The former Cascade mine is located on Iron Creek, approximately 29 kilometres north west of Trail.

North trending quartz veins on Granville Mountain are thought to be genetically related to the intrusion of Eocene Coryell syenites into Carboniferous to Permian Mount Roberts Formation metasediments and Middle Jurassic quartz monzonites. Gold-bearing quartz vein systems occur within the quartz monzonite and average 1.2 metres thick. The north trending veins are generally steeply dipping to the east and are subparallel to two major joint orientations.

Vein mineralization at the Cascade showing is dominated by pyrite occurring as disseminated, fine to coarse grained euhedral crystals and locally defining a crude banding. Galena, sphalerite and chalcopyrite also occur. Country rock in the vicinity of the quartz veins has undergone varying degrees of hydrothermal alteration. Sericite and clay is pervasive within a few centimetres of the veins. This alteration decreases in intensity away from the veins, towards a propylitic envelope composed of chlorite as fracture filling and altered mafic crystals. Epidote is also associated with mineralized veins and occurs as stringers, clots and floods. Observed footwall and hangingwall alteration zones obtained maximum widths of 0.7 and 2.7 metres, respectively. Silicification occurs locally, but is not restricted to one side of the vein.

Production between 1902 and 1939 resulted in 47,774 grams of silver, 13,063 grams of gold, 187 kilograms of lead, 251 kilograms of zinc and 131 kilograms of copper from 625 tonnes.

All of the main vein systems on the Granville Mountain property have received intermittent work since 1898, when the Amazon claim block was Crown granted. Physical evidence of this work exists in the form of collapsed shafts, adits, opencuts and pits. In the 1940s, both Sheep Creek Gold Mines and Cominco examined the property and conducted extensive sampling of the vein systems. In 1962, Northern Syndicate Ltd. conducted diamond drilling on the Albion vein (082ESE086). Ground to the west and south of the Albion vein was examined in 1968 and a program of geological mapping, soil sampling and magnetometer survey was completed over an area covered by the Empire, Den and Lucky claims. In 1974, Ike Weibe, a local prospector, drilled 4 holes on the Albion vein and 2 holes on the Dubrovnik vein (082ESE086). Dolmage Campbell and Associated Ltd. conducted a brief property examination in 1979 but no detailed report was written. Eight holes were drilled on the Albion and Berlin/Alice L veins (082ESE084) in 1979. Extensive detailed geological mapping, soil sampling and VLF-EM and magnetometer surveys were conducted over two grid areas by E & B Explorations Ltd. in 1981. In 1983-84, F.M. Smith examined and sampled the Albion, Dubrovnik and Cascade-Bonanza veins. An orientation IP resistivity survey was completed across the Albion vein. In 1985, Prominent Resources Corporation conducted a geological investigation, and geochemical and geophysical (VLF-EM, magnetometer) orientation surveys. In 1994-1995, Gold City Resources completed geochemical sampling and a ground magnetometer survey. Grab samples returned up to 5130 parts per billion gold (Assessment Report 23713).

In 2006, Astral Mining Corporation conducted a helicopter-borne geophysical (electromagnetic) survey on the area as a part of the JJ property.