The showing is underlain by Lower Jurassic Hazelton volcanics (Telkwa Formation) comprised mainly of a uniform, fine-grained maroon tuff overlain by a sequence of tuff, lapilli tuff, tuffaceous greywacke and argillite. The tuffs range from dark grey to green to maroon and are fine-grained, thinly bedded, laminated or massive. These are overlain by massive dark green andesitic to dacitic flows.

The volcanics are altered hosting mica, chlorite, and clay minerals with less common, epidote.

The Hazelton rocks are intruded by a series of feldspar porphyry dikes trending north-northwest and west ranging between 30 to 70 metres in width. Basic lamprophyre dikes also crosscut the volcanics.

The Joe B showing consists of a 22.9 centimetre wide quartz vein striking 355 degrees and dipping 20 degrees southeast. The vein is mineralized with tetrahedrite and secondary malachite. In 1928, a sample across 22.9 centimetres assayed trace gold, 548.56 grams per tonne silver and 0.7 per cent copper (Minister of Mines Annual Report 1928, page 169).