The Moly occurrence is located on the north side of McFarlane Creek, approximately 2.2 kilometres east-southeast of the creek mouth on Kootenay Lake.
The area is underlain by coarse clastic rocks of the Upper Proterozoic Horsethief Creek Group and a Cretaceous granodioritic intrusive.
Locally, as defined by drilling, 5 to 20 centimetre wide quartz veins hosting pyrite, galena and sphalerite with minor molybdenite and scheelite mineralization are hosted by a propylitic altered granite. Muscovite, epidote and calcite are associated with the veins.
In 1981, diamond drill hole DH-81-6 intersected three mineralized zones yielding up to 138 grams per tonne silver, 0.554 per cent lead and 0.068 per cent zinc over 1 metre, while another drill hole (DK-81-7), located to the south east, intersected one mineralized zone yielding 43 grams per tonne silver, 0.270 per cent lead and 0.950 per cent zinc over 1 metre (Assessment Report 10307).
The area has been historically explored in conjunction with the nearby Ben Derby (MINFILE 082FNE125) occurrence. In 1966, New Fortune Mines staked the Benderby claims and completed a program of soil sampling, an unknown amount of diamond drilling in four drill holes and a ground electromagnetic survey. No records of this work are reported. In 1967, Kokanee Moly Mines completed a program of soil sampling on the area as the Ben Derby and UNF claims. In 1979, Dekalb Mining soil sampled the area as the MO and Moly claims. In 1980, Cominco completed a program of silt and soil sampling and geological mapping on the area as the Grey claims. The following year, Dekalb Mining completed a program of soil sampling and diamond drilling, totalling 1070.5 metres in 10 holes, and a ground induced polarization survey on the area. In 1987, Armarado Resources completed a ground induced polarization survey on the area as the Ford claims.
During 2005 through 2011, Jasper Mining, in conjunction with Mountain Star Resources, completed programs of rock and soil sampling, a 455.8 line-kilometre airborne geophysical survey, a ground induced polarization survey and 83 diamond drill holes, totalling 16,410.1 metres, on the area as the McFarlane property.