Jimboite

General Information:
 Chemical Formula:
Mn3B2O6
 Composition:
(Molecular Weight = 282.43 gm)
Manganese 58.36 % Mn
Boron 7.65 % B 
Oxygen 33.99 % O 
 Empirical Formula:
Mn2+3B2O6
 IMA Status:
Approved IMA 1963
Physical Properties:
 Cleavage:
[110] Perfect
 Color:
light purple brown or reddish brown.
 Density:
3.98
 Diaphaniety:
Transparent
 Hardness:
5.5 - Knife Blade
 Luster:
Vitreous (Glassy)
 Streak:
white
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