General Information:
Chemical Formula:
TlCu3FeS4
Composition:
(Molecular Weight = 579.13 gm)
Thallium 35.29 % Tl
Iron 9.64 % Fe
Copper 32.92 % Cu
Sulfur 22.15 % S
Empirical Formula:
TlCu3Fe2+S4
IMA Status:
Approved IMA 1976
Physical Properties:
Cleavage:
[???] Good
Color:
bronze or black.
Density:
6.15
Diaphaniety:
Opaque
Hardness:
2.5-3 - Finger Nail-Calcite
Luster:
Metallic
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