Vauxite

General Information: Chemical Formula:Fe++Al2(PO4)2(OH)2·6(H2O) Composition:(Molecular Weight = 441.86 gm)Aluminum 12.21 % AlIron 12.64 % FePhosphorus 14.02 % P Hydrogen 3.19 % H Oxygen 57.93 % O  Empirical Formula: Fe2+Al2(PO4)2(OH)2·6(H2O)Physical Properties: Cleavage:None Color:sky blue or dark blue. Density:2.4 Diaphaniety:Transparent to Translucent Hardness:3.5 - Copper Penny Luminescence:Fluorescent. Luster:Vitreous (Glassy) Streak:whiteMore details...