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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  17-Dec-2012 by Karl A. Flower (KAF)

Summary Help Help

NMI 092F4 Au2
Name SYOUTL, MW 46, HAMATSA, KEEHA, TWIN PEAK Mining Division Alberni
BCGS Map 092F011
Status Prospect NTS Map 092F04W
Latitude 049º 11' 11'' UTM 10 (NAD 83)
Longitude 125º 49' 53'' Northing 5452036
Easting 293691
Commodities Copper, Silver, Gold Deposit Types
Tectonic Belt Insular Terrane Wrangell, Plutonic Rocks
Capsule Geology

The Syoutl occurrence is located on the northern slopes of Twin Peaks on Meares Island.

The area is underlain by amphibolite, agmatite, gneiss, limestone, tuff, andesite and quartz diorite of the pre- Jurassic Westcoast Complex. A northwest-elongated quartz diorite stock of the Early to Middle Eocene Tofino Intrusive Suite (formerly Catface Intrusions) lies 2.0 kilometres to the west and granodiorite of the Early to Middle Jurassic Island Intrusions lies 1.0 kilometre east of the occurrence. Small quartz feldspar porphyry dikes are present. A 180 by 200 metre wide explosive breccia, containing fragments of Westcoast Complex rocks, metavolcanics, hornfels, dacite quartz, lies 1.0 kilometre to the west.

The mineralization occurs in a vein and in a skarn lens. The vein contains quartz, carbonate and chalcopyrite, and is about 0.3 metres wide. It has been traced over a strike length of 150 to 180 metres. A sample assayed 21.0 per cent copper, 2.40 grams per tonne gold and 27.43 grams per tonne silver (Assessment Report 2108, Figure 2).

Lenses of skarn occur at a limestone-tuff contact near Twin Creek on the MW 46 claim, and contain pyrrhotite, pyrite and chalcopyrite over 0.9 to 1.2 metres. A sample assayed 161.63 grams per tonne silver and 4.3 per cent copper (Assessment Report 2108, Figure 2).

The area was originally explored in the 1890's, with work focusing on the nearby Kallapa (MINFILE 092F 077) deposit. In 1969, the showing was claimed under the MV Group and a program of line-cutting, geochemical sampling, prospecting and geological mapping was completed. In 1979, the Keeja and Twin Peak claims were staked by Double Eagle Energy and Resources and a soil geochemical survey was completed.

Bibliography
EMPR ASS RPT *2108, 8002
Falconbridge File

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