General Information:
Chemical Formula:(Fe++,Mg,Mn)3B7O13Cl
Composition:(Molecular Weight = 458.00 gm)Magnesium 4.78 %
MgManganese 3.60 %
MnIron 21.95 %
FeBoron 16.52 %
B Chlorine 7.74 %
ClOxygen 45.41 %
O Empirical Formula: Fe2+1.8Mg0.9Mn2+0.3B7O13Cl
Physical Properties: Cleavage:None
Color:brown, light green, red, or black.
Density:3.22
Diaphaniety:Transparent
Hardness:7-7.5
Luster:Vitreous (Glassy)
Streak:white
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