The Yak occurrence is located on the west side of a ridge crest about 8.6 kilometres northwest of Tenakihi Lakes and approximately 73 kilometres northwest of the community of Germansen Landing.
At the showing, fine and coarse-grained monzonite of the Early Jurassic Hogem Plutonic Suite is cut by numerous small ankerite veins in a zone 5 to 6 metres in width. Chalcopyrite, malachite and azurite are disseminated throughout the zone and coat fracture surfaces. Local mafic segregations in the monzonite are more strongly mineralized than the felsic sections. The zone strikes approximately 130 degrees and can be traced for 50 to 70 metres to the east and apparently 400 metres to the northwest across a small cirque into the Koala occurrence (094C 114).
In 1991, a grab sample of ankerite-altered monzonite assayed 1.52 per cent copper (Open File 1992-11, Map Number 34, Sheet 2).
Work History
Major General Resources (later renamed Commander Resources Ltd.) staked the Mate claims over the area in the early 1990s. In 1991, claims operator Swannell Minerals Corp. conducted a program of reconnaissance mapping and rock and silt sampling. Four rock samples from a zone on the Mate 1 claims assayed greater than 0.2 per cent copper. Swannell’s 1991 work encompassed several MINFILE showings on the Mate claims including the Yak occurrence. Several locations were discovered during the 1991 regional mapping program of the British Columbia Geological Survey. In 1992, follow-up work by Swannell included geological mapping, and soil and rock sampling. Soil sampling was performed over the previously identified copper anomaly.
In 2012, Commander Resources Ltd. completed in-fill sampling of previous geochemistry work on their Mate property which covers the Yak showing. A total of 10 soil samples, 5 rock samples and 3 stream silt samples were taken and analyzed.
In 2020, Interra Copper Corp. completed a program of geological mapping, geochemical (rock, soil and stream sediment) sampling and a 14.0 line-kilometre induced polarization survey on the area as the Thane property.
See Matetlo (094C 018), located 875 metres southwest of the Yak showing, for further details of a common work history.
