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Redirected from a search for 'арсенопирит'

Арсенопирит is a synonym of Arsenopyrite.

Arsenopyrite

A valid IMA mineral species - grandfathered
This page kindly sponsored by Mark Kucera
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About ArsenopyriteHide

Formula:
FeAsS
Colour:
Silver-white to steel-gray, may have a slight yellow appearance
Lustre:
Metallic, Sub-Metallic
Hardness:
5½ - 6
Specific Gravity:
6.07
Crystal System:
Monoclinic
Name:
Named in 1847 by Ernst Friedrich Glocker for its composition, a contraction of the antiquated term "arsenical pyrite." Arsenopyrite was known much before 1847 and arsenopyrite, as a name, may be taken as a simple translation of "arsenkies".
Arsenopyrite Group.

For possible Ni-analogue see Unnamed (Ni,Fe,Co)AsS; see also Unnamed (Ni Arsenide Sulphide). Arsenopyrite is closely related to alloclasite, but is not an exact analogue, because of different As-S and S-As ordering.

Arsenopyrite may contain up to about 9 wt.% Co; with higher Co contents, glaucodot will appear as a separate phase (Gammon, 1966).

May be confused with the iron arsenide löllingite.


Unique IdentifiersHide

Mindat ID:
305
Long-form identifier:
mindat:1:1:305:8
GUID
(UUID V4):
cb7720ec-136f-4155-8922-8ed3ab0dd59f

IMA Classification of ArsenopyriteHide

Approved, 'Grandfathered' (first described prior to 1959)

Classification of ArsenopyriteHide

2.EB.20

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
E : Metal Sulfides, M: S <= 1:2
B : M:S = 1:2, with Fe, Co, Ni, PGE, etc.
Dana 7th ed.:
2.12.4.1
2.12.4.1

2 : SULFIDES
12 : AmBnXp, with (m+n):p = 1:2
3.9.12

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
9 : Sulphides etc. of Fe

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.

SymbolSourceReference
ApyIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
ApyKretz (1983)Kretz, R. (1983) Symbols of rock-forming minerals. American Mineralogist, 68, 277–279.
ApySiivolam & Schmid (2007)Siivolam, J. and Schmid, R. (2007) Recommendations by the IUGS Subcommission on the Systematics of Metamorphic Rocks: List of mineral abbreviations. Web-version 01.02.07. IUGS Commission on the Systematics in Petrology. download
ApyWhitney & Evans (2010)Whitney, D.L. and Evans, B.W. (2010) Abbreviations for names of rock-forming minerals. American Mineralogist, 95, 185–187 doi:10.2138/am.2010.3371
ApyThe Canadian Mineralogist (2019)The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download

Physical Properties of ArsenopyriteHide

Metallic, Sub-Metallic
Transparency:
Opaque
Colour:
Silver-white to steel-gray, may have a slight yellow appearance
Comment:
Tarnished material common
Streak:
Gray-black
Hardness:
5½ - 6 on Mohs scale
Hardness:
VHN100=1081 kg/mm2 - Vickers
Comment:
VHN on (001) section
Tenacity:
Brittle
Cleavage:
Distinct/Good
Distinct on {001}; {010} in traces
Fracture:
Irregular/Uneven
Density:
6.07(15) g/cm3 (Measured)    6.18 g/cm3 (Calculated)

Optical Data of ArsenopyriteHide

Anisotropism:
Strong red-violet
Reflectivity:
WavelengthR1R2
400nm50.3% 51.8%
420nm50.3% 51.8%
440nm51.3% 51.8%
460nm50.6% 51.8%
480nm51.0% 51.9%
500nm51.4% 51.9%
520nm51.8% 51.9%
540nm52.2% 51.9%
560nm52.5% 51.9%
580nm53.0% 51.8%
600nm53.4% 51.6%
620nm53.6% 51.5%
640nm53.6% 51.3%
660nm53.6% 51.3%
680nm53.4% 51.2%
700nm53.2% 51.0%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 53.6%.
R1 shown in black, R2 shown in red
Colour in reflected light:
White with faint yellow tint
Pleochroism:
Weak
Comments:
White or bluish tint, faint reddish yellow

Chemistry of ArsenopyriteHide

Mindat Formula:
FeAsS
Common Impurities:
Ag,Au,Co,Sn,Ni,Sb,Bi,Cu,Pb

Crystallography of ArsenopyriteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/c
Cell Parameters:
a = 5.7612(8) Å, b = 5.6841(7) Å, c = 5.7674(8) Å
β = 111.721(8)°
Ratio:
a:b:c = 1.014 : 1 : 1.015
Unit Cell V:
175.46 ų
Z:
4
Morphology:
Flat tabular to blocky (sometimes pseudo-octahedral) to prismatic.
Twinning:
Common on {100} and {001}. Contact or penetration on {101}, on {012} trillings or cruciform.
Comment:
Cell parameters from Bindi et al. (2012), using stoichiometric crystals. Pseudo-orthorhombic, face-centred cell: ~5.7, ~6.4, ~9.6 A.

Crystallographic forms of ArsenopyriteHide

Crystal Atlas:
Image Loading
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Arsenopyrite no.5 - Goldschmidt (1913-1926)
Arsenopyrite no.12 - Goldschmidt (1913-1926)
Arsenopyrite no.14 - Goldschmidt (1913-1926)
Arsenopyrite no.62 - Goldschmidt (1913-1926)
Arsenopyrite no.64 - Goldschmidt (1913-1926)
Arsenopyrite no.113 - Goldschmidt (1913-1926)
3d models and HTML5 code kindly provided by www.smorf.nl.

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Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0000112ArsenopyriteMorimoto N, Clark L A (1961) Arsenopyrite crystal-chemical relations From Freiberg, Germany American Mineralogist 46 1448-146919610293
0019195ArsenopyriteBindi L, Moelo Y, Leone P, Suchaud M (2012) Stoichiometric arsenopyrite, FeAsS, from La Roche-Balue Quarry, Loire-Atlantique, France: Crystal structure and Mossbauer study The Canadian Mineralogist 50 471-4792012La Roche-Balue Quarry, Loire-Atlantique, France0293
0016964ArsenopyriteBuerger M (1936) The symmetry and crystal structure of the minerals of the arsenopyrite group Zeitschrift fur Kristallographie 95 83-1131936St Peter mine, Spindelmuhle, Bohemia0293
0010966ArsenopyriteFuess H, Kratz T, Topel-Schadt J, Miehe G (1987) Crystal structure refinement and electron microscopy of arsenopyrite Zeitschrift fur Kristallographie 179 335-3461987Hakansboda, Sweden0293
0010967ArsenopyriteFuess H, Kratz T, Topel-Schadt J, Miehe G (1987) Crystal structure refinement and electron microscopy of arsenopyrite Zeitschrift fur Kristallographie 179 335-3461987Hakansboda, Sweden0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

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Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
d-spacingIntensity
3.658 Å(40)
2.866 Å(5)
2.838 Å(30)
2.796 Å(10)
2.677 Å(100)
2.662 Å(100)
2.557 Å(10)
2.440 Å(90)
2.418 Å(95)
2.412 Å(95)
2.204 Å(25)
2.095 Å(20)
2.017 Å(5)
1.961 Å(50)
1.943 Å(25)
1.824 Å(70)
1.814 Å(90)
1.787 Å(5)
1.759 Å(20)
1.750 Å(5)
1.703 Å(5)
1.631 Å(30)
1.608 Å(25)
1.594 Å(15)
1.589 Å(20)
1.543 Å(20)
1.537 Å(20)
1.390 Å(5)
1.343 Å(15)
Comments:
ICDD 14-218 (Freiberg, Germany)

Geological EnvironmentHide

Paragenetic Mode(s):
Geological Setting:
High-temperature gold-quartz or tin hydrothermal veins, pegmatites, contact metamorphic rocks, gneisses, schists.

Synonyms of ArsenopyriteHide

Other Language Names for ArsenopyriteHide

Varieties of ArsenopyriteHide

DanaiteA Co-bearing variety of arsenopyrite.
Originally described from Franconia, Grafton Co., New Hampshire, USA.

Relationship of Arsenopyrite to other SpeciesHide

Other Members of this group:
Glaucodot(Co0.50Fe0.50)AsSOrth. mm2 : Pmn21
GudmunditeFeSbSMon. 2/m : P21/b
Osarsite(Os,Ru)AsSMon.
Ruarsite(Ru,Os)AsSMon.

Common AssociatesHide

Associated Minerals Based on Photo Data:
1,738 photos of Arsenopyrite associated with QuartzSiO2
678 photos of Arsenopyrite associated with PyriteFeS2
568 photos of Arsenopyrite associated with FluoriteCaF2
553 photos of Arsenopyrite associated with MuscoviteKAl2(AlSi3O10)(OH)2
520 photos of Arsenopyrite associated with ChalcopyriteCuFeS2
504 photos of Arsenopyrite associated with CalciteCaCO3
479 photos of Arsenopyrite associated with SphaleriteZnS
454 photos of Arsenopyrite associated with SideriteFeCO3
312 photos of Arsenopyrite associated with FluorapatiteCa5(PO4)3F
253 photos of Arsenopyrite associated with FerberiteFeWO4

Related Minerals - Strunz-mindat GroupingHide

2.EB.Iridarsenite(Ir,Ru)As2Mon. 2/m : P21/b
2.EB.SelenolauriteRuSe2Iso. m3 (2/m 3) : Pa3
2.EB.AndrieslombaarditeRhSbSIso. 2 3 : P21 3
2.EB.Kanatzidisite(SbBiS3)2Te2Mon. 2/m : P21/m
2.EB.05aAurostibiteAuSb2Iso. m3 (2/m 3) : Pa3
2.EB.05bBambollaiteCu(Se,Te)2Tet.
2.EB.05aCattieriteCoS2Iso. m3 (2/m 3) : Pa3
2.EB.05aErlichmaniteOsS2Iso. m3 (2/m 3) : Pa3
2.EB.05aFukuchiliteCu3FeS8Iso. m3 (2/m 3) : Pa3
2.EB.05aGeversitePtSb2Iso. m3 (2/m 3) : Pa3
2.EB.05aHaueriteMnS2Iso. m3 (2/m 3) : Pa3
2.EB.05aInsizwaitePt(Bi,Sb)2Iso. m3 (2/m 3) : Pa3
2.EB.05aKrut'aiteCuSe2Iso. m3 (2/m 3) : Pa3
2.EB.05aLauriteRuS2Iso. m3 (2/m 3) : Pa3
2.EB.05aPenroseite(Ni,Co,Cu)Se2Iso. m3 (2/m 3) : Pa3
2.EB.05aPyriteFeS2Iso. m3 (2/m 3) : Pa3
2.EB.05aSperrylitePtAs2Iso. m3 (2/m 3) : Pa3
2.EB.05aTrogtaliteCoSe2Iso. m3 (2/m 3) : Pa3
2.EB.05aVaesiteNiS2Iso. m3 (2/m 3) : Pa3
2.EB.05aVillamanínite(Cu,Ni,Co,Fe)S2Tric.
2.EB.05aDzharkeniteFeSe2Iso. m3 (2/m 3) : Pa3
2.EB.05aGaotaiiteIr3Te8Iso. m3 (2/m 3) : Pa3
2.EB.05a vCayeuxite
2.EB.10bAlloclasiteCo1-xFexAsSMon. 2 : P21
2.EB.10dCostibiteCoSbSOrth. mm2 : Pmn21
2.EB.10aFerroseliteFeSe2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.10aFrohbergiteFeTe2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.10cGlaucodot(Co0.50Fe0.50)AsSOrth. mm2 : Pmn21
2.EB.10aKulleruditeNiSe2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.10aMarcasiteFeS2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.10aMattagamiteCoTe2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.10eParacostibiteCoSbSOrth. mmm (2/m 2/m 2/m) : Pbca
2.EB.10ePararammelsbergiteNiAs2Orth. mmm (2/m 2/m 2/m) : Pbca
2.EB.10fOeniteCoSbAsOrth.
2.EB.10aPetříčekiteCuSe2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.15aAnduoite(Ru,Os)As2Orth.
2.EB.15aClinosaffloriteCoAs2Mon. 2/m : P21/m
2.EB.15aLöllingiteFeAs2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.15aNisbiteNiSb2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.15aOmeiite(Os,Ru)As2Orth.
2.EB.15cPaxiteCuAs2Mon. 2/m : P21/b
2.EB.15aRammelsbergiteNiAs2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.15aSafflorite(Co,Ni,Fe)As2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.15bSeinäjokite(Fe,Ni)(Sb,As)2Orth.
2.EB.20GudmunditeFeSbSMon. 2/m : P21/b
2.EB.20Osarsite(Os,Ru)AsSMon.
2.EB.20Ruarsite(Ru,Os)AsSMon.
2.EB.25 vaAntimony-bearing GersdorffiteNi(As,Sb)S
2.EB.25CobaltiteCoAsSOrth. mm2 : Pca21
2.EB.25GersdorffiteNiAsSIso. m3 (2/m 3) : Pa3
2.EB.25Hollingworthite(Rh,Pt,Pd)AsSIso. m3 (2/m 3) : Pa3
2.EB.25Irarsite(Ir,Ru,Rh,Pt)AsSIso. m3 (2/m 3) : Pa3
2.EB.25JolliffeiteNiAsSeIso. m3 (2/m 3) : Pa3
2.EB.25KrutoviteNiAs2Iso. 2 3 : P21 3
2.EB.25MaslovitePtBiTeIso. 2 3 : P21 3
2.EB.25MicheneritePdBiTeIso. 2 3 : P21 3
2.EB.25PadmaitePdBiSeIso. 4 3 2
2.EB.25PlatarsitePt(As,S)2Iso. m3 (2/m 3) : Pa3
2.EB.25TestibiopalladitePdSbTeIso.
2.EB.25TolovkiteIrSbSIso.
2.EB.25UllmanniteNiSbSIso. 2 3 : P21 3
2.EB.25WillyamiteCoSbS
2.EB.25ChangchengiteIrBiSIso. 2 3 : P21 3
2.EB.25MayingiteIrBiTeIso. m3 (2/m 3) : Pa3
2.EB.25KalungaitePdAsSeIso. m3 (2/m 3) : Pa3
2.EB.25MilotaitePdSbSeIso. 2 3 : P21 3
2.EB.25ParagersdorffiteNi(As,S)2Iso. m3 (2/m 3) : Pa3
2.EB.25OrthogersdorffiteNiAsSOrth. mm2 : Pca21
2.EB.25KvačekiteNiSbSeIso. 2 3 : P21 3
2.EB.30UrvantsevitePd(Bi,Pb)2Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
2.EB.35RheniiteReS2Tric. 1 : P1

Fluorescence of ArsenopyriteHide

Not fluorescent

Other InformationHide

Notes:
Decomposed by nitric acid with separation of arsenous acid and sulphur.

In a closed tube, at first gives a red sublimate of arsenic sulfide, then a black lustrous sublimate of metallic arsenic. In an open tube, gives sulphurous fumes and a white sublimate of arsenous acid.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Arsenopyrite in petrologyHide

An essential component of rock names highlighted in red, an accessory component in rock names highlighted in green.

Internet Links for ArsenopyriteHide

References for ArsenopyriteHide

Reference List:

Significant localities for ArsenopyriteHide

Showing 26 significant localities out of 10,747 recorded on mindat.org.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Bolivia
 
  • Cochabamba
    • Ayopaya Province
Collections of Alfredo Petrov and Dr. ...
Canada
 
  • British Columbia
    • Slocan Mining Division
      • Riondel
Grice et al. (1977) +1 other reference
  • Ontario
    • Hastings County
      • Marmora Township
Sabina (1965) +1 other reference
China
 
  • Hunan
    • Chenzhou
      • Yizhang Co.
        • Yaogangxian W-Sn ore field
Keqin Xu (1957) +8 other references
Czech Republic
 
  • Ústí nad Labem Region
    • Chomutov District
      • Vejprty
Roman Gramblicka collection
Ecuador
 
  • El Oro Province
    • Santa Rosa Canton
      • Birón
Collected by Alejandro Felix Gutierrez (2013)
France
 
  • Brittany
    • Côtes-d'Armor
      • Guingamp
        • Belle-Isle-en-Terre
          • Coat an Noz
Pierrot et al. (1975)
Ireland
 
  • Munster
    • Cork County
      • Sheeps Head Peninsula
Barry Flannery Collection
Italy
 
  • Tuscany
    • Lucca Province
      • Stazzema
        • Mulina
          • Calcaferro
Biagioni (2009)
Japan
 
  • Oita Prefecture
    • Bungo-Ono City
Sadanaga et al. (1974) +1 other reference
Kosovo
 
  • Mitrovica District
    • Mitrovica
      • Trepča complex
Joana Koà Odziejczyk et al. ( 2012) +4 other references
Norway
 
  • Vestfold
    • Larvik
      • Tvedalen
        • Tuften
Nordrum (2007)
Peru
 
  • Ancash
    • Bolognesi Province
      • Huallanca District
        • Huanzala
Econ Geol (1985)
    • Recuay Province
      • Ticapampa District
Mi.Rec. 28 (1997)
  • Huancavelica
    • Angaraes Province
Crowley et al. (1997)
Portugal
 
335-354 +11 other references
Russia
 
  • Primorsky Krai
    • Dalnegorsk Urban District
      • Dalnegorsk
Dobovol'skaya et al. (1990) +3 other references
Spain
 
  • Asturias
    • Belmonte de Miranda
Mesa et al. (2002) +2 other references
  • Extremadura
    • Cáceres
      • Almoharín
Calvo (2003)
  • La Rioja
USA
 
  • Connecticut
    • Fairfield County
      • Monroe
Mike Polletta and Jeremy Zolan field ...
    • Litchfield County
      • Roxbury
        • Mine Hill (Ore Hill)
Schairer (1931) +2 other references
      • Woodbury
        • Orenaug Hills
Identified by Jeremy Zolan
    • New Haven County
      • Seymour
Moritz (n.d.)
  • Maine
    • Kennebec County
      • Winslow
  • New York
    • Putnam County
      • Town of Kent
        • Pine Pond
New York State Museum Bull. 223 et al. (July-August 1919)
 
Mineral and/or Locality  
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