General Information:
Chemical Formula:
CaSnSi3O9·2(H2O)
Composition:
(Molecular Weight = 423.07 gm)
Calcium 9.47 % Ca
Silicon 19.92 % Si
Tin 28.06 % Sn
Hydrogen 0.95 % H
Oxygen 41.60 % O
Empirical Formula:
CaSnSi3O9·2(H2O)
Locality:
Roscommon Cliff, St. Just, Cornwall, England.
Physical Properties:
Cleavage:
[???] Good, [???] Good
Color:
colorless.
Density:
3.2
Diaphaniety:
Transparent to translucent
Habits:
Massive - Uniformly indistinguishable crystals forming large masses., ,
Hardness:
6 - Orthoclase
Luster:
Vitreous (Glassy)
Streak:
white
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