The Richmond showings are hosted in a sequence of rocks of the Lower Jurassic Elise Formation, Rossland Group consisting of an augite porphyry sill, siltstone, and hornfelsic siltstone. The occurrence is located 400 metres south of the southern edge of the Early Jurassic Rossland Monzonite. The showings lie within the zone of thermal metamorphism associated with the monzonite intrusive. The grey to black siltstone and argillite grades to hornfels and forms distinct layers within the Rossland Group volcanic breccias. Stratigraphic relationships are uncertain but the siltstones grade laterally into sandstone and breccia. Ammonites of Early Jurassic age were reported to occur in the siltstone on Ivanhoe Ridge.

Mineralization occurs within sulphide veins in the augite porphyry, hornfelsed siltstone and greenstone. The ore is a mixture of arsenopyrite, pyrite and chalcopyrite with some marcasite. Veins in the metasediments host galena, sphalerite and locally, boulangerite. The vein strikes 080 degrees dipping steeply at 85 degrees north and lies within the South belt vein system.

In 1912, 11 tonnes of ore were mined from the Richmond vein system and 311 grams gold, 14,432 grams silver and 912 kilograms lead were recovered. The ore was comprised mainly of argentiferous galena with associated sphalerite, chalcopyrite, pyrrhotite with minor disseminations of arsenopyrite and pyrite in the layered host rock.

Refer to the Le Roi deposit (082FSW093) for a summary of the Rossland mining camp.