Paratacamite
Paratacamite is a mineral in the halide minerals category. Its chemical formula is Cu3(Cu,Zn)(OH)6Cl2. Its name is derived from its association with atacamite.
| Paratacamite | |
|---|---|
Paratacamite from the Cornwall, England | |
| General | |
| Category | Halide mineral |
| Formula (repeating unit) | Cu3(Cu,Zn)(OH)6Cl2 |
| IMA symbol | Pata |
| Strunz classification | III / D.01-55 |
| Crystal system | Trigonal |
| Crystal class | Rhombohedral |
| Unit cell | a = 13,654, c = 14,041; |
| Identification | |
| Formula mass | 58.433 g/mol |
| Color | Green |
| Cleavage | Very good |
| Fracture | Conchoidal |
| Mohs scale hardness | 3 |
| Luster | Vitreous |
| Streak | Green |
| Diaphaneity | Transparent |
| Specific gravity | 3.74 |
| Density | 3.74g/cm3 |
| Solubility | Acid-soluble |
| References | |
It is found in Chile, Botallack Mine in Cornwall, Broken Hill, Australia, and in Italy in Capo Calamita on the island of Elba.
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