General Information:
Chemical Formula:Cu3SbS4
Composition:(Molecular Weight = 440.65 gm)Copper 43.26 %
CuAntimony 27.63 %
SbSulfur 29.11 %
S Empirical Formula: Cu3SbS4
Environment:Antimoney (Sb) analog of enargite (arsenic-As).
Locality:Sierra de Famatina, La Rioja, Argentina.
Name Origin:Named after its locality.
Physical Properties: Cleavage:[101] Good, [100] Distinct
Color:grayish black, dark pink brown, or steel gray.
Density:4.57
Diaphaniety:Opaque
Hardness:3-4 - Calcite-Fluorite
Luminescence:Non-fluorescent.
Luster:Metallic
Streak:black
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