The NW3 area is underlain by Devonian metadsedimentary and metavolcanic rocks of the Stikine Assemblage. The Devonian Forrest Kerr Pluton is in contact the immediate west of the Stikine rock. Plutonic rocks consist primarily of Late Devonian granite and diorite.

Locally, a 5-metre wide silicified shear zone, dominated by grey to limonitic gouge hosts pyrite and chalcopyrite.

A rock sample assayed 0.4 gram per tonne gold and 0.035 per cent copper (Assessment Report 20562, Figure 66). A nearby float sample assayed 1.1 per cent copper and 1.3 grams per tonne gold (Assessment Report 20562, Figure 66).

Refer to the Forrest occurrence (104B 380) for a common work history of the Forrest Property.