General Information:
Chemical Formula:(Mg,Fe++)2(Fe+++,Ti,Mg)BO5
Composition:(Molecular Weight = 205.49 gm)Magnesium 18.92 %
MgTitanium 6.99 %
TiIron 29.90 %
FeBoron 5.26 %
B Oxygen 38.93 %
O Empirical Formula: Mg1.5Fe2+0.5Fe3+0.6Ti0.3Mg0.1BO5
IMA Status:Approved IMA 1970
Physical Properties: Cleavage:[010] Good, [001] Distinct
Color:black.
Density:3.63
Diaphaniety:Transparent to Subopaque
Hardness:5.5 - Knife Blade
Luster:Adamantine
Streak:gray
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