Papagoite

General Information: Chemical Formula:CaCuAlSi2O6(OH)3 Composition:(Molecular Weight = 333.79 gm)Calcium 12.01 % CaAluminum 8.08 % AlCopper 19.04 % CuSilicon 16.83 % SiHydrogen 0.91 % H Oxygen 43.14 % O  Empirical Formula: CaCuAlSi2O6(OH)3 Environment:Secondary mineral. IMA Status:Approved IMA 1960 Locality:Ajo mine, Poma Co., Arizona. Name Origin:Named after the papago indian tribe, Arizona, USA.Physical Properties: Cleavage:[100] Imperfect Color:light blue. Density:3.25 Diaphaniety:Transparent to translucent Habits:Encrustations - Forms crust-like aggregates on matrix., Cryptocrystalline - Occurs as crystals too small to distinguish with the naked eye., Hardness:5-5.5 - Apatite-Knife Blade Luster:Vitreous (Glassy) Streak:light blueMore details...

CaC AlSi2O6(OH)3 Paraalumohydrocalcite CaAl2(CO3)2(OH)4 6(H2O)