Zapatalite

General Information: Chemical Formula:Cu3Al4(PO4)3(OH)9·4(H2O) Composition:(Molecular Weight = 808.61 gm)Aluminum 13.35 % AlCopper 23.58 % CuPhosphorus 11.49 % P Hydrogen 2.12 % H Oxygen 49.47 % O  Empirical Formula: Cu3Al4(PO4)3(OH)9·4(H2O) Environment:Replacement of libethenite and pseudomalachite. IMA Status:Approved IMA 1972 Locality:Cerro Morita Naco, 27 km SW of Agua Prieta, Sonora, Mexico. Name Origin:Named for Emiliano Zapata (1879-1919), hero of the Mexican Revolution.Physical Properties: Cleavage:[001] Good Color:light blue. Density:3.016 Diaphaniety:Translucent Hardness:1.5 - Between Talc and Gypsum Streak:light blueMore details...

C 3Al4(PO4)3(OH)9 4(H2O)