The Mercer occurrence is located on the south western slope of Mount Demers, approximately 1.75 kilometres southeast of Maid Lake.

The area is underlain by intrusive rocks, primarily quartz diorite and diorite, of the Paleozoic to Jurassic Westcoast Crystalline Complex.

Locally, areas of skarn host sulphide mineralization, primarily magnetite, pyrite and chalcopyrite. In 2006, grab samples assayed up to 29.6 per cent zinc, 35.95 per cent iron, 10.5 grams per tonne silver and 0.476 gram per tonne gold (Assessment Report 28635).

In 2011, a rock sample (11DMAO002) of quartz vein with disseminated pyrite assayed 0.19 gram per tonne gold, and greater than 1.0 per cent zinc (Assessment Report 33846).

During 2006 through 2012, the area was prospected and sampled as the Maid 1-2 claims.