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File Created: 08-Dec-1987 by Garry J. Payie (GJP)
Last Edit:  21-Aug-2020 by Karl A. Flower (KAF)

Summary Help Help

NMI
Name COLUMBIA II, COLUMBIA, MAIN Mining Division Nanaimo, Victoria
BCGS Map 092F008
Status Showing NTS Map 092F02E
Latitude 049º 00' 59'' UTM 10 (NAD 83)
Longitude 124º 34' 29'' Northing 5430472
Easting 384861
Commodities Copper, Silver, Gold Deposit Types I06 : Cu+/-Ag quartz veins
Tectonic Belt Insular Terrane Wrangell
Capsule Geology

The Columbia II showing is located 27 kilometres southeast of Port Alberni.

The area is underlain by Sicker Group rocks of the Devonian Nitinat Formation and the Upper Devonian McLaughlin Ridge Formation which occur along the western part of the Cowichan uplift. The dark coloured volcanics consist of massive and pillowed basalt and agglomeratic flow-breccia with minor chert and jasper. Small patches of epidote, and lesser amounts of quartz are common throughout the sequence, as is a pervasive "uralization" alteration, which is distinctive of the Nitinat Formation. This gives the rocks a dark spotted appearance due to the pseudomorphing of diopside by actinolite. These rocks are steeply dipping and become younger to the west. The metamorphic grade is usually low greenschist.

Locally, quartz veins up to 20 centimetres wide with subordinate amounts of epidote and carbonate occur in a silicified shear zone. This shear zone (Main zone) is about 50 metres wide and trends north-northwest through basalts for 2 kilometres. Chalcopyrite and pyrite is found disseminated and in fractures locally within these veins and in silicified wallrock.

A grab sample containing semi-masive sulphides in altered basalt assayed 0.96 per cent copper, 2.7 grams per tonne silver, 0.062 grams per tonne gold, and 0.01 grams per tonne platinum and palladium (Assessment Report 17769).

In 2017, a sample (1731) assayed 1.91 per cent copper and 3.5 grams per tonne silver (MacIntyre, D. (2017-10-12): Amended Technical Report - Columbia Shear Mineral Property).

Work History

The area was first explored by Gunnex Ltd. between 1963 and 1966. This work involved regional silt sampling and prospecting. Between 1985 and 1987, JBL Resources completed programs of geological mapping, geochemical sampling, prospecting and VLF-EM and magnetometer surveys on the area as the Kitkat claims. In 2011, Gold Ridge Explorations Inc. completed a regional program of litho-geochemical sampling, helicopter-borne versatile time domain electromagnetic (VTEM) and aeromagnetic geophysical surveys, totalling 34 square kilometres, on the area as the Columbia Shear property. In 2012 and 2013, Golden Peak Minerals Inc. completed programs of geological mapping, geochemical (soil, rock and silt) sampling and a 24.35 line-kilometre ground magnetometer survey on the area. In 2017, New Point Exploration Corp. completed a program of rock, soil, silt and moss mat sampling on the area as the Columbia Shear property.

Bibliography
EMPR ASS RPT *16167, *17769, 32811
EMPR BULL 37
EMPR FIELDWORK 1988 pp. 61-74
EMPR OF 1987-2, 1988-24, *1989-6
EMPR PF (in 092F 463: Payton Ventures Inc. Prospectus March 31, 1987)
GSC MAP 49-1963, 17-1968
GSC OF 463, 1272
GSC P 68-50; 72-44; 79-30
CIM BULL Vol. 83 No. 935, March 1990 pp. 125-135
MacIntyre, D. (2012-11-08): Technical Report - Columbia Shear Property
MacIntyre, D. (2017-07-14): Technical Report - Columbia Shear Mineral Property
*MacIntyre, D. (2017-10-12): Amended Technical Report - Columbia Shear Mineral Property

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