Hawthorneite

General Information:
 Chemical Formula:
Ba[Ti3Cr4Fe4Mg]O19
 Composition:
(Molecular Weight = 1,040.63 gm)
Barium 13.20 % Ba
Magnesium 2.34 % Mg
Titanium 13.80 % Ti
Chromium 19.99 % Cr
Iron 21.47 % Fe
Oxygen 29.21 % O 
 Empirical Formula:
BaTi3Cr4Fe2+4MgO19
 IMA Status:
Approved IMA
Physical Properties:
 Cleavage:
None
 Color:
black.
 Diaphaniety:
Opaque
 Hardness:
6-6.5 - Orthoclase-Pyrite
 Luster:
Metallic
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