
General Information:

Chemical Formula:
Zn(OH)2

Composition:
(Molecular Weight = 99.40 gm)
Zinc 65.78 %
ZnHydrogen 2.03 %
H Oxygen 32.19 %
O 
Empirical Formula:
Zn(OH)2

Environment:
In a vein in a limestone quarry, on fluorite associated with the polymorphs, sweetite and wulfingite.

IMA Status:
Approved IMA 1986

Locality:
Milltown, near Ashover, Derbyshire, England.

Name Origin:
Named for the locality.
Physical Properties:

Cleavage:
[001] Perfect

Color:
colorless or white.

Density:
3.3

Diaphaniety:
Translucent

Habits:
Platy - Sheet forms (e.g. micas)., ,

Luminescence:
Fluorescent, Short UV=bluish white.

Luster:
Vitreous - Dull

Streak:
white
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