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File Created: 26-Apr-1990 by George Owsiacki (GO)
Last Edit:  30-Nov-2013 by Karl A. Flower (KAF)

Summary Help Help

NMI
Name IDEAL Mining Division Alberni
BCGS Map 092F025
Status Prospect NTS Map 092F06E
Latitude 049º 16' 55'' UTM 10 (NAD 83)
Longitude 125º 01' 45'' Northing 5460780
Easting 352426
Commodities Gold, Copper Deposit Types I06 : Cu+/-Ag quartz veins
Tectonic Belt Insular Terrane Wrangell
Capsule Geology

The Ideal occurrence is located north of Highway No.4 on Sproat Lake, approximately 4.4 kilometres south west of Ward Lake.

The area is underlain by propylitically altered pillowed to massive andesite flows and tuffs of the Upper Triassic Karmutsen Formation (Vancouver Group) intruded by quartz diorite of the Early to Middle Jurassic Island Plutonic Suite. A series of sub- parallel shear/fault zones strike northwest. Locally, small highly deformed shale/slate bands occur between pillows and several of the bands are cut by a stockwork of carbonate veinlets. The propylitic alteration assemblage in the pillow lavas comprise chlorite, local carbonate and pyrite.

Several shear zone structures host quartz veins and appear to be east trending as opposed to the dominant northwest direction. Strong silicification, argillization and local sericitization haloes are noted in some shear zones and larger (greater than 10 centimetre) quartz veins.

The primary vein showing, the Ideal vein, occurs in andesitic volcanics and strikes 125 degrees and dips 62 degrees northeast for a semi-continuous length of 110 metres. Vein widths range from 20 to 50 centimetres and pinches and swells regularly. The andesite is locally well brecciated within the vein channel with no distinctive alteration. Mineralization is concentrated in the quartz and occurs as sulphide pods and disseminations and comprises predominantly pyrite with lesser chalcopyrite and trace arsenopyrite. Malachite and azurite are noted with chalcopyrite.

In 1984, Royalon Petroleum completed a program of prospecting and rock sampling on the area as the Ideal 1-4 claims. Thirteen rock samples were collected from the main vein occurrence and assayed from 0.34 to 9.33 grams per tonne gold over a 750 metres strike length (Assessment Report 13539).

In 1987, Stetson Resources and Metaxa Resources completed a program of prospecting, geological mapping and rock and silt sampling. A rock sample from the vein assayed up to 10.59 grams per tonne gold across 0.4 metres (Assessment Report 17040). Rock sampling from other quartz veins on the property assayed up to 0.68 grams per tonne gold.

Bibliography
EMPR ASS RPT *13539, *17040
EMPR FIELDWORK 1987, pp. 81-91; 1988, pp. 61-74
EMPR PF (Property notes, 1983; Prospectus: Metaxa Resources Ltd.,
Feb. 6, 1989)
GSC MAP 17-1968; 1386A
GSC OF 463
GSC P 68-50
EMPR PFD 7538, 895127

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