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Argentopyrite

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Formula:
AgFe2S3
Colour:
Bronze-brown, tarnishing to lead-grey.
Lustre:
Metallic
Hardness:
3½ - 4
Specific Gravity:
4.25
Crystal System:
Monoclinic
Name:
Named for its relationship to pyrite and silver content.
Dimorph of:
This page provides mineralogical data about Argentopyrite.


Classification of Argentopyrite

Approved, 'Grandfathered' (first described prior to 1959)
2.CB.65

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
C : Metal Sulfides, M: S = 1: 1 (and similar)
B : With Zn, Fe, Cu, Ag, etc.
Dana 7th ed.:
2.9.13.2
2.9.13.2

2 : SULFIDES
9 : AmBnXp, with (m+n):p = 1:1
3.2.17

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

Physical Properties of Argentopyrite

Metallic
Transparency:
Opaque
Colour:
Bronze-brown, tarnishing to lead-grey.
Streak:
Grey.
Hardness:
3½ - 4 on Mohs scale
Hardness:
VHN100=225 - 242 kg/mm2 - Vickers
Tenacity:
Brittle
Fracture:
Irregular/Uneven
Density:
4.25 g/cm3 (Measured)    4.27 g/cm3 (Calculated)

Optical Data of Argentopyrite

Type:
Anisotropic
Anisotropism:
Strong - deep blue to pale blue-grey
Reflectivity:
400nmR1=20.5%R2= 29.4%
420nmR1=21.6%R2= 30.2%
440nmR1=22.7%R2= 30.8%
460nmR1=23.8%R2= 31.6%
480nmR1=24.6%R2= 32.2%
500nmR1=25.3%R2= 32.8%
520nmR1=25.8%R2= 33.5%
540nmR1=26.3%R2= 34.1%
560nmR1=26.8%R2= 34.8%
580nmR1=27.4%R2= 35.6%
600nmR1=28.1%R2= 36.3%
620nmR1=28.7%R2= 36.9%
640nmR1=29.4%R2= 37.5%
660nmR1=30.0%R2= 38.0%
680nmR1=30.4%R2= 38.4%
700nmR1=30.9%R2= 38.7%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 38.7%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Greyish to yellowish white

Chemical Properties of Argentopyrite

Formula:
AgFe2S3
Common Impurities:
Cu,As

Crystallography of Argentopyrite

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 6.6902(2) Å, b = 11.4497(4) Å, c = 6.4525(2) Å
β = 90.2420(8)°
Ratio:
a:b:c = 0.584 : 1 : 0.564
Unit Cell V:
494.26 ų
Z:
4
Twinning:
Pseudohexagonal twins, lamellar twins
Comment:
Space group P1121/n (non-standard setting). Pseudo-orthorhombic. Originally assumed to have space group Pmmn, 6.639, 11.463, 6.452 A.

X-Ray Powder Diffraction

Powder Diffraction Data:
d-spacingIntensity
5.746 (5)
3.603 (4)
3.320 (10)
3.316 (9)
3.104 (5)
1.927 (5)
1.807 (7)
Comments:
Měděnec, Czech Republic

Type Occurrence of Argentopyrite

Place of Conservation of Type Material:
ROM
Smithsonian

Other Language Names for Argentopyrite

Common Associates

Associated Minerals Based on Photo Data:
Proustite31 photos of Argentopyrite associated with Proustite on mindat.org.
Calcite8 photos of Argentopyrite associated with Calcite on mindat.org.
Pyrargyrite5 photos of Argentopyrite associated with Pyrargyrite on mindat.org.
Stephanite4 photos of Argentopyrite associated with Stephanite on mindat.org.
Fluorite4 photos of Argentopyrite associated with Fluorite on mindat.org.
Acanthite3 photos of Argentopyrite associated with Acanthite on mindat.org.
Arsenic3 photos of Argentopyrite associated with Arsenic on mindat.org.
Silver2 photos of Argentopyrite associated with Silver on mindat.org.
Baryte2 photos of Argentopyrite associated with Baryte on mindat.org.
Dyscrasite1 photo of Argentopyrite associated with Dyscrasite on mindat.org.

Related Minerals - Nickel-Strunz Grouping

2.CB.AgmantiniteAg2MnSnS4
2.CB.05aColoradoiteHgTe
2.CB.05aHawleyiteCdS
2.CB.05aMetacinnabarHgS
2.CB.05cPolhemusite(Zn,Hg)S
2.CB.05bSakuraiite(Cu,Zn,Fe)3(In,Sn)S4
2.CB.05aSphaleriteZnS
2.CB.05aStilleiteZnSe
2.CB.05aTiemanniteHgSe
2.CB.05UM1998-15-S:CuFeZnCu2Fe3Zn5S10
2.CB.05aRudashevskyite(Fe,Zn)S
2.CB.10aChalcopyriteCuFeS2
2.CB.10aEskeborniteCuFeSe2
2.CB.10aGalliteCuGaS2
2.CB.10bHaycockiteCu4Fe5S8
2.CB.10aLenaiteAgFeS2
2.CB.10bMooihoekiteCu9Fe9S16
2.CB.10bPutoraniteCu1.1Fe1.2S2
2.CB.10aRoquesiteCuInS2
2.CB.10bTalnakhiteCu9(Fe,Ni)8S16
2.CB.10aLaforêtiteAgInS2
2.CB.15aČernýiteCu2(Cd,Zn,Fe)SnS4
2.CB.15aFerrokësteriteCu2(Fe,Zn)SnS4
2.CB.15aHocartiteAg2(Fe2+,Zn)SnS4
2.CB.15aIdaiteCu5FeS6
2.CB.15aKësteriteCu2ZnSnS4
2.CB.15aKuramiteCu3SnS4
2.CB.15bMohiteCu2SnS3
2.CB.15aPirquitasiteAg2ZnSnS4
2.CB.15aStanniteCu2FeSnS4
2.CB.15cStannoiditeCu+6Cu2+2(Fe2+,Zn)3Sn2S12
2.CB.15aVelikiteCu2HgSnS4
2.CB.15cUM2006-11-S:CuFeGeZnCu8(Fe,Zn)3Ge2S12 (?)
2.CB.20ChatkaliteCu6FeSn2S8
2.CB.20MawsoniteCu6Fe2SnS8
2.CB.30ColusiteCu12VAs3S16
2.CB.30GermaniteCu13Fe2Ge2S16
2.CB.30GermanocolusiteCu26V2(Ge,As)6S32
2.CB.30NekrasoviteCu26V2(Sn,As,Sb)6S32
2.CB.30StibiocolusiteCu13V(Sb,Sn,As)3S16
2.CB.30Ovamboite Cu20(Fe,Cu,Zn)6W2Ge6S32
2.CB.30MaikainiteCu20(Fe,Cu)6Mo2Ge6S32
2.CB.35aHemusiteCu6SnMoS8
2.CB.35aKiddcreekiteCu6SnWS8
2.CB.35aPolkovicite(Fe,Pb)3(Ge,Fe)1-xS4
2.CB.35aRenierite(Cu1+,Zn)11Fe4(Ge4+,As5+)2S16
2.CB.35aVincienniteCu+7Cu2+3Fe2+2Fe3+2Sn(As,Sb)S16
2.CB.35aMorozeviczite(Pb,Fe)3Ge1-xS4
2.CB.35bCatamarcaiteCu6GeWS8
2.CB.40LautiteCuAsS
2.CB.45CadmoseliteCdSe
2.CB.45GreenockiteCdS
2.CB.45Wurtzite(Zn,Fe)S
2.CB.45RambergiteMnS
2.CB.45Buseckite(Fe,Zn,Mn)S
2.CB.55aCubaniteCuFe2S3
2.CB.55bIsocubaniteCuFe2S3
2.CB.60PicotpauliteTlFe2S3
2.CB.60RaguiniteTlFeS2
2.CB.65SternbergiteAgFe2S3
2.CB.70SulvaniteCu3VS4
2.CB.75VulcaniteCuTe
2.CB.80EmpressiteAgTe
2.CB.85MuthmanniteAuAgTe2

Related Minerals - Hey's Chemical Index of Minerals Grouping

3.2.1AcanthiteAg2S
3.2.3NaumanniteAg2Se
3.2.4AguilariteAg4SeS
3.2.5HessiteAg2Te
3.2.6EmpressiteAgTe
3.2.7StütziteAg5-xTe3, x = 0.24-0.36
3.2.8CervelleiteAg4TeS
3.2.9DervilliteAg2AsS2
3.2.10StromeyeriteAgCuS
3.2.11MckinstryiteAg5-xCu3+xS4
3.2.12JalpaiteAg3CuS2
3.2.13EucairiteAgCuSe
3.2.14CameroniteCu5-x(Cu,Ag)3+xTe10 (x = 0.43)
3.2.15Henryite(Cu,Ag)3+xTe2 , with x ~ 0.40
3.2.16SternbergiteAgFe2S3
3.2.18Geffroyite(Cu,Fe,Ag)9(Se,S)8
3.2.19ArgentopentlanditeAg(Fe,Ni)8S8

Related Minerals - Dana Grouping (8th Ed.)

2.9.13.1CubaniteCuFe2S3
2.9.13.3IsocubaniteCuFe2S3

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Industrial Uses:
Minor silver ore

References for Argentopyrite

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
von Waltershausen, W.S. (1866) Einige nachträgliche Bemerkungen über den Silberkies. Nachrichten von der Königlichen Gesellschaft der Wissenschaften und der Georg-Augusts-Universität: 9: 66-68.
Dana, J.D., Brush, G.J. (1868) 40A. Argentopyrite. in: A System of Mineralogy, Fifth Edition, John Wiley and Sons, New York.
Schrauf, A. (1871) Mineralogische Beobachtungen III. Sitzungsberichte der Mathematisch-Naturwissenschaftlichen Classe der Kaiserlichen Akademie der Wissenschaften: 114: 123-205.
Palache, C., Berman, H., Frondel, C. (1944) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged, 834pp.: 248.
Murdoch, J., Berry, L.G. (1954) X-ray measurements on argentopyrite. American Mineralogist: 39: 475–485.
Czamanske, G.K. (1969) The stability of argentopyrite and sternbergite. Economic Geology: 64: 459-461.
Czamanske, G.K., Larsen, R.R. (1969) The chemical identity and formula of argentopyrite and sternbergite. American Mineralogist: 54: 1198-1206.
Šrein, V., Řídkošil, T., Kašpar, P., Šourek, J. (1986) Argentopyrite and sternbergite from polymetallic veins of the skarn deposit Měděnec, Krušné hory Mts., Czechoslovakia. Neues Jahrbuch für Mineralogie, Abhandlungen: 154: 207–222.
Yang, H., Pinch, W.W., Downs, R.T. (2009) Crystal structure of argentopyrite, AgFe2S3, and its relationship with cubanite. American Mineralogist: 94: 1727-1730.

Internet Links for Argentopyrite

mindat.org URL:
https://www.mindat.org/min-299.html
Please feel free to link to this page.
Specimens:
The following Argentopyrite specimens are currently listed for sale on minfind.com.

Localities for Argentopyrite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Australia
 
  • New South Wales
    • Yancowinna Co.
Handbook of Mineralogy
L.Lawrence, A.R.Ramsden & I.T.Graham 1999. On oxidation of Dyscrasite and associated minerals of the Consols Lode, Broken Hill, New South Wales. Australian Journal of Mineralogy Vol.5, No.2, Dec.1999, pp. 63-68; Vera Munro-Smith (2006) Cobalt Mineralisation in Selected Australian Deposits. PhD thesis, University of Western Sydney.
  • Queensland
    • Mount Isa City Shire
Canadian Mineralogist (1984) 22, 493-498
No reference listed
Austria
 
  • Carinthia
    • Friesach - Hüttenberg area
      • Hüttenberg
G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995
  • Salzburg
    • Hohe Tauern
      • Rauris valley
        • Seidlwinkl valley
          • Hochtor area
Bergbau in Westkärnten
Bolivia
 
  • Potosí Department
    • Chayanta Province
[MinRec 32:469]
Canada
 
  • British Columbia
    • Greenwood Mining Division
      • Beaverdell
Robert O. Meyer collection, from Ty Balacko.
    • Slocan Mining Division
      • Sandon
Mauthner, M.H.F. et al. (1996) Minerals of the Silvana Mine Sandon British Columbia. Mineralogical Record, 27(6):433-438.
  • Ontario
    • Sudbury District
      • Garson Township
Ames, D.E., Kjarsgaard, I.M., and Douma, S.L., 2003, Sudbury Ni-Cu-PGE Ore Mineralogy Compilation: Sudbury Targeted Geoscience Initiative (TGI): Geological Survey of Canada, Open File 1787
Czech Republic
 
  • Bohemia (Böhmen; Boehmen)
    • Central Bohemia Region
Dr Gunter Grundmann collection, # 312.
    • Karlovy Vary Region
      • Krušné Hory Mts (Erzgebirge)
        • Jáchymov District (St Joachimsthal)
Am Min 39 (1954), 475; Lapis 3 (1988), 7
    • Ústí Region
      • Krušné Hory Mts (Erzgebirge)
        • Klášterec nad Ohří
No reference listed
- Hyrsl, J. & Korbel, P. (2009): Tschechien & Slowakei, Mineralien und Fundstellen. Page 60-75.
Finland
 
  • Western and Inner Finland Region
    • Jyväskylä
Hietanen, Sini (2015) Keski-Suomen granitoidikomplekssin malmiviitteet Hiekkapohjan alueella. Pro gradu-tutkielm, Kaivannaistiedekunta, Oulun Yliopisto 2015.
France
 
  • Grand Est
    • Bas-Rhin
      • Villé Valley
Wittern, Journée (1997): "Mineralien finden in den Vogesen", von Loga (Cologne), pp. 36-37.
    • Haut-Rhin
      • Ste Marie-aux-Mines (Markirch)
P&T N°23-24, H. BARI 1982, Minéralogie des filons du Neuenberg à Sainte Marie aux Mines (Haut-Rhin).
          • Sankt Jakob vein
Wittern, Journée: "Mineralien finden in den Vogesen", von Loga (Cologne), 1997
  • Provence-Alpes-Côte d'Azur
    • Hautes-Alpes
      • Orpierre
Le Cahier des Micromonteurs,(2), 3-13
Germany
 
  • Baden-Württemberg
    • Black Forest
      • Wieden
Handbook of Mineralogy
Aufschluss 71(6), 195-200
  • Hesse
    • Odenwald
      • Mühltal
        • Nieder-Beerbach
  • Lower Saxony
    • Harz
      • St Andreasberg District
        • St Andreasberg
No reference listed
No reference listed
  • Saxony
    • Erzgebirge
      • Annaberg District
        • Annaberg-Buchholz
          • Frohnau
            • Schreckenberg
Andreas Gerstenberg collection
          • Kleinrückerswalde
P Haas collection
      • Ehrenfriedersdorf
      • Freiberg District
        • Freiberg
Naumann, Zirkel: "Elemente der Mineralogie", 10th Ed., Leipzig (1898)
        • Siebenlehn
Andreas Gerstenberg collection
      • Johanngeorgenstadt District
Wittern: "Mineralfundorte in Deutschland", 2001
      • Marienberg District
        • Lauta
Wittern: "Mineralfundorte in Deutschland", 2001
        • Wolkenstein
Lapis, Jg 33 (2008), No.9, pag 26-27.
      • Schlema-Hartenstein District
        • Alberoda
Vollstädt,H. & Weiß,St. (1991): Mineralfundstellen Sächsisches Erzgebirge, München, S.26ff.
          • Shaft 366
P Haas collection
      • Schneeberg District
        • Neustädtel
Lapis 30(7/8):41-70 (2005)
Lapis 30(7/8):41-70 (2005)
Lapis 30(7/8):41-70 (2005)
      • Schwarzenberg District
        • Pöhla
Wittern: "Mineralfundorte in Deutschland", 2001
Greece
 
  • Aegean Islands Department (Aiyaíon)
    • Kykládes Prefecture
      • Cyclade Islands (Cyclades; Kikladhes; Nomos Kikladhon)
        • Tinos Island
Tombros, S.F. (2008): Later stages of evolution of an epithermal system: Au-Ag mineralization at Apigania Bay, Tinos, Island, Cyclades, Hellas, Greece. Min.Pet. (in press)
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
      • Lavrion District Mines
        • Agios Konstantinos [St Constantine] (Kamariza)
Meixner, H. & Paar, W. (1982): New observations on ore formation and weathering of the Kamariza deposit, Laurion, SE Attica (Greece). Special Publication of the Society for Geology Applied to Mineral Deposits 2 (Ore Genesis: State of the Art), 760-767.
Italy
 
  • Sardinia
    • Cagliari Province
      • Sinnai
Stara, P., Rizzo, R., Brizzi G., (1993): Sarrabus Miniere e Minerali. Edito a cura dell'EMSA e "varie associazioni mineralogiche", 208 pp.
Japan
 
  • Honshu Island
    • Kinki Region
      • Hyogo Prefecture
        • Shisou City
The Mineral Species of Japan (5th ed) Matsubara
Kazakhstan
 
  • Kostanay Province (Qostanay Oblysy; Kostanai Oblast')
    • Rudny
[World of Stones 12:13]; Evseev, A. A. (1995) Kazaknstan and Middle Asia. A brief Mineralogical Guide. World of Stone 8:24-30
Mexico
 
  • Chihuahua
    • Mun. de Aquiles Serdán
      • Santa Eulalia District
        • West Camp
          • Francisco Portillo
Peter Megaw Collection
Morocco
 
  • Drâa-Tafilalet Region
    • Ouarzazate Province
      • Tazenakht
        • Bou Azer District (Bou Azzer District)
          • Tamdrost
Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
Nigeria
 
  • Plateau State
    • Jos Plateau
Wolfgang Hampel, site visit /studies November 2007
Norway
 
  • Buskerud
    • Kongsberg
      • Kongsberg Silver Mining District
        • Overberget Mining Field
Kjell Gatedal collection and photo
Papua New Guinea
 
Noku, S.K., Akasaka, M. & Matsueda, H. (2011): The Crater Mountain Deposit, Papua New Guinea: Porphyry-related Au-Te System. Resource Geology, 61, 63-75.
Romania
 
  • Maramureș Co.
    • Baia Mare (Nagybánya)
      • Chiuzbaia (Kisbánya)
Papp, Gábor, Alan J. Criddle, Chris J. Stanley, László Kriston and Géza Nagy (2007): Parajamesonite revisited: background of the discreditation of an enigmatic mineral species. Swiss Journal of Geosciences, 100, 495-502.
Russia
 
  • Eastern-Siberian Region
    • Krasnoyarsk Territory (Krasnoyarsk Kray; Krasnoyarskii Krai)
      • Maimecha and Kotui Rivers Basin
N. V. Sorokhtina, A.M. Asavin, V.G .Senin (2010) K-bearing sulfides in carbonatites of the Guli massif of the Polar Siberia. Abstracts of XXVII International conference School «Geochemistry of Alkaline rocks». – Moscow-Koktebel’. pp. 240 pp.
Slovenia
 
  • Litija (Littai)
Scopolia - Journal of the Slovenian Museum of natural History - Mineralna bogastva Slovenije, p. 52 - 65, Ljubljana, 2006
Switzerland
 
  • Wallis (Valais)
    • Brig
      • Bitsch
Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 419.
      • Naters
Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 371.
    • Lötschen valley
      • Goppenstein
Mineralienlexikon der Schweiz, Wepf Verlag, 1998, ISBN 3-85977-200-7
UK
 
  • England
    • Cumbria
      • Alston Moor District
        • South Tynedale
          • Garrigill
Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990; Ixer, R.A. and Stanley, C.J. (1987): Proceedings of the Yorkshire Geological Society 46, 133-139.
USA
 
  • Alaska
    • Yukon-Koyukuk Borough
      • Iditarod District
U.S. Geological Survey, 2008, Alaska Resource Data File (ARDF): U.S. Geological Survey Open-File Report 2008-1225.
  • Colorado
    • Ouray Co.
      • San Juan Mts
        • Ouray District
Emmons and Becker (1885) Statistics and Technology of the precious Metals. Census reports Tenth census. June 1, 1880, Volume 13 By United States. Census office. 10th census, 1880, United States. Census Office
  • Idaho
    • Custer Co.
R&M 70:4 pp 242-263
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