General Information:
Chemical Formula:
Ca2B2SiO7
Composition:
(Molecular Weight = 241.86 gm)
Calcium 33.14 % Ca
Silicon 11.61 % Si
Boron 8.94 % B
Oxygen 46.31 % O
Empirical Formula:
Ca2B2SiO7
Environment:
The boron-dominant analogue of gehlenite. Skarm mineral.
IMA Status:
Approved IMA (Dana # Added)
Locality:
The Fuka mine, Bicchu-cho, Okayama Prefecture, Japan.
Name Origin:
Named after it's locality.
Physical Properties:
Cleavage:
None
Color:
creamy white.
Density:
3.3
Habits:
Microscopic Crystals - Crystals visible only with microscopes., ,
Hardness:
5.5 - Knife Blade
Luster:
Earthy (Dull)
Streak:
white
More details...