The Mel occurrence is located in the southwestern head waters of Melvin Creek, at an elevation of approximately 2100 metres.
The region is underlain by metasedimentary and metavolcanic rocks of the Mississippian to Jurassic Bridge River Complex, intruded by dominantly granodioritic stocks of the Jurassic to Tertiary Coast Plutonic Complex.
Locally, disseminated pyrite, pyrrhotite, molybdenite and arsenopyrite mineralization is hosted by a feldspar porphyritic granodiorite intrusive bordering a biotite granodiorite pluton. Felsic (aplite?) dikes, minor silicified zones, quartz veins and stockworks also host molybdenite mineralization. The mineralized area trends northwest by southeast in an elongate area, which measures approximately 500 by 150 metres.
In 1981, samples yielded up to 0.100 per cent molybdenum and 0.014 per cent copper (Sample GD305; Assessment Report 9715)
In 1980 and 1981, Denison Mines completed programs of geochemical sampling and geological mapping on the area as the Mel claims. In 1983, a program of geochemical sampling and geological mapping was completed on the area as the Cay property.