General Information:
Chemical Formula:
Ba2(Fe+++,Mn+++)(VO4)2(OH)
Composition:
(Molecular Weight = 577.16 gm)
Barium 47.59 % Ba
Manganese 2.38 % Mn
Vanadium 17.65 % V
Iron 7.26 % Fe
Hydrogen 0.17 % H
Oxygen 24.95 % O
Empirical Formula:
Ba2Fe3+0.75Mn3+0.25(VO4)2(OH)
Physical Properties:
Cleavage:
[001] Distinct, [100] Distinct, [101] Indistinct
Color:
brownish black, dark brown, or black.
Density:
4.62
Diaphaniety:
Translucent to Opaque
Hardness:
4.5-5
Luster:
Adamantine
More details...