General Information:
Chemical Formula:
(Ba,Sr)2Mn+++2Si4O12
Composition:
(Molecular Weight = 664.01 gm)
Barium 31.02 % Ba
Strontium 6.60 % Sr
Manganese 16.55 % Mn
Silicon 16.92 % Si
Oxygen 28.91 % O
Empirical Formula:
Ba1.5Sr0.5Mn3+2Si4O12
IMA Status:
Approved IMA
Physical Properties:
Cleavage:
[001] Perfect
Color:
greenish black.
Density:
4.72
Diaphaniety:
Translucent to Opaque
Hardness:
6-7 - Orthoclase-Quartz
Luster:
Vitreous - Greasy
More details...