The historic Jenny Long camp is located within a north trending belt of Upper Triassic intermediate volcanics, volcaniclastics and sediments belonging to the Nicola Group. These greenstones consist of massive, chlorite-epidote altered andesite and basalt, augite porphyry, andesitic flow breccia and tuff, and minor interbedded argillite, conglomerate and limestone. Attitudes of tuff horizons and sedimentary bedding suggest that a north plunging axis of a syncline passes through Mineral Hill. Both west and northeast of Stump Lake, the Nicola Group volcanics are intruded by Lower Jurassic granitic batholiths; scattered granodiorite outcrops have been mapped in the vicinity of the camp. Secondary to the north-northeast trending Quilchena and Stump Lake regional faults are numerous smaller faults which form a complex fracture pattern and appear to control alteration and mineralization. Andesitic rocks are bleached, pervasively silicified, pyritic and brecciated. Mineralization occurs in numerous quartz, and less commonly calcite veins which strike generally to the north and dip steeply eastward.

On the Scotia showing, a diamond-drill hole intersected two quartz-carbonate veins carrying 5 per cent pyrite and magnetite; wallrock also contains 5 per cent disseminated pyrite. In other holes, pyrite, chalcopyrite, sphalerite and galena occur as fracture- fillings in highly brecciated zones. Drill core assayed up to 97.01 grams per tonne silver, 1.02 per cent copper and 0.8 per cent zinc (Assessment Report 13152).

In 1996, a sample from the area is reported to have assayed 20.1 grams per tonne gold and 140.2 grams per tonne silver (Assessment Report 24923; Gourlay, A.W. (2013-09-13): Independent Geological Report on the Mineral Hill Property).