Zincsilite

General Information:
 Chemical Formula:
Zn3Si4O10(OH)2·4(H2O) (?)
 Composition:
(Molecular Weight = 574.58 gm)
Zinc 34.14 % Zn
Silicon 19.55 % Si
Hydrogen 1.75 % H 
Oxygen 44.55 % O 
 Empirical Formula:
Zn3Si4O10(OH)2·4(H2O)
 Environment:
Pseudomorphs after diopside in a galena-sphalerite-chalcopyrite skarn. Forms a series with sauconite.
 IMA Status:
Approved IMA 1960
 Locality:
Batystau, central Kazakhstan.
 Name Origin:
Name for the composition (Zinc Silicate).
Physical Properties:
 Cleavage:
[001] Perfect
 Color:
bluish white, white, or greenish white.
 Density:
2.61 - 2.71, Average = 2.66
 Diaphaniety:
Translucent to Opaque
 Habits:
Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite)., ,
 Hardness:
1.5-2 - Talc-Gypsum
 Luster:
Pearly
 Streak:
white
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