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File Created: 31-Aug-1987 by Laura L. Coughlan (LLC)
Last Edit:  27-Nov-2014 by Laura deGroot (LDG)

Summary Help Help

NMI
Name MIKE, NTI Mining Division Victoria
BCGS Map 092C100
Status Prospect NTS Map 092C16E
Latitude 048º 55' 09'' UTM 10 (NAD 83)
Longitude 124º 05' 05'' Northing 5419037
Easting 420533
Commodities Gold, Silver, Copper Deposit Types I06 : Cu+/-Ag quartz veins
Tectonic Belt Insular Terrane Wrangell
Capsule Geology

The Mike showing is located in the Chemainus River valley, between Meade Creek and Chemainus River, near the Rheinhart Creek junction, approximately 28 kilometres northwest of Duncan.

The area is underlain by pyroclastics and sediments of the Paleozoic Sicker Group and the Mississippian to Permian Buttle Lake Group. These have been intruded by Triassic gabbros and Early to Middle Jurassic Island Plutonic Suite granodiorites to quartz diorites. The gabbroic sills and dykes are thought to be coeval with Upper Triassic Karmutsen Formation basalts and are informally referred to as the Mount Hall gabbro. The sediments and pyroclastics are silicified and hornfelsed near the intrusive contact.

The Sicker Group on the Mike property is comprised of cherty tuffs to agglomerates of the Upper Devonian McLaughlin Ridge Formation. The Buttle Lake Group comprises chert, argillite, siltstone, sandstone, conglomerate and minor limestone with pyroclastic flows of the Mississippian to Pennsylvanian Fourth Lake Formation, and limestone, marble with minor chert, argillite and sandstone of the Upper Pennsylvanian to Lower Permian Mount Mark Formation. The contacts between these formations appear to be fault related. The rocks are weakly regionally metamorphosed, probably to lower greenschist facies, and are folded along a northwest trending fold axis.

Mineralization occurs in east trending shears and quartz veins hosted in the Mississippian to Pennsylvanian Fourth Lake Formation fine-grained sediments and the Triassic gabbro dykes. Quartz veins, up to 1.0 metre in width, contain pyrite, pyrrhotite, chalcopyrite, minor arsenopyrite and anomalous gold values (up to 60.0 grams per tonne gold).

The main showing consists of five east trending quartz veins. The uppermost vein is comprised of vuggy, bluish-grey quartz within a shear zone up to 2.0 metres in width striking 098 degrees and dipping 83 degrees southwest.

In 1986, sampling across 1.0 metre, along a strike length of 14 metres, averaged 18.617 grams per tonne gold (Assessment Report 15578). Sampling of the four other quartz veins ranged from 1.1 to 27.09 grams per tonne gold (Assessment Report 15578).

A 10 centimetre wide shear zone, striking 133 degrees and dipping 65 degrees northwest cuts silicious siltstone and is mineralized with pyrrhotite and pyrite. Up to 0.5 per cent copper with low gold, silver, cobalt and tungsten values were obtained.

An area containing quartz veins, well-mineralized with pyrite and chalcopyrite, is located near the gabbro dyke associated with the gold-bearing veins. In 1986, a sample of this vein material assayed 0.2 grams per tonne gold, 3.2 grams per tonne silver, 0.9 per cent copper and 0.17 per cent arsenic (Assessment Report 15578).

In 2010, Rock-Con Resources Inc. completed a program of remote sensing analysis on the area.

Bibliography
EMPR ASS RPT *11347, 12173, *12606, 12909, *15578, 17447, 32885
EMPR BULL 37
EMPR FIELDWORK 1978, pp. 38-40; 1986, pp. 223-229; 1987, pp. 81-91;
1989, pp. 503-510
EMPR MP MAP 1992-2
EMPR OF RGS 24, 1990
EMPR PF (In General File: B.C. Forest Products Road Map, Cowichan
Lake Area, 1963; Prospectors Report 2000-15 by Gordon Henriksen)
GSC MAP 1386A
GSC MEM 13
GSC OF 463; 701; 821; 1272
GSC P 72-44; 76-1A; 79-30
GCNL Dec. 5, 1986
WIN Jan. 1987
Carson, D.J.T. (1968): Metallogenic study of Vancouver Island with
emphasis on the relationships of mineral deposits to plutonic
rocks, Ph.D. Thesis, Carleton University

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