Florencite-(La)

General Information: Chemical Formula:(La,Ce)Al3(PO4)2(OH)6 Composition:(Molecular Weight = 512.14 gm)Lanthanum 20.34 % LaCerium 6.84 % CeAluminum 15.81 % AlPhosphorus 12.10 % P Hydrogen 1.18 % H Oxygen 43.74 % O  Empirical Formula: La0.75Ce0.25Al3(PO4)2(OH)6 IMA Status:Approved IMA 1987Physical Properties: Cleavage:[0001] Good Color:colorless or light yellow. Density:3.52 Diaphaniety:Transparent Hardness:5-6 - Between Apatite and Orthoclase Luster:Resinous - Greasy Streak:whiteMore details...