There are some 22 known ore bodies within the Mt. Lyell mineral field with a diverse range of mineralisation styles. The principal style of mineralisation within the Prince Lyell ore body , currently being mined, is a disseminated pyrite and chalcopyrite, containing copper, gold and silver. The main Prince Lyell host rocks are felsic lavas and pyroclastics, that have been subjected to low grade metamorphism, strong regional deformation and hydrothermal alteration. Mineralisation is age dated at 500 Mya.

CMT conducts focused near-mine surface exploration on it’s mine lease and exploration leases, and continues to delineate the Prince Lyell orebody which is still open at depth.

The combined proven and probable ore reserve at the Mt. Lyell mine as at 31st March 2008 is 9.68 million tonnes of copper ore at 1.31% total copper.