The Molly Hughes property is located at the town of New Denver at the north end of the Slocan mining camp. The Slocan mining camp is known primarily for silver production from polymetallic vein and "replacement" deposits. Lithologies are primarily fine grained clastic sedimentary rocks of the Triassic Slocan Group which consists of weakly metamorphosed argillites and phyllites, quartzites, limestones and some tuffaceous rocks. Slocan Group strata trend northwest and are intruded by the Mount Carpenter stock comprised of biotite hornblende quartz monzonite of unknown age (GSC Open File 432). The contact trends northeast across Mount Carpenter in the vicinity of Dennis Creek. These sedimentary rocks are also intruded by a multitude of dikes, sills and stocks.

The majority of ore deposits in the Slocan camp are fault-fissure veins within distinctive zones and trends, and replacement deposits where limestone or limy strata have been locally or extensively replaced by ore minerals.

At the Molly Hughes property, the quartz monzonite of the Mount Carpenter stock is coarse to medium grained and occasionally porphyritic. A series of northwest trending quartz veins cut the quartz monzonite with moderate to steep northeast dips. The veins consist of lenses of quartz and brecciated wallrock mineralized with disseminated argentiferous tetrahedrite, galena, sphalerite, pyrite, lesser chalcopyrite and possibly freibergite carrying gold and silver values. The quartz veins are massive and white or shows ribbon and comb structure (GSC Memoir 184). Vein widths vary from 7 centimetres to 2.4 metres but average in the range 10 centimetres to 0.5 metre. Mineralization occurs throughout the veins but is generally concentrated on the hangingwall side of the vein. Laterally, the veins have barren sections but continuity downdip is generally good.

Post-vein faulting has resulted in vertical and horizontal offsets, with slickensides indicating movement parallel to vein dip. The vertical displacement ranges to up 24 metres. It is believed that the movement is left-lateral and normal, with downdropping towards the east.

Numerous quartz veins are evident on the Molly Hughes property and two subparallel veins, the Kinkora and the Real Idea, appear to be of most interest. The bulk of early production was derived from the Kinkora, which is south of and lower than the Real Idea. The Real Idea vein strikes 140 degrees, dipping 49 degrees northeast (Sadlier-Brown and Nevin, 1978). Other veins (Assessment Report 4390) on the property include the Pinto, East Section, West Section, General, Northerly Lode, Southerly Lode, P.H.P. 2 Lodes and Tryon Lode.

Inferred ore reserves of 9072 tonnes at a grade of 5.8 grams per tonne gold and 1282 grams per tonne silver were estimated by Sadlier-Brown and Nevin (1978), based on a sampling program, assuming a deposit dimension of 122 by 122 by 0.2 metres, and allowing for dilution over a 1.2-metre mining width.

Production was first recorded in 1899 and continued until 1940, when production was stopped due to the war (Assessment Report 4390). An unsuccessful attempt was made to revive production in 1978 and 1979. Production from 1899 to 1940, and intermittent from 1957 to 1980, totalled 2578 tonnes, resulting in 25,790 grams of gold, 9,448,400 grams of silver, 2 kilograms of copper, 17,610 kilograms of lead and 16,869 kilograms of zinc.