Hetaerolite

General Information: Chemical Formula:ZnMn+++2O4 Composition:(Molecular Weight = 239.26 gm)Manganese 45.92 % MnZinc 27.33 % ZnOxygen 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 blackMore details...