General Information:
Chemical Formula:
(Fe,Ni)9S11 or (Fe,Ni)13S16
Composition:
(Molecular Weight = 861.75 gm)
Iron 43.74 % Fe
Nickel 15.32 % Ni
Sulfur 40.93 % S
Empirical Formula:
Fe2+6.75Ni2.25S11
Physical Properties:
Cleavage:
[???] Perfect
Color:
brownish black or light bronze.
Density:
4.32
Diaphaniety:
Opaque
Hardness:
4.5 - Between Fluorite and Apatite
Luster:
Metallic
Streak:
dark gray
More details...