The Shadow showing is hosted in rocks of the Lower Jurassic Telkwa Formation, Hazelton Group. A small Eocene stock of the Coast Plutonic Complex intrudes the strata to the immediate southwest of the area. Extensive masses of quartz diorite of the Middle Jurassic Trapper Plutonic Suite intrude to the north, west and south.

The Shadow showing consists of at least three sulphide-oxide bearing stratabound bands/beds of 1 metre or less which can be followed along strike for approximately 200 metres. Mineralization varies in composition and concentration both laterally and vertically. Pyrrhotite, magnetite, chalcopyrite and pyrite with local galena and sphalerite occur as disseminations to near massive pods. Chalcopyrite, however, never constitutes more than 5 per cent of the rock and lead-zinc sulphides are even lower. The enveloping hostrocks are bedded to laminated siliciclastic to epiclastic siltstones-sandstones with minor chert horizons that appear to be restricted to the very margins of the massive oxide-sulphide bands. The gangue assemblage in the oxide-sulphide bands consists of coarse rosettes and blades of hornblende with grainy poorly formed interstitial red-yellow garnet, quartz and various oxides and sulphides. Retrograde chlorite is also present throughout the area. This mineral assemblage is that of a skarn. The intrusive responsible expresses itself as northeast trending crowded (feldspar phyric) porphyry dikes which cut through the mineralized bands. Hornfelsing occurs as random to aligned egg-shaped spots and thin bedding-parallel bands.

One of the best samples yielded 3.46 per cent copper, 0.17 per cent zinc and 118 grams per tonne silver and 8.58 grams per tonne gold (Assessment Report 29585). The elevated gold values correspond with the rather common massive pyrite zones.

Refer to New Moon (093E 011) for related geological and work history details of those showings such as the Shadow showing that occur on the New Moon property.