The Jo Jo occurrence is located on the eastern side of the Kennedy River, between Golden Gate and Canyon creeks.

Upper Triassic andesites and andesitic breccia and tuffs of the Karmutsen Formation, Vancouver Group are intruded by quartz diorite to granodiorite of the Early to Middle Jurassic Island Plutonic Suite and Tertiary dacitic dikes. The rocks are cut by northwest trending faults which typically show intense shearing and local sericitization, silicification and pyritization over widths of 0.5 to 2 metres.

A quartz vein, about 60 centimetres wide, strikes 040 degrees through volcanics, sediments and granodiorite; one report gives a 065 degree strike. The quartz is mineralized with pyrrhotite, pyrite, and lesser amounts of chalcopyrite, sphalerite, and traces of galena. The vein has been traced on surface for "several hundred feet". A sample across some of the best looking ore contained only small per centages of zinc and copper; gold and silver were absent (Minister of Mines Annual Report 1927). The vein shares some characteristics with the VRL-10 vein (092F 480).

In 1983 and 1984, Rich Lode Gold Corp. completed programs of geochemical sampling, prospecting and geological mapping on the area. In 1984 and 1985, Int. Phoenix Energy completed programs of geochemical sampling, geological mapping, trenching and ground magnetic and electromagnetic surveys. In 2009 and 2010, G4G Resources Limited completed a program of prospecting and remote sensing, consisting of spectral analysis and synthetic aperture radar analyses, on the area as the G4G property.