General Information:
Chemical Formula:
ZnMn+++2O4
Composition:
(Molecular Weight = 239.26 gm)
Manganese 45.92 % Mn
Zinc 27.33 % Zn
Oxygen 26.75 % O
Empirical Formula:
ZnMn3+2O4
Locality:
Franklin, New Jersey, USA.
Physical Properties:
Cleavage:
[001] Perfect
Color:
black.
Density:
4.85
Diaphaniety:
Subtranslucent to opaque
Habits:
Massive - Granular - Common texture observed in granite and other igneous rock., ,
Hardness:
6 - Orthoclase
Luminescence:
Non-fluorescent.
Luster:
Sub Metallic
Streak:
brownish black
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