The Cat occurrence is found approximately 1.3 kilometres south of Germansen Lake. Quartz veins are found in shales, siltstones, and greywacke/sandstones of the Middle to Upper Triassic Slate Creek Formation (the basal part of the Middle Triassic to Lower Jurassic Takla Group). These east-striking sediments have been intruded by the Cretaceous Germansen Batholith several hundred metres to the south.

This showing comprises white to milky quartz veins up to 1.5 metres in thickness in clusters of 5 to 10 over a thickness of 2 to 10 metres. These veins are found in fault and shear zones of the hornfelsed sediments, are roughly east-striking, and occur as pods, discrete veins or irregular swarms. Only traces of sphalerite were reported on the Cat claims. Pyrite and pyrrhotite occur extensively within the mineralized zone.

In 1984, 10 chip samples of the Cat occurrence taken along rusty mineralized zones returned low analytical values for gold, silver, and copper.