General Information:
Chemical Formula:
Cu3Al4(PO4)3(OH)9·4(H2O)
Composition:
(Molecular Weight = 808.61 gm)
Aluminum 13.35 % Al
Copper 23.58 % Cu
Phosphorus 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 blue
More details...