The Jun showing is located at 2190 metres elevation, 4 kilometres northwest of Snowy Mountain, 16 kilometres to the southwest of Keremeos, British Columbia.

Regionally, the Jun showing is underlain by argillite and chert of the Carboniferous to Triassic Shoemaker Formation and overlying greenstone, breccia and intrusions of the Carboniferous to Triassic Old Tom Formation. These have been intruded by the Middle Jurassic Similkameen and Jurassic Kruger intrusions.

Locally, the Old Tom Formation was subdivided texturally into massive tuff or basalt, hornblende porphyroblastic greenstone and amphibolite. The Kruger intrusion consists predominantly of a dioritic phase at the Jun showing but lesser porphyritic monzonite is also found. The above rock types are intruded by numerous pegmatite, micropegmatite and microdiorite dikes. Surrounding country rocks have deformed and thermally metamorphosed up to high-grade hornblende hornfels facies by the Similkameen and Kruger intrusions.

The showing was staked and explored briefly during 1975 by Canadian Occidental Petroleum Ltd. The exploration program consisted of geological mapping and rock, soil and stream sediment geochemical sampling.

Hostrocks are mainly cherts, argillite and greenstone of the Shoemaker and Old Tom formations. Thermal contact metamorphism from intrusion of the Similkameen and Kruger intrusions has produced a hornfelsed aureole up to 300 metres wide. Pyrite and copper-zinc mineralization was discovered in greenstone and skarn lenses.