General Information:
Chemical Formula:
Ca2B2O5·(H2O)
Composition:
(Molecular Weight = 199.79 gm)
Calcium 40.12 % Ca
Boron 10.82 % B
Hydrogen 1.01 % H
Oxygen 48.05 % O
Empirical Formula:
Ca2B2O5·(H2O)
Environment:
In a vein between gehlenite-spurrite skarns and crystalline limestone. A polymorph of sibirskite.
IMA Status:
Approved IMA 1996 (Dana # Added)
Locality:
Fuka, Okayama Prefecture, Japan.
Name Origin:
For it's relationship to sibirskite.
Physical Properties:
Cleavage:
[100] Perfect
Color:
white.
Density:
2.5
Diaphaniety:
Transparent
Habits:
Tabular - Form dimensions are thin in one direction., Microscopic Crystals - Crystals visible only with microscopes.,
Hardness:
3 - Calcite
Luster:
Vitreous - Pearly
Streak:
white
More details...