General Information:
Chemical Formula:
NaMn+++(Si2O6)
Composition:
(Molecular Weight = 230.10 gm)
Sodium 9.99 % Na
Manganese 23.88 % Mn
Silicon 24.41 % Si
Oxygen 41.72 % O
Empirical Formula:
NaMn3+Si2O6
IMA Status:
Approved IMA
Physical Properties:
Cleavage:
[???] Perfect
Color:
brownish red or violet red.
Density:
3.6
Diaphaniety:
Transparent
Hardness:
6-7 - Orthoclase-Quartz
Luster:
Vitreous - Pearly
Streak:
brown red
More details...