Bauxite is the primary source of aluminum metal,this ore is usually reddish to brown in color in nature.It is formed through a process of weathering, leaching,and deposition.Deposits of bauxite are often found near the surface of the Earth.The orebodies of bauxite deposits in Yunnan area with respect to specific tectonic units,especially for the mineralization point of Nyainqentanglha folds system edge,and the period of Variscan cycle is the mainly stage of forming bauxite deposits.