General Information:
Chemical Formula:
CaMn+++6SiO12
Composition:
(Molecular Weight = 589.78 gm)
Calcium 6.80 % Ca
Manganese 55.89 % Mn
Silicon 4.76 % Si
Oxygen 32.55 % O
Empirical Formula:
CaMn3+6SiO12
IMA Status:
Approved IMA 1979
Physical Properties:
Cleavage:
[???] Indistinct
Color:
black.
Density:
4.63
Diaphaniety:
Opaque
Hardness:
6 - Orthoclase
Luster:
Sub Metallic
Streak:
black
More details...