The Hat Lake showing is located on the Hat Lake claim group 1.5 kilometres south of Hat Lake on the Germansen-Hat logging road.

The region is underlain by sedimentary and volcanic rocks of the Upper Triassic to Lower Jurassic Takla Group within the Quesnellia Terrane. The group comprises the informally named Inzana Lake, Rainbow, Witch Lake and Chuchi Lake formations.

The Inzana Lake Formation is a sequence of epiclastic sediments derived from a volcanic source. It is underlain by fine grained slates and sediments of the Rainbow Formation derived (in part) from a continental source. In turn, it is overlain by augite porphyry flows and agglomerates of the Witch Lake Formation and the subaerial maroon and green flows of the Chuchi Lake Formation.

Outcrop is best exposed on road cuts and in trenches on the property. Silicified, hornfelsed and fractured black argillite, cherty tuffs and green sandstone of the Inzana Lake Formation contain disseminated pyrite. The sediments are cut by highly variable gabbro and diorite intrusions. Unmineralized gabbroic intrusions, containing between 30 and 90 per cent hornblende phenocrysts, cut the hornfelsed sediments.

In a trench exposure, plagioclase-augite-hornblende diorite contains 10 per cent pyrrhotite and forms an intrusive breccia with earlier gabbroic phases and sediments. These intrusive phases appear very similar to those exposed on the Tas (093K 080) property. Pale quartz-carbonate alteration and a shear zone were also noted near the showing.

Several gold and silver geochemical anomalies are present on the property and one coincides with a 1 metre wide quartz-carbonate stockwork containing minor sulphides. Sulphides at the showing include up to 5 per cent pyrite and pyrrhotite with traces of chalcopyrite (Assessment Report 15943).