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Iridarsenite

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About IridarseniteHide

Formula:
(Ir,Ru)As2
Hardness:
5 - 5½
Crystal System:
Monoclinic
Name:
Named for the composition that include IRIDium and ARSENic.

Classification of IridarseniteHide

Approved
Approval Year:
1973
First Published:
1974
Approval History:
IMA1973-021
2.AC.45b

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
A : Alloys
C : Alloys of metalloids with PGE
2.12.4.5

2 : SULFIDES
12 : AmBnXp, with (m+n):p = 1:2
3.12.63

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

Pronounciation of IridarseniteHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of IridarseniteHide

Hardness:
5 - 5½ on Mohs scale
Hardness:
VHN100=488 - 606 kg/mm2 - Vickers

Optical Data of IridarseniteHide

Type:
Anisotropic
Anisotropism:
Weak but distinct
Bireflectance:
Weak to nil.
Reflectivity:
470nmR=47.2–46.9%
546nmR=45.4–46.1%
589nmR=44.9–46.6%
650nmR=41.4–44.0%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 47.2–46.9%.
Colour in reflected light:
Medium gray with brownish tint (in oil)

Chemical Properties of IridarseniteHide

Formula:
(Ir,Ru)As2
IMA Formula:
IrAs2
Common Impurities:
Os,Pt,Rh,Pd,S

Crystallography of IridarseniteHide

Crystal System:
Monoclinic
Cell Parameters:
a = 6.06 Å, b = 6.07 Å, c = 6.15 Å
β = 113.27°
Ratio:
a:b:c = 0.998 : 1 : 1.013
Unit Cell V:
207.82 ų (Calculated from Unit Cell)

Type Occurrence of IridarseniteHide

General Appearance of Type Material:
Inclisions to 60 um in rutheniridosmine
Place of Conservation of Type Material:
Geological Survey of Canada, 12160.
Canadian Museum of Nature, Ottawa, Canada.
Reference:
Harris, D.C. (1974) Ruthenarsenite and iridarsenite, two new minerals from the territory of Papua and New Guinea and associated irarsite, laurite and cubic iron-bearing platinum. The Canadian Mineralogist: 12: 280-284.

Synonyms of IridarseniteHide

Other Language Names for IridarseniteHide

Simplified Chinese:砷铱矿
Spanish:Iridarsenita

Relationship of Iridarsenite to other SpeciesHide

Structurally related to group(s):

Related Minerals - Nickel-Strunz GroupingHide

2.AC.TörnroositePd11As2Te2Iso. m3m (4/m 3 2/m) : Fd3m
2.AC.05aAtheneitePd2As0.75Hg0.25Hex. 6 m2 : P62m
2.AC.05bVincentitePd3AsTet.
2.AC.10cArsenopalladinitePd8(As,Sb)3Tric. 1 : P1
2.AC.10bMertieite-IIPd8Sb2.5As0.5Trig. 3m (3 2/m) : R3c
2.AC.10aStillwateritePd8As3Trig.
2.AC.15aIsomertieitePd11Sb2As2Iso. m3m (4/m 3 2/m) : Fd3m
2.AC.15bMertieite-IPd11(Sb,As)4Hex.
2.AC.15aMiessiitePd11Te2Se2Iso. m3m (4/m 3 2/m) : Fd3m
2.AC.20bPalarstanidePd5(Sn,As)2Hex.
2.AC.20aStibiopalladinitePd5Sb2Hex.
2.AC.20cMenshikovitePd3Ni2As3Hex. 6/m : P63/m
2.AC.25eMajakitePdNiAsHex.
2.AC.25aPalladoarsenidePd2AsMon. 2/m : P2/m
2.AC.25fPalladobismutharsenidePd2(As,Bi)Orth.
2.AC.25cPalladodymite(Pd,Rh)2AsOrth.
2.AC.25bRhodarsenide(Rh,Pd)2AsOrth.
2.AC.25dNaldrettitePd2SbOrth. mm2 : Cmc21
2.AC.30UM1999-02-As:NiRh(Rh,Ni)7As4
2.AC.30PolkanoviteRh12As7Hex.
2.AC.35aGenkinite(Pt,Pd,Rh)4Sb3Tet. 4 2 2
2.AC.35bUngavaitePd4Sb3Tet. 4 2 2 : P41 21 2
2.AC.40PolaritePd(Bi,Pb)Orth. mm2 : Cmc21
2.AC.45cBorishanskiitePd1+x(As,Pb)2 , x = 0-0.2Orth. mm2
2.AC.45aFrooditeα-PdBi2Mon. 2/m : B2/m

Related Minerals - Dana Grouping (8th Ed.)Hide

2.12.4.1ArsenopyriteFeAsSMon. 2/m : P21/b
2.12.4.2GudmunditeFeSbSMon. 2/m : P21/b
2.12.4.3Osarsite(Os,Ru)AsSMon.
2.12.4.4Ruarsite(Ru,Os)AsSMon.
2.12.4.6ClinosaffloriteCoAs2Mon. 2/m : P21/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

3.12.1Seinäjokite(Fe,Ni)(Sb,As)2Orth.
3.12.2LauriteRuS2Iso. m3 (2/m 3) : Pa3
3.12.3Ruthenarsenite(Ru,Ni)AsOrth.
3.12.4Anduoite(Ru,Os)As2Orth.
3.12.5Ruarsite(Ru,Os)AsSMon.
3.12.6XingzhongitePb2+Ir3+2S4Iso.
3.12.7RhodplumsiteRh3Pb2S2Trig.
3.12.8Cuprorhodsite(Cu1+0.5Fe3+0.5)Rh3+2S4Iso. m3m (4/m 3 2/m) : Fd3m
3.12.9KonderiteCu3Pb(Rh,Pt,Ir)8S16Hex. 6/m : P6/m
3.12.10Bowieite(Rh,Ir,Pt)2S3Orth. mmm (2/m 2/m 2/m)
3.12.11CherepanoviteRhAsOrth. mmm (2/m 2/m 2/m) : Pnma
3.12.12Hollingworthite(Rh,Pt,Pd)AsSIso. m3 (2/m 3)
3.12.13Vysotskite(Pd,Ni)STet.
3.12.14Vasilite(Pd,Cu)16(S,Te)7
3.12.15PalladseitePd17Se15Iso. m3m (4/m 3 2/m)
3.12.16Oosterboschite(Pd,Cu)7Se5Orth.
3.12.17TelluropalladinitePd9Te4Mon.
3.12.18TemagamitePd3HgTe3Trig. 3m : P3m1
3.12.19SopcheiteAg4Pd3Te4Orth.
3.12.20MicheneritePdBiTeIso. 2 3 : P21 3
3.12.21KotulskitePd(Te,Bi)Hex.
3.12.22Telargpalite(Pd,Ag)3(Te,Bi)Iso.
3.12.23Merenskyite(Pd,Pt)(Te,Bi)2Trig. 3m : P3m1
3.12.24PalladoarsenidePd2AsMon. 2/m : P2/m
3.12.25StillwateritePd8As3Trig.
3.12.26AtheneitePd2As0.75Hg0.25Hex. 6 m2 : P62m
3.12.27MajakitePdNiAsHex.
3.12.28PalarstanidePd5(Sn,As)2Hex.
3.12.29ArsenopalladinitePd8(As,Sb)3Tric. 1 : P1
3.12.30VincentitePd3AsTet.
3.12.31PalladobismutharsenidePd2(As,Bi)Orth.
3.12.32StibiopalladinitePd5Sb2Hex.
3.12.33Hexatestibiopanickelite(Pd,Ni)(Sb,Te)Hex.
3.12.34Sudburyite(Pd,Ni)SbHex.
3.12.35TestibiopalladitePdTe(Sb,Te)Iso.
3.12.36BorovskitePd3SbTe4Iso.
3.12.37IsomertieitePd11Sb2As2Iso. m3m (4/m 3 2/m) : Fd3m
3.12.38Mertieite-IPd11(Sb,As)4Hex.
3.12.39Mertieite-IIPd8Sb2.5As0.5Trig. 3m (3 2/m) : R3c
3.12.40SobolevskitePd(Bi,Te)Hex.
3.12.41Frooditeα-PdBi2Mon. 2/m : B2/m
3.12.42PolaritePd(Bi,Pb)Orth. mm2 : Cmc21
3.12.43UrvantsevitePd(Bi,Pb)2Tet.
3.12.44CooperitePtSTet. 4/mmm (4/m 2/m 2/m) : P42/mmc
3.12.45Braggite(Pt,Pd,Ni)STet.
3.12.46Kharaelakhite(Cu,Pt,Pb,Fe,Ni)9S8Orth. mmm (2/m 2/m 2/m) : Pmmm
3.12.47MalaniteCu1+(Ir3+Pt4+)S4Iso.
3.12.48Moncheite(Pt,Pd)(Te,Bi)2Trig.
3.12.49MaslovitePtBiTeIso. 2 3 : P21 3
3.12.50SperrylitePtAs2Iso. m3 (2/m 3) : Pa3
3.12.51PlatarsitePtAsSIso.
3.12.52GeversitePtSb2Iso. m3 (2/m 3) : Pa3
3.12.53DaomaniteCuPtAsS2Orth.
3.12.54Genkinite(Pt,Pd,Rh)4Sb3Tet. 4 2 2
3.12.55StumpflitePt(Sb,Bi)Hex.
3.12.56InsizwaitePt(Bi,Sb)2
3.12.57ErlichmaniteOsS2Iso. m3 (2/m 3) : Pa3
3.12.58Omeiite(Os,Ru)As2Orth.
3.12.59Osarsite(Os,Ru)AsSMon.
3.12.60Kashinite(Ir,Rh)2S3Orth.
3.12.61InaglyiteCu3Pb(Ir,Pt)8S16Hex.
3.12.62Cuproiridsite(Cu,Fe)Ir2S4Iso. m3m (4/m 3 2/m) : Fd3m
3.12.64Irarsite(Ir,Ru,Rh,Pt)AsSIso.
3.12.65TolovkiteIrSbSIso.

Other InformationHide

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

References for IridarseniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Harris, D.C. (1974) Ruthenarsenite and iridarsenite, two new minerals from the territory of Papua and New Guinea and associated irarsite, laurite and cubic iron-bearing platinum. The Canadian Mineralogist: 12: 280-284.
Fleischer, M., Pabst, A., Mandarino, J.A., Chao, G.Y., Cabri, L.J. (1976) New mineral names. American Mineralogist: 61: 174-186.

Internet Links for IridarseniteHide

Localities for IridarseniteHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
China
 
  • Tibet
    • Nagchu Prefecture (Naqu Prefecture)
      • Amdo Co. (Anduo Co.)
Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990
    • Shannan Prefecture (Lhokha Prefecture; Lhoka Prefecture)
      • Qusum Co. (Qusong Co.)
Wenji Bai, Shufeng Tao, Jingsui Yang, Qingsong Fang, Nicheng Shi and Guowu Li (2007): Acta Petrologica et Mineralogica 26(5), 418-428
Cuba
 
  • Holguín Province
Acta Geológica Hispánica, 1998, 33(1-4):351-371
Finland
 
  • North Ostrobothnia
    • Nivala
Kojonen K: K., Isomäki O.-P. 2005. PGEE-minerals and tarkianite (Cu,Fe)(Re,Mo)4S8 a new mineral species from Hitura mine, Nivala, Central Finland. 10th International Platinum Symposium: Platinum-group elements from genesis to benefication and enviromental impact, August 6-11 , 2005 Finland.
Greece
 
  • Epirus
    • Pindos Mtn
      • Pindos ophiolite complex
Argirios Kapsiotis, Tassos A. Grammatikopoulos, Basilios Tsikouras, Konstantin Hatzipanagiotou, Federica Zaccarini und Giorgio Garuti (2011): Mineralogy, composition and PGM of chromitites from Pefki, Pindos ophiolite complex (NW Greece): evidence for progressively elevated fAs conditions in the upper mantle sequence. Mineralogy and Petrology 101, 129-150.
Papua New Guinea (TL)
 
  • Northern Province (Oro Province)
    • Ioma area
Harris, D.C. (1974) Ruthenarsenite and iridarsenite, two new minerals from the Territory of Papua and New Guinea and associated irarsite, laurite and cubic iron-bearing platinum. The Canadian Mineralogist, 12:4, 280-284.
Russia
 
  • Bashkortostan
    • Uchalinsky District
Pavel M. Kartashov analytical data 2018
  • Chelyabinsk Oblast
    • Miass River
Zaykov, V. V., Melekestseva, I. Y., Zaykova, E. V., Kotlyarov, V. A., & Kraynev, Y. D. (2017). Gold and platinum group minerals in placers of the South Urals: Composition, microinclusions of ore minerals and primary sources. Ore Geology Reviews, 85, 299-320.
  • Krasnoyarsk Krai
Alexander V. Dedeev et al (2002) The PGE-Bearing Sulphide Ores of the Kingash Mafic-Ultramafic Differentiated Intrusion and Ore Processing Characteristics, East Sajan, Russia. 9th annual platinum symposium
    • Western Sayan range
Tolstyk, N., Krivenko, A., Pospelova, L. (1997): New compounds of Ir, Os and Ru with selenium, arsenic and tellurium. Eur. J. Mineral.: 9: 457–465; in: Jambor, J.L., Roberts, A.C. (1997): New mineral names. American Mineralogist: 82: 1263
South Africa
 
Minerals of South Africa
USA
 
  • Alaska
    • Bethel Census Area
      • Goodnews Bay
        • Salmon River - Red Mountain District
USGS Open-File Report 01-269
Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990; Fechner SA (1988) Mineral investigation of the Goodnews Bay mining district Alaska US Bureau of Mines Open File Report 1 88 230 p 2 sheets scales 1 250,000 1 63,360
USGS Open-File Report 01-269
 
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