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From Wikipedia, the free encyclopedia
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 | |
---|---|
General | |
Category | Halide mineral |
Formula (repeating unit) | Cu3(Cu,Zn)(OH)6Cl2 |
IMA symbol | Pata[1] |
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 | [2] |
It is found in Chile, Botallack Mine in Cornwall, Broken Hill, Australia, and in Italy in Capo Calamita on the island of Elba.[2]
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