrhotite near to the granodiorite intrusion, where they have been hornfelsed to a flinty hard, biotitic, dark grey rock. Andesite dikes, many porphyritic containing feldspar phenocrysts, are commonly ob- served within the granodiorite. They are thought to cut the volcanics as well but have not been recognized because of their similar appearance.

All of the above rock types are cut by later quartz veins and an east-west trending mineralized shear zone which has been traced for approximately 550 metres. The shear zone has been mineralized with quartz, pyrite, and traces of sphalerite and chalcopyrite. Although the shear zone cuts the volcanics, the mineralized quartz portion does not. Typically, the mineralized zone contains clay gouge on both sides of a highly fractured quartz vein that is up to 1 metre wide but average 0.3 to 0.4 metres. An alteration halo, from 3 to 10 metres, surrounds the vein and consists of a hard, grey, mottled, pyritized and fine-grained mass, interpreted as a being a silicified shear breccia. Traces of sericite were also observed.

In 1979, Amore Mineral Inc. completed a program of rock sampling and a ground electromagnetic survey on the area as the AU claims. A chip sample (13572) over 0.72 metres of quartz vein, massive pyrite and quartzose rock around the vein assayed 57.3 grams per tonne gold and 32.3 grams per tonne silver (Assessment Report 07392).

In 1980, Multinational Resources completed a program of prospecting and rock sampling. The best sample assayed was of fractured quartz vein material and yielded 59.5 grams per tonne gold over 0.4 metres (sample 86238; Assessment Report 08242)

In 1983, Teck Ex. completed a program of soil and rock sampling, geological mapping, a magnetometer survey and seven “winkie“ diamond drill holes, totalling 174.8 metres. A drill hole section, 14.3 to 15.1 metres depth from drill hole 7, assayed 19.6 grams per tonne gold over 0.8 metres. Another section from 23.6 to 24.1 metres of the same hole assayed 20.9 grams per tonne gold over 0.5 metres (Assessment Report 12725).

In 2002, W. Guppy prospected the area as the Eastrim property.

Bibliography
EMPR ASS RPT *7392, *8242, *12725, 26921
EMPR BULL 55
EMPR EXPL 1979-129; 1980-169; 1983-198
EMPR FIELDWORK 1988, pp. 61-74
GSC MAP 17-1968; 1386A
GSC OF 463
GSC P 68-50; 72-44
GCNL #202,#238, 1983; #90, 1984
Carson, D.J.T. (1968): Metallogenic Study of Vancouver Island With
Emphasis on the Relationships of Mineral Deposits to Plutonic
Rocks, Unpublished Ph.D. Thesis, Carleton University
EMPR PFD 830766, 831028, 831075

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