The Marg occurrence is located near the Kokanee-Busk Forest Service Road at an elevation of 960 metres, approximately 2 kilometres north of Crescent Bay on Kootenay Lake.

Regionally, the area is underlain by late Precambrian to Cretaceous volcanic and sedimentary rocks. Jurassic to Cretaceous Nelson and Valhalla intrusives and Tertiary alkalic plutons intrude the volcanic and sedimentary units. The region has been metamorphosed to lower to middle greenschist facies with associated chlorite, epidote, biotite hornfels and minor amphibole. Contact metamorphism related to Nelson and later intrusives occurs in both the volcanics and sediments. Regional structure is dominated by a series of north-northwest–trending tight folds and shears.

In the Kokanee Creek area, Slocan Group basal slates and phyllites with lesser fine-grained quartzite and limestone beds are overlain by well-bedded, arenaceous quartzite argillites with local impure quartzite and limestone. The top of the argillite section is marked by tuffaceous lava beds, likely related to early Rossland Group volcanism. Jurassic Nelson intrusives consist of porphyritic granite, granodiorite, diorite, quartz diorite, monzonite and hornblende syenite. Several smaller alkaline plugs belong to the Tertiary (Eocene) Coryell Batholith.

Locally, a 3-metre wide siliceous zone hosts irregular masses of sphalerite and pyrrhotite. The zone trends north-northeast with a steep dip. Trenches have exposed the mineralized zone over an area of 12 by 6 metres. On the north side of the zone, quartz veins cut fractured garnet-diopside skarn.

In 1967, a composite sample assayed 15 grams per tonne silver and 3 per cent zinc (Property File - Hogan Mines Ltd. [1968-03-18]: Report on the Kit & Kok Mineral Claim Group).

In 1967 and 1968, Hogan Mines Ltd. examined the area as the Kit and Kok claims. In 1980, a program of prospecting and four drillholes was completed on the area as the Sunshine claims, Zig-Zag property. In 1979, Anton Nyhuis staked the Big ‘M’ claim group on the south side of Busk Creek. Nyhuis prospected the claims and collected six soil samples and one rock sample before selling the claims to Robin W. Pearson in January 1980. That summer, Pearson Gallagher Limited conducted a magnetometer survey over the area.

In 1996, the Home claims were staked over the area by Eagle Plains Resources Limited and Miner River Resources Limited as part of the Kokanee Creek property. From 1996 to 1997, Eagle Plains Resources completed silt and soil geochemical surveying, diamond drilling, chip sampling and 3.5 kilometres of horizontal loop electromagnetic geophysical surveying. In 2004, an airborne electromagnetic geophysical survey was flown over the property by Eagle Plains Resources. Fieldwork that year included geological mapping and soil (125 samples) and silt (15 samples) geochemical surveying.