The Lemjay copper showing is provisionally located in the centre of the Lemjay claims, 4.5 kilometres northwest of Racing River, 8 kilometres east of Yedhe Mountain in the Muskwa Ranges in the Northern Rocky Mountains (1967 claim map).

The occurrence is in a region known as the Muskwa Anticlinorium, a major north-northwest–trending structure characterized by moderate folding and thrust faulting. The structure consists of Middle Proterozoic (Helikian) rocks of the Muskwa Assemblage, as well as Paleozoic rocks (Geological Survey of Canada Map 1343A; Geological Society of America, Geology of North America, Volume G-2, pages 111, 639). All belong to Ancestral North America (Geological Survey of Canada Map 1713A).

No specific geological description is available. One brief reference is in Assessment Report 1042, which deals with a number of other claim groups north of Delano Creek. In describing a pair of electromagnetic anomalies in the Goat claim group (which abuts the Lemjay claims), the report states that they are "on strike with the Lemjay showings, which contain economic deposits of copper ore .... in a monoclinal fold in quartzite sediments" (Assessment Report 1042, page 6). Its location would suggest that the quartzite is part of the Tuchodi Formation of the Muskwa Assemblage (Geological Survey of Canada Memoir 373). Alternatively, the quartzite could be a minor component of the unconformably overlying Ordovician Kechika Group, which is also present in the claim group area.

The occurrence also appears as the northwest-striking, chalcopyrite-bearing “Lemjay vein” on a regional map in an unrelated report, although the mineralization or setting are not described at all (R.S. Adamson [1971]: Property File - Report on the Ram Creek property).

Work History

In 1966, Racing River Mines Ltd. completed a program of geological mapping and a ground electromagnetic survey on the area as the Billy, Kid, Nanny and Sam claims.

In 2005, Twenty-Seven Capital Corp. completed a regionally extensive program of geochemical (rock, silt and soil) sampling and a 9002.0 line-kilometre airborne magnetic survey on the area as the Muskwa property (Assessment Report 28281).

Also in 2005, Action Minerals Inc. and Aries Resource Corp. completed a program of prospecting on the area as the Goat claims of the Trident Copper project.