The KM (Glacier Sill) occurrence is located near the toe of a glacier, north of Kitsgegas Peak and approximately 2 kilometres east of Kitsgegas Lake.

The area is underlain by shale, slate, siltstone and sandstone of the Middle Jurassic to Lower Cretaceous Bowser Lake Group. These are intruded by quartz diorite and/or diorite and/or granodiorite dikes, sills and plugs of the Late Cretaceous Bulkley Plutonic Suite.

Locally, a micro-granodiorite sill-like intrusive hosts quartz +/- ankerite veining approaching 5 per cent of the total volume of the host. The veins typically range from 3 to 30 centimetres in thickness and have limited extent, rarely traceable over a few metres. The veins are typically composed of milky quartz +/- coarse-grained ankerite (to 30 per cent) and contain up to 30 per cent combined blebby, coarse-grained sulphides. In decreasing order of abundance, veins typically contain blebby galena and pyrite, and lesser chalcopyrite and sphalerite.

In 1987, a sample (51503) of sub-crop or talus boulder assayed 1.54 grams per tonne gold, 670.0 grams per tonne silver, 0.119 per cent copper, 6.20 per cent lead and 1.80 per cent zinc, while an outcrop sample (51509) assayed 0.12 gram per tonne gold and 380 grams per tonne silver (Assessment Report 17542; Thomson, G.R. (2009-10-15): Technical Report on the KM Property).

See Kisgegas (093M 126) occurrence for details of the KM property work history of which the KM (Glacier Sill) area was part of.