General Information:
Chemical Formula:(Fe++,Mg)2Si2O6
Composition:(Molecular Weight = 232.32 gm)Magnesium 10.46 %
MgIron 24.04 %
FeSilicon 24.18 %
SiOxygen 41.32 %
O Empirical Formula: Fe2+MgSi2O6
Environment:Found in basic and ultrabasic igneous rocks.
IMA Status:Approved IMA
Locality:Unspecified locality in Russia.
Name Origin:Named for its composition (Ferrous Silicate).
Physical Properties: Cleavage:[210] Good, [100] Parting
Color:colorless, green, dark brown, or nearly black.
Density:3.88 - 4.02, Average = 3.95
Diaphaniety:Translucent to Opaque
Habits:Anhedral Grains - Granular minerals without the expression of crystal shapes, ,
Hardness:5-6 - Between Apatite and Orthoclase
Luster:Vitreous (Glassy)
Streak:pale brownish gray
More details...
