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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  07-May-2020 by Karl A. Flower (KAF)

Summary Help Help

NMI 093L11 Cu4
Name IDAHO, MOHOCK, HUNTER BASIN, EL TORO Mining Division Omineca
BCGS Map 093L055
Status Showing NTS Map 093L11E
Latitude 054º 31' 37'' UTM 09 (NAD 83)
Longitude 127º 09' 59'' Northing 6043699
Easting 618663
Commodities Copper, Silver, Gold Deposit Types I06 : Cu+/-Ag quartz veins
L01 : Subvolcanic Cu-Ag-Au (As-Sb)
D03 : Volcanic redbed Cu
Tectonic Belt Intermontane Terrane Stikine
Capsule Geology

The claims are underlain by Lower Jurassic Hazelton Group volcanics comprised of andesitic to rhyolitic flows, tuffs and breccia with minor intercalated sediments. South of the claims a Late Cretaceous to Eocene quartz-feldspar porphyry stock intrudes the volcanics with associated felsite dikes.

The Idaho workings at elevation 1623 metres, consists of a 2.5 metre hole in amygdaloidal andesite which hosts minor bornite and chalcopyrite. To the south, a quartz vein up to 30 centimetres in width strikes 055 degrees and dips steeply southeast. Mineralization consists of bornite over 2.5 to 10 centimetres width on the hanging- wall.

The Mohock adjoins the Idaho farther up the hill. The Mohock showing is a breccia zone striking 095 degrees in highly chloritized, green andesite. The reddish, brecciated dike rock hosts disseminated bornite and chalcopyrite across a width of 1.2 to 1.5 metres. In 1914, a sample taken across 1.0 metres assayed 2.7 grams per tonne gold, 706.3 grams per tonne silver and 5.4 per cent copper (Minister of Mines Annual Report 1914, page 219).

WORK HISTORY

In 2007, Lions Gate Energy Corp conducted an Aerotem airborne geophysical survey on parts of the El Toro property which also covered the Hunter Basin area that included Idaho (093L 040), King (093L 041), Hunter (093L 042), Colorado (093L 043), Rainbow (093L 044), Tribune (093L 255) and Hannah (093L 080).

The 2008 El Toro program of Lions Gate Energy Inc conducted 1495 line kilometre airborne magnetic and electromagnetic geophysical survey covered the Hunter Basin area that included Idaho (093L 040), King (093L 041), Hunter (093L 042), Colorado (093L 043), Rainbow (093L 044), Tribune (093L 255) and Hannah (093L 080). A sample (14551) from the Idaho occurrence area assayed 30.6 per cent copper, 1.79 grams per tonne gold and 1886 grams per tonne silver (Pautler, J. (2009-07-15): Technical Report on the El Toro Project).

The actual Idaho showing was relocated in 2009 and sampled. The sample yielded 3.3 per cent copper, 1.19 gram per tonne gold and 46.5 gram per tonne silver from quartz veinlet type mineralization (sample 13513) and 7.78 per cent copper, 2.65 grams per tonne gold and 126 grams per tonne silver from fracture fillings (sample 13514) hosted in amygdaloidal andesite volcanic rocks (Assessment Report 31515). Minor mineralization was traced for 125 metres at 065 degrees, but generally appeared narrow.

Refer also to King (093L 041) for further information on Hunter Basin and the El Toro property.

Bibliography
EMPR AR 1904-102; 1905-84; 1908-64; 1909-85; 1911-112; *1914-219; *1925-140
EMPR FIELDWORK 1988, pp. 195-208
EMPR MAP 69-1
EMPR OF 1989-16
GSC MAP 971A
GSC OF 351
GSC P 44-23
GSC SUM RPT 1906, p. 40; 1915, p. 64
*Pautler, J. (2009-07-15): Technical Report on the El Toro Project
EMPR PFD 15541

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