General Information:
Chemical Formula:
Cu2(Zn,Fe)GeS4
Composition:
(Molecular Weight = 390.97 gm)
Zinc 12.54 % Zn
Iron 3.57 % Fe
Copper 32.51 % Cu
Germanium 18.57 % Ge
Sulfur 32.81 % S
Empirical Formula:
Cu2Zn0.75Fe2+0.25GeS4
IMA Status:
Approved IMA 1965
Physical Properties:
Color:
blue gray, gray, or iron gray.
Density:
4.5
Diaphaniety:
Opaque
Hardness:
3.5-4 - Copper Penny-Flourite
Luster:
Metallic
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