The Jim occurrence lies within 5 kilometres of the Coast Crystalline Complex and is underlain by the Upper Triassic Stuhini Group, intruded by Middle Jurassic and younger diorites and grano- diorites.

Seven distinct rock types have been noted on the property and include greenstone within which the feldspars have been epidotized and saussuritized. Accessory minerals include magnetite, pyrrhotite and chlorite. Fine-grained andesitic tuff have had their minor structures obliterated by regional metamorphism. The limestone-shale sequence also contains greywackes with individual bands being less than 1 centimetre. Slickensides and small scale drag folds are abundant in this formation. The diorite, which may be a hypabyssal equivalent of the greenstone, are generally similar but coarser grained than the greenstone. An amphibolite unit has been mapped and is thought to be derived from the greenstone. A granodiorite dyke, about 30 metres wide, has been described as coarse-grained, light coloured holocrystalline rock with rounded basic zenoliths. Several porphyritic dykes, which exhibit a glassy black matrix and moderately coarse-grained phenocrysts of feldspar and quartz, have been observed in the occurrence area.

A zone of alteration, which tends to be sporadic, usually con- forms to the dip and strike of enclosing beds but does exhibit minor independant fluctuations. The altered rock is reportedly a tuff and skarn alteration has been noted in some sedimentary units. The alter- ation consists mainly of epidotization with "associated skarn-type minerals, including garnet". Magnetite, pyrite and chalcopyrite occur within the altered zone. In 1911, gold values of about 64 grams per tonne gold were reported from this area.

In 2006 and 2007, Hathor Exploration Ltd. completed a 7228.7 line-kilometre airborne geophysical survey on the area as the Quillian claims of the Iskut project. In 2008, Max Minerals Ltd. examined the property.