Various copper showings occur just south and east of the summit of Olivine Mountain, 9 to 10 kilometres southwest of Tulameen. The Jenson's showings are hosted in pyroxenite of the Early Jurassic Tulameen Ultramafic Complex.

Mineralization occasionally occurs in north and west-trending shears within the pyroxenite. The north-trending shears contain quartz veins sparsely mineralized with pyrite, chalcopyrite and pyrolusite. The west-trending shears contain chalcopyrite along cleavage planes; chalcopyrite is also disseminated in the pyroxenite in the vicinity of the mineralized planes. Individual chalcopyrite grains are in part embedded in pyroxene crystals, suggesting some of this mineralization may be of magmatic origin.

Samples taken across the north-trending shears assayed trace gold and silver and 0.5 per cent copper (Minister of Mines Annual Report 1917, page 208).

A grab sample from a quartz vein with malachite and chalcopyrite assayed 0.115 per cent copper and 1.3 grams per tonne silver (Assessment Report 16125, Appendix 1).

Assays from the west-trending shears have ranged up to 3 per cent copper (Geological Survey of Canada Memoir 26, page 159).

Work History

The showings were prospected and trenched between 1912 and 1917. D.K. Platinum Corporation conducted rock and soil sampling over the area in 1987. In 2016, Rain City Resources Ltd. completed a program of prospecting and rock sampling on then area as the Northern Champion property.