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Arsenic minerals

Topic: Chemistry

 From HandWiki - Reading time: 1 min
Short description: Group of minerals
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 arsenic minerals or arsenic group are a group of trigonal symmetry minerals composed of arsenic-like elements, and one alloy.[1]

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

References

  1. ↑ "Arsenic Mineral Data". http://webmineral.com/data/Arsenic.shtml. 
  2. ↑ "Arsenic: The mineral native Arsenic information and pictures" (in en-US). http://www.minerals.net/MineralDefinition.aspx?name=arsenic. 
  3. ↑ "Stibarsen". https://www.mindat.org/min-3775.html. 




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