Characteristics of Different Types of Ores Bauxite is a rather broad concept and the standard of bauxite ore changes as world. refractory calcined bauxite of ec. Product Introduction Bauxite (Al 2 O 3 ·nH 2 O), comes in three different forms: Gibbsite(Al(OH)3), Boehmite(AlO(OH), andDiaspore(AlO(OH).