General Information:
Chemical Formula:Tl6(Fe,Ni,Cu)25S26Cl
Composition:(Molecular Weight = 3,510.71 gm)Thallium 34.93 %
TlIron 31.82 %
FeCopper 1.81 %
CuNickel 6.69 %
NiSulfur 23.75 %
S Chlorine 1.01 %
Cl Empirical Formula: Tl6Fe2+20Ni4CuS26Cl
IMA Status:Approved IMA 1979
Locality:Oktyabr mine, Norilsk, Russia.
Name Origin:Named for the composition (Tl, Fe, Ni, S).
Physical Properties: Color:bronze brown or greenish brown.
Density:5.26
Diaphaniety:Opaque
Habits:Microscopic Crystals - Crystals visible only with microscopes., ,
Hardness:1-1.5 - Talc or a little harder
Luster:Metallic
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