Chalcostibite

Chalcostibite is a copper antimony sulfide mineral.

Chalcostibite
General
CategoryChalcostibite Group
Formula
(repeating unit)
CuSbS2
Strunz classification02.HA.05
Dana classification03.07.05.01
Crystal systemOrthorhombic
Identification
ColourLead-gray, iron gray
Crystal habitGranular
Cleavage(001)
FractureSub-Conchoidal
TenacityBrittle
Mohs scale hardness3 - 4
LusterMetallic
StreakBlack
DiaphaneityOpaque
Specific gravity4.9 - 5
Density4.9 - 5 g/cm3 (Measured)    5.011 g/cm3 (Calculated)
PleochroismWeak
Ultraviolet fluorescenceNon-fluorescent
References[1], [2]

Příbramite is related, having selenium instead of sulfur. Emplectite contains bismuth instead of antimony.

Occurrences

gollark: I would say that the important brain parts have a better claim to being "me" than my foolish mortal flesh.
gollark: Which bit are you calling "you" here?
gollark: Well, you would probably die at some point as the... brain parts... run out of stored glucose.
gollark: > 222 new messagesÆÆÆÆÆÆÆ
gollark: What a somewhat unique cosmic horror thing.

See also

References

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