The Shadow occurrence is located on an unnamed tributary south of Lay Creek, approximately 9.5 kilometres southeast of Johanson Lake.

The area is underlain the Middle Triassic to Lower Jurassic Takla Group sequence (Quesnel Trough), dominated by alkalic to subalkalic dark green tuffs, andesitic to basaltic volcanic breccias and flows of similar composition. These volcanic rocks are intruded by syenite, monzonite, monzodiorite and diorite plugs and stocks.

Locally, a rusty zone greater than 1200 metres long by 500 metres wide occurs in dioritic plugs and andesite that are variously chloritized and epidotized with disseminated and fracture-controlled pyrite and pyrrhotite.

In 2004, Serengeti Resources completed a program of stream sediment and rock sampling. Rock samples from the altered zone returned up to 0.1 per cent copper and 1.34 grams per tonne gold. The sampled rocks consisted of rusty, pyritic, chloritized diorite with epidote veinlets (Assessment Report 27872).