General Information:
Chemical Formula:
CaCuAlSi2O6(OH)3
Composition:
(Molecular Weight = 333.79 gm)
Calcium 12.01 % Ca
Aluminum 8.08 % Al
Copper 19.04 % Cu
Silicon 16.83 % Si
Hydrogen 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 blue
More details...