The NW Block 560 showing area is underlain by sedimentary and volcanic rock of the Upper Triassic Stuhini Group. The stratigraphy is intruded by Early Jurassic monzodiorite to gabbro of the Texas Creek Plutonic Suite and Eocene granite of the Major Hart Pluton. Further west, the area is underlain by Devonian to Permian sedimentary rocks of the Stikine Assemblage.

In 2015, a patchy pyrite-mineralized diorite, with up to 10 percent pyrite, occurs in a 0.5 metre zone. This zone also has increased east-west epidote veining throughout, dipping steeply north. A sample assayed 0.16 per cent copper and 1.13 grams per tonne silver (Sample 1430560, Assessment Report 35925).

See NW Block E597559 (104G 392) for related geologic details and a common work history.