The claim is underlain by Lower to Middle Jurassic Hazelton Group volcanics comprised of andesitic flows, tuffs, and breccia. On the south side of the basin a shear, between 1443 to 1555 metres in elevation, hosts a mineralized quartz vein and is referred to as Empire #1. A selected high grade sample of galena and sphalerite from the 30 centimetre wide quartz vein assayed 2.05 grams per tonne gold, 7096 grams per tonne silver, 25.3 per cent lead, and 18.6 per cent zinc (1914) (Minister of Mines Annual Report 1914, page 225).

At elevation 1443 metres, an adit was driven along the shear which consisted of a 90 to 120 centimetre altered fracture zone with a well mineralized 8 to 30 centimetre quartz-sulphide vein with gouge along the footwall. The fracture eventually pinches out and reappears on the hanging wall to the south. The shear vein continues with little fracturing and consists of galena, sphalerite, arseno- pyrite with minor chalcopyrite, and tetrahedrite. In 1986, five chip samples were collected and assayed 0.6 to 3.3 grams per tonne gold, 57.9 to 1450 grams per tonne silver, 0.32 to 9.74 per cent lead, 0.22 to 8.47 per cent zinc with minor copper and cadmium values (Assessment Report 15140).

The Empire #1 shear vein is hosted in hornfelsed, fine-grained maroon to grey tuff. Recessive weathering shows the zone to be 30 metres wide and striking 160 degrees and dipping 80 degrees west. Manganese staining is common.

In 1914, three tonnes of ore was shipped from the Empire #1 workings and produced 20,030 grams silver and 699 kilograms lead.

On the northwest side of the basin, a mineralized vein referred to as Empire #2, strikes 310 degrees and dips 50 degrees west. The vein consists of 8 to 30 centimetres of silicified wall rock with quartz and abundant pyrite-galena-sphalerite and arsenopyrite. In 1986, three chip samples were taken across the vein as well as a high grade sample from the dump and assays ranged between 1.03 to 4.46 grams per tonne gold, 213.9 to 1292 grams per tonne silver, 7.5 to 36.67 per cent lead, 10.49 to 34.01 per cent zinc, 0.26 to 0.36 per cent copper, 0.07 to 0.23 per cent cadmium, and 0.02 to 0.12 per cent antimony (Assessment Report 15140).