Chalcostibite

chalcostibite

skinnerite

jamesonite

dadsonite

Images

Formula: CuSbS2
Sulphosalt, chalcostibite group
Specific gravity: 4.9 to 5.0
Hardness: 3 to 4
Streak: Black
Colour: Lead-grey, iron grey
Common impurities: Pb,Fe,Zn
Environments

Hydrothermal environments

Chalcostibite occurs in hydrothermal veins associated with jamesonite, chalcopyrite, pyrite, tetrahedrite, stibnite, andorite, stannite, dadsonite, siderite, baryte and quartz (HOM, Mindat).

Localities

The type locality is the Graf Jost-Christian Mine, Wolfsberg, Stolberg, Südharz, Mansfeld-Südharz, Saxony-Anhalt, Germany.

Alteration

chalcostibite and chalcocite to skinnerite
CuSbS2 + Cu2S → Cu3SbS3
(CM 28.725-738)

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