The Copper Canyon occurrence is located at an elevation of approximately 650 metres on a north-northwest–facing slope in the southern headwaters of Canyon Creek, approximately 1.7 kilometres southeast of Comstock Mountain.

Regionally, northwest-striking, moderately west-dipping, calcareous sediments of the Parson Bay Formation overlie Karmutsen Formation tholeiitic basalts, both of the Upper Triassic Vancouver Group. These are overlain by Lower Jurassic Bonanza Group andesitic to rhyodacitic lava, tuff and breccia, which are coeval with or genetically related to Lower-Middle Jurassic Island Plutonic Suite granodiorite, occurring as small, isolated plutons.

Locally, a volcanic tuff hosts a 0.10- to 0.15-metre-wide quartz vein with up to 10 per cent pyrite, sphalerite, chalcopyrite and galena mineralization associated with a fault zone. The vein trends 185 degrees and dips west at 76 degrees.

In 2015, an outcrop sample (YRf-15-09) assayed 1.845 grams per tonne gold, 103 grams per tonne silver, 0.193 per cent lead, 1.515 per cent zinc and 0.254 per cent copper (Assessment Report 36110).

Work History

The area has been explored in conjunction with the Yreka (MINFILE 092L 052) mine and was first staked in 1898. In 1970 and 1971, Green Eagle Mines completed programs of airborne electromagnetic and magnetic geophysical surveys, rock and soil sampling and ground magnetic survey on the area. In 1972, Iso Explorations completed a program of ground geophysical surveys, geological mapping and soil sampling. In 1998 and 1999, Talltree Resources completed programs of rock and soil sampling, geological mapping and a ground electromagnetic survey on the area. During 2015 through 2019, Karmamount Mineral Exploration Inc. completed minor programs of geological mapping and geochemical (rock and soil) and biogeochemical sampling and a 12.9 line-kilometre induced polarization survey on the area as the Yreka property.