General Information:
Chemical Formula:Zn5(CO3)2(OH)6
Composition:(Molecular Weight = 549.01 gm)Zinc 59.55 %
ZnHydrogen 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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