The No. 18 showing is located 450 metres west of Wolfe Creek and 13.5 kilometres south of Princeton.

The area is underlain by the eastern facies of the Upper Triassic Nicola Group, comprising mafic augite and hornblende porphyritic pyroclastics and flows. These rocks are intruded by diorite and monzonite, locally pyroxenite and gabbro, of the Early Jurassic Copper Mountain and Lost Horse intrusions.

The showing is underlain by massive and fragmental andesite of the Nicola Group. The Nicola Group volcanics were previously included with the Wolf Creek Formation (Geological Survey of Canada Memoir 171). These rocks commonly contain pegmatite veins, and are intruded by several large, north-striking, post-Early Cretaceous quartz feldspar porphyritic felsite dykes ("Mine Dykes"), and smaller andesitic dykes.

The andesite is irregularly mineralized with chalcopyrite and pyrite in two tunnels, totalling 150 metres in length. Patchy copper mineralization is also exposed in nearby trenches. The sulphides are associated with orthoclase, epidote, zoisite and sericite. The richer areas of mineralization are estimated not to contain more than 1 per cent copper (Geological Survey of Canada Memoir 171, page 37). Gold and silver values are reported to be associated with this mineralization (Minister of Mines Annual Report 1908, page 128).

This showing was initially explored some time between 1906 and 1934. Cumont Mines Ltd. carried out trenching, percussion drilling and soil and geophysical surveys in 1968 and 1969. Nufort Resources Inc. (formerly Cumont Mines) conducted 440 metres of trenching in 1977. Newmont Exploration of Canada Ltd. completed soil and magnetometer surveys over the showing in 1987. The deposit was most recently drilled in 1990 by Similco Mines Ltd., operator of the nearby Similco (Copper Mountain) mine (092HSE001) to the south.