The Mess showing area, immediately adjacent west of Mess Lake, is underlain by Late Devonian biotite granite to tonalite of the Forrest Kerr Plutonic Suite. About 1 kilometre to the west of Mess Lake, in contact with the plutonic rocks, are rocks of the Stikine Assemblage consisting of Pennsylvanian maroon tuff and lapilli tuff; ash-flow tuff, deformed tuff and sediments; and massive amygdaloidal basalt.

In 1964, 1.4 kilometres of magnetometer surveying was completed by Skeena Silver Mines Ltd. on their Mess Lake property. At the time, Skeena noted the presence of pinkish-white limestone, pink, medium coarse granite, fine-grained medium greenish black rock (andesite?), and siderite with irregular zones of magnetite and possibly chalcopyrite. The siderite and limestone were from talus and would have come from the rocks above. The characteristics of the occurrence was not reported.