The Shannon occurrence is located on the south side of “A” Creek, at an elevation of 800 metres and approximately 700 metres east of its confluence with Raffuse Creek

The area is underlain by a roof pendant that consists of andesitic lapilli tuff of the Lower Cretaceous Gambier Group and outcrops over a 400 by 200 metre area. The pendant occurs in Upper Jurassic granodiorite of the Jurassic to Tertiary Coast Plutonic Complex.

Locally, at least two shear zones, up to 1.5 metres wide and approximately 200 metres apart, contain quartz veins and lenses, up to 5 centimetres wide. The veins are mineralized with pyrite, chalcopyrite, sphalerite and galena.

In 1981, a select sample (No. 418) from the western shear assayed 0.45 per cent copper, 3.60 per cent zinc, 29 grams per tonne silver and 0.48 gram per tonne gold, while a select sample (No.413) from the eastern shear assayed 0.11 per cent copper, 7.60 per cent zinc, 15 grams per tonne silver and 1.90 grams per tonne gold (Assessment Report 9120).

In 1982, a sample (E274) of a 5- centimetre wide vein from the western shear, assayed 0.50 per cent copper, 4.06 per cent zinc and 0.16 per cent lead (Assessment Report 11052). A 1.0- metre chip sample (E282) from the eastern shear assayed 0.61 per cent zinc and 6.0 grams per tonne silver from a zone quartz-pyrite veining, while another chip sample (E284) across a 10- centimetre shear zone with a 2- centimetre quartz, galena, sphalerite and pyrite vein assayed 1.20 per cent zinc, 0.67 per cent lead and 4.0 grams per tonne silver (Assessment Report 11052).

During 1980 through 1982, Alpen Exploration completed programs of rock, soil and silt sampling, prospecting and a ground magnetometer survey and on the area as the Shannon and Kathryn claims.