The Copper Crest showing occurs 1.5 kilometres north of Gwunya Creek, 6 kilometres north-northwest of Alice Arm. The area was explored in 1916 for precious and base metal mineralization.

The area is underlain by a sequence of volcanic and sedimentary rocks belonging to the Jurassic Hazelton Group. The sequence is folded into a north-northwest trending anticline/syncline pair and has been regionally metamorphosed to greenschist facies.

The showing appears to be hosted in sediments and andesitic pyroclastics of the Hazelton Group. The showing is reported to consist of red-stained (gossanous?) rocks that contain pyrite, chalcopyrite, sphalerite and galena. An assay of 2198 grams per tonne silver is reported to have come from this occurrence (Minister of Mines Annual Report 1916, page 3).

It is assumed that the style of mineralization at the Copper Crest showing is similar to that of the Silver Wing showing (103P 167) located 675 metres to the north. At the Silver Wing showing, mineralized quartz stringers are hosted in a breccia zone in argillite.