The arsenic minerals or arsenic group are a group of trigonal symmetry minerals composed of arsenic-like elements, and one alloy.[1]

Arsenic
General
CategoryMineral
Formula
(repeating unit)
FeAsS (arsenopyrite)
Strunz classification01.CA.05
Dana classification01.03.01 (Arsenic Group)
Crystal systemMonoclinic
Crystal classSulphide
Space groupTrigonal, hexagonal scalenohedral
Identification
ColourLead gray, grey, white
Crystal habitLamellar, nodular, reniform
CleavagePerfect
FractureSubconchoidal, uneven
Mohs scale hardness3.5
StreakBlack
DiaphaneityOpaque
Density5.7

The elements are arsenic, antimony and bismuth.[2] The alloy is stibarsen (SbA) an alloy of arsenic and antimony.[3]

References

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  1. ^ "Arsenic Mineral Data". webmineral.com. Retrieved 2021-02-11.
  2. ^ "Arsenic: The mineral native Arsenic information and pictures". www.minerals.net. Retrieved 2021-02-11.
  3. ^ "Stibarsen". www.mindat.org. Retrieved 2021-02-11.