General Information:
Chemical Formula:
Zn5(CO3)2(OH)6
Composition:
(Molecular Weight = 549.01 gm)
Zinc 59.55 % Zn
Hydrogen 1.10 % H
Carbon 4.38 % C
Oxygen 34.97 % O
Empirical Formula:
Zn5(CO3)2(OH)6
Environment:
Secondary mineral in the oxidized portions of zinc deposits.
IMA Status:
Accepted IMA 1980
Locality:
Bleiberg, in Carinthia, Austra.
Name Origin:
Named after its chemical composition.
Physical Properties:
Cleavage:
[100] Perfect
Color:
white, yellowish white, grayish white, pinkish white, or bluish white.
Density:
3.2 - 3.8, Average = 3.5
Diaphaniety:
Transparent
Habits:
Bladed - Aggregates of thin lath-like crystals (e.g. kyanite)., Stalactitic - Shaped like pendant columns as stalactites or stalagmites (e.g. calcite)., Massive - Fibrous - Distinctly fibrous fine-grained forms.
Hardness:
2-2.5 - Gypsum-Finger Nail
Luminescence:
None.
Luster:
Pearly
Streak:
white
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