The North Copper showing is 1.6 kilometres north-northeast of the summit of Boulder Mountain and 8.5 kilometres north-northwest of Tulameen.
This showing is hosted in chlorite schist and andesite (greenstone) of the Upper Triassic Nicola Group. These rocks are variably silicified, sheared and brecciated. They are cut by steeply-dipping quartz veins and stringers striking northeast and northwest.
The northeast-striking quartz veins are moderately mineralized with chalcopyrite in an area of brecciation and pyritization. A sample of chlorite schist with chalcopyrite assayed 0.14 gram per tonne gold, 38.7 grams per tonne silver, 2.94 per cent copper, 0.02 per cent lead and 0.80 per cent zinc (Assessment Report 14158, assay certificate, sample R2 BWS Rx 35).