General Information:
Chemical Formula:
Cu8Fe3Sn2S12
Composition:
(Molecular Weight = 1,298.12 gm)
Iron 12.91 % Fe
Copper 39.16 % Cu
Tin 18.29 % Sn
Sulfur 29.64 % S
Empirical Formula:
Cu8Fe2+3Sn2S12
IMA Status:
Approved IMA 1969
Locality:
Konjo mine, Okayama Prefecture, Japan.
Name Origin:
Named for its similarity to stannite.
Physical Properties:
Cleavage:
None
Color:
brass brown.
Density:
4.29
Diaphaniety:
Opaque
Habits:
Massive - Uniformly indistinguishable crystals forming large masses., ,
Hardness:
4 - Fluorite
Luster:
Metallic
Streak:
brown gray
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