The Hanna (West Zone) showing is located in trenches in the upper reaches of Hanna Creek, approximately 2.4 kilometres northwest of Keefers. The location is uncertain from the descriptions and maps (Assessment Report 12028).

The area is underlain by a northwest trending belt of lower greenschist facies Permian(?) to Lower Cretaceous Bridge River Complex (Group) phyllites and schists. These occur in normal and fault contact with Bridge River serpentinized ultramafics, and metasediments of the Lower and Middle Jurassic Ladner Group and the Upper Jurassic-Lower Cretaceous Relay Mountain Group. Late Cretaceous granitic plugs and dykes intrude all of the above.

Graphitic phyllites, fine-grained siltstones and argillites are intensely sheared and fractured in a northwest trending fault zone that is up to 20 metres wide. Intense weathering, decomposed serpentine-carbonate-talc zones and limonite are characteristic.

Argentite occurs sporadically as narrow seams (up to 0.5 centimetres) and blebs (2 to 4 centimetres) in highly fractured quartz veins over a strike length of 250 metres within the fault zone. A rock sample had an assay high of 256.7 grams per tonne silver and 0.06 grams per tonne gold (Assessment Report 12028).