General Information:
Chemical Formula:
NaMnMgSn++++Be2Si3O12(OH)
Composition:
(Molecular Weight = 532.22 gm)
Sodium 4.32 % Na
Magnesium 4.57 % Mg
Manganese 10.32 % Mn
Beryllium 3.39 % Be
Silicon 15.83 % Si
Tin 22.30 % Sn
Hydrogen 0.19 % H
Oxygen 39.08 % O
Empirical Formula:
NaMn2+MgSnBe2(Si3O12)(OH)
IMA Status:
Approved IMA
Physical Properties:
Cleavage:
[010] Perfect
Color:
yellow.
Density:
3.6
Hardness:
6.5 - Pyrite
Luster:
Vitreous - Dull
Streak:
white
More details...