ABSTRACT
Mine Mainland layer distributed to a lesser extent, an area of about 200 km2. Stratum elongated strip, crescent-shaped, irregular-shaped “float” in the Variscan-over large Caledonian felsic batholith. Exposed strata within the mining area is mainly the Middle Proterozoic Jianshan formation of Bayan Obo group, Halahuoqite rock group and Bilute rock group.
