The Jon showing is situated on the west side of Chilliwack Lake, approximately 2 kilometres north of the head of the lake and at an elevation of approximately 855 metres.

The area is underlain by medium- to coarse-grained biotite granodiorite of the Oligocene to Miocene Chilliwack Batholith.

Locally, an approximately 300 metre wide, northeast-trending, medium- to fine-grained aplite body appears to cut the granodiorite in the vicinity of the showing and contains quartz veins, fracture fillings and disseminations that carry molybdenite, chalcopyrite and pyrite. In 1980, two samples (28452 and 28453) assayed up to 0.06 per cent copper and 0.007 per cent molybdenum (Assessment Report 8052).

Exploration in 1966 included 55 silt samples and 101 soil samples. Limited work occurred during 1968 including reconnaissance geological mapping. Some stripping and 3.6 metres of trenching occurred in 1969. Midnapore Oil, later Midnapore Resources Inc., carried out more silt and soil sampling as well as some geological mapping in 1980 and 1981.