Irarsite
A valid IMA mineral species
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About Irarsite
Formula:
(Ir,Ru,Rh,Pt)AsS
Colour:
Iron black
Lustre:
Metallic
Hardness:
6½
Specific Gravity:
11.92 (Calculated)
Crystal System:
Isometric
Member of:
Name:
The name reflects its composition: iridium, arsenic and sulfur. The related minerals osarsite, ruarsite, and platarsite are similarly named.
Unique Identifiers
Mindat ID:
2042
Long-form identifier:
mindat:1:1:2042:4
GUID
(UUID V4):
(UUID V4):
dad3c5c7-a69e-4e62-ae0e-fa2fe9fbb4cf
IMA Classification of Irarsite
Approved
IMA Formula:
IrAsS
Approval year:
1966
First published:
1966
Approval history:
IMA1966-028
Classification of Irarsite
2.EB.25
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.
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.
2.12.3.7
2 : SULFIDES
12 : AmBnXp, with (m+n):p = 1:2
2 : SULFIDES
12 : AmBnXp, with (m+n):p = 1:2
3.12.64
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
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
Mineral Symbols
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.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Symbol | Source | Reference |
---|---|---|
Irs | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Irs | The 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 Irarsite
Metallic
Transparency:
Opaque
Colour:
Iron black
Hardness:
6½ on Mohs scale
Hardness:
VHN100=976 - Vickers
Tenacity:
Brittle
Density:
11.92 g/cm3 (Calculated)
Optical Data of Irarsite
Reflectivity:
Wavelength | R |
---|---|
400nm | 47.6% |
440nm | 47.0% |
480nm | 46.6% |
520nm | 46.2% |
560nm | 45.6% |
600nm | 45.1% |
640nm | 44.6% |
680nm | 44.0% |
700nm | 43.7% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 47.6%.
Colour in reflected light:
grayish-white, with a bluish tint
Chemistry of Irarsite
Mindat Formula:
(Ir,Ru,Rh,Pt)AsS
Common Impurities:
Os,Fe
Crystallography of Irarsite
Crystal System:
Isometric
Class (H-M):
m3 (2/m 3) - Diploidal
Space Group:
Pa3
Setting:
Pa3
Cell Parameters:
a = 5.777 Å
Unit Cell V:
192.80 ų (Calculated from Unit Cell)
Z:
1
Morphology:
As grains, to 1 mm,
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.32 Å | (100) |
2.87 Å | (100) |
1.74 Å | (100) |
2.04 Å | (90) |
1.112 Å | (90) |
2.57 Å | (80) |
1.021 Å | (80) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 2: Planetesimal differentiation and alteration | 4.566-4.550 |
6 : Secondary asteroid phases | 4.566-4.560 |
Stage 4b: Highly evolved igneous rocks | >3.0 |
37 : Layered igneous intrusions and related PGE minerals |
Geological Setting:
Mineralogical Museum, Acad. Sci., USSR, Moscow.
Type Occurrence of Irarsite
Geological Setting of Type Material:
Associated with chromite in hortonolite dunite
Associated Minerals at Type Locality:
Reference:
Genkin, A.D., Zhuravlev, N.N., Troneva, N.V., Murav'eva (1966) Irarsite, a new sulfoarsenide of iridium, ruthenium, and plantinum. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 95(6): 700-712.
Synonyms of Irarsite
Other Language Names for Irarsite
Relationship of Irarsite to other Species
Member of:
Other Members of this group:
Andrieslombaardite | RhSbS | Iso. 2 3 : P21 3 |
Changchengite | IrBiS | Iso. 2 3 : P21 3 |
Cobaltite | CoAsS | Orth. mm2 : Pca21 |
Gersdorffite | NiAsS | Iso. m3 (2/m 3) : Pa3 |
Hollingworthite | (Rh,Pt,Pd)AsS | Iso. m3 (2/m 3) : Pa3 |
Jolliffeite | NiAsSe | Iso. m3 (2/m 3) : Pa3 |
Kalungaite | PdAsSe | Iso. m3 (2/m 3) : Pa3 |
Maslovite | PtBiTe | Iso. 2 3 : P21 3 |
Mayingite | IrBiTe | Iso. m3 (2/m 3) : Pa3 |
Michenerite | PdBiTe | Iso. 2 3 : P21 3 |
Milotaite | PdSbSe | Iso. 2 3 : P21 3 |
Padmaite | PdBiSe | Iso. 4 3 2 |
Platarsite | Pt(As,S)2 | Iso. m3 (2/m 3) : Pa3 |
Testibiopalladite | PdSbTe | Iso. |
Tolovkite | IrSbS | Iso. |
Ullmannite | NiSbS | Iso. 2 3 : P21 3 |
UM1991-19-Se:AsCo | (Co,Ni)AsSe | Iso. m3 (2/m 3) : Pm3 |
Willyamite | CoSbS |
Forms a series with:
Common Associates
Associated Minerals Based on Photo Data:
5 photos of Irarsite associated with Hollingworthite | (Rh,Pt,Pd)AsS |
5 photos of Irarsite associated with Laurite | RuS2 |
4 photos of Irarsite associated with Iridosmine | (Os,Ir) |
3 photos of Irarsite associated with Sperrylite | PtAs2 |
3 photos of Irarsite associated with Spinel | MgAl2O4 |
2 photos of Irarsite associated with Tolovkite | IrSbS |
2 photos of Irarsite associated with Platinum | Pt |
1 photo of Irarsite associated with Isoferroplatinum | Pt3Fe |
1 photo of Irarsite associated with Inaglyite | Cu3Pb(Ir,Pt)8S16 |
1 photo of Irarsite associated with Osmiridium | (Ir,Os,Ru) |
Related Minerals - Strunz-mindat Grouping
2.EB. | Iridarsenite | (Ir,Ru)As2 |
2.EB. | Selenolaurite | RuSe2 |
2.EB. | Andrieslombaardite | RhSbS |
2.EB. | Kanatzidisite | (SbBiS3)2Te2 |
2.EB.05a | Aurostibite | AuSb2 |
2.EB.05b | Bambollaite | Cu(Se,Te)2 |
2.EB.05a | Cattierite | CoS2 |
2.EB.05a | Erlichmanite | OsS2 |
2.EB.05a | Fukuchilite | Cu3FeS8 |
2.EB.05a | Geversite | PtSb2 |
2.EB.05a | Hauerite | MnS2 |
2.EB.05a | Insizwaite | Pt(Bi,Sb)2 |
2.EB.05a | Krut'aite | CuSe2 |
2.EB.05a | Laurite | RuS2 |
2.EB.05a | Penroseite | (Ni,Co,Cu)Se2 |
2.EB.05a | Pyrite | FeS2 |
2.EB.05a | Sperrylite | PtAs2 |
2.EB.05a | Trogtalite | CoSe2 |
2.EB.05a | Vaesite | NiS2 |
2.EB.05a | Villamanínite | (Cu,Ni,Co,Fe)S2 |
2.EB.05a | Dzharkenite | FeSe2 |
2.EB.05a | Gaotaiite | Ir3Te8 |
2.EB.05a v | Cayeuxite | |
2.EB.10b | Alloclasite | Co1-xFexAsS |
2.EB.10d | Costibite | CoSbS |
2.EB.10a | Ferroselite | FeSe2 |
2.EB.10a | Frohbergite | FeTe2 |
2.EB.10c | Glaucodot | (Co0.50Fe0.50)AsS |
2.EB.10a | Kullerudite | NiSe2 |
2.EB.10a | Marcasite | FeS2 |
2.EB.10a | Mattagamite | CoTe2 |
2.EB.10e | Paracostibite | CoSbS |
2.EB.10e | Pararammelsbergite | NiAs2 |
2.EB.10f | Oenite | CoSbAs |
2.EB.10a | Petříčekite | CuSe2 |
2.EB.15a | Anduoite | (Ru,Os)As2 |
2.EB.15a | Clinosafflorite | CoAs2 |
2.EB.15a | Löllingite | FeAs2 |
2.EB.15a | Nisbite | NiSb2 |
2.EB.15a | Omeiite | (Os,Ru)As2 |
2.EB.15c | Paxite | CuAs2 |
2.EB.15a | Rammelsbergite | NiAs2 |
2.EB.15a | Safflorite | (Co,Ni,Fe)As2 |
2.EB.15b | Seinäjokite | (Fe,Ni)(Sb,As)2 |
2.EB.20 | Arsenopyrite | FeAsS |
2.EB.20 | Gudmundite | FeSbS |
2.EB.20 | Osarsite | (Os,Ru)AsS |
2.EB.20 | Ruarsite | (Ru,Os)AsS |
2.EB.25 va | Antimony-bearing Gersdorffite | Ni(As,Sb)S |
2.EB.25 | Cobaltite | CoAsS |
2.EB.25 | Gersdorffite | NiAsS |
2.EB.25 | Hollingworthite | (Rh,Pt,Pd)AsS |
2.EB.25 | Jolliffeite | NiAsSe |
2.EB.25 | Krutovite | NiAs2 |
2.EB.25 | Maslovite | PtBiTe |
2.EB.25 | Michenerite | PdBiTe |
2.EB.25 | Padmaite | PdBiSe |
2.EB.25 | Platarsite | Pt(As,S)2 |
2.EB.25 | Testibiopalladite | PdSbTe |
2.EB.25 | Tolovkite | IrSbS |
2.EB.25 | Ullmannite | NiSbS |
2.EB.25 | Willyamite | CoSbS |
2.EB.25 | Changchengite | IrBiS |
2.EB.25 | Mayingite | IrBiTe |
2.EB.25 | Kalungaite | PdAsSe |
2.EB.25 | Milotaite | PdSbSe |
2.EB.25 | Paragersdorffite | Ni(As,S)2 |
2.EB.25 | Orthogersdorffite | NiAsS |
2.EB.25 | Kvačekite | NiSbSe |
2.EB.30 | Urvantsevite | Pd(Bi,Pb)2 |
2.EB.35 | Rheniite | ReS2 |
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.
Internet Links for Irarsite
mindat.org URL:
https://www.mindat.org/min-2042.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Irarsite
Localities for Irarsite
Locality List
- 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.
All localities listed without proper references should be considered as questionable.
Algeria | |
| Schulze (1998) |
Argentina | |
| Mineralogical Magazine 1997 61 : 861-877 +3 other references |
Australia | |
| Yang et al. (1993) |
| Hudson (1986) |
| Prichard et al. (2013) |
| Grguric (2003) |
Austria | |
| Kolitsch (2015) |
| S.Schwabl (2016) +2 other references |
| Malitch et al. (2001) +2 other references |
| Malitch et al. (2002) |
Melcher+Mali (1998) | |
Brazil | |
| Prichard et al. (2001) |
| Garuti et al. (2005) +1 other reference |
| Knight (2014) |
| 33rd International Geological Congress (2008) |
| 33rd International Geological Congress (2008) |
33rd International Geological Congress (2008) | |
Garuti et al. (2012) | |
| Portella +3 other references |
| Almeida et al. (2007) |
Brenner et al (1990) | |
| 33rd International Geological Congress (2008) |
| 33rd International Geological Congress (2008) |
Bulgaria | |
| Цинцов (1998) |
| Anthony et al. (1990) |
| González-Jiménez et al. (2015) |
Canada | |
| Hora et al. (2011) |
| Alfredo Petrov collection |
Nixon et al. (1990) +1 other reference | |
Nixon et al. (1990) | |
Alfredo Petrov collection +1 other reference | |
| Hulbert et al. (1998) |
| Chen +3 other references |
| Ames et al. (TGI) |
| Dare et al. (2010) +1 other reference |
| Ames et al. (TGI) |
Warren (2013) | |
| LeFort (2012) |
| Ames et al. (2003) |
Ames et al. (TGI) | |
| Rucklidge (1969) +1 other reference |
| Ames et al. (2017) |
| Wilson et al. (2013) |
Chile | |
| González-Jiménez et al. (2016) |
Galdames et al. (2010) +1 other reference | |
China | |
| Wenfeng Zhu and Youbin Liang (2000) +1 other reference |
| Bilun Luo (1979) +1 other reference |
Zuxiang Yu (1995) +1 other reference | |
Yu Zuxiang (1995) | |
| Jingbin Wang et al. (1998) |
| Anthony et al. (1990) |
| Guo et al. (2016) +1 other reference |
| Yang et al. (2018) |
| Zhu et al. (2016) |
| Hercule Shen |
| Min Liu (2002) +2 other references |
Costa Rica | |
| Federica Zaccarini et al. (2010) |
Cuba | |
| Gervilla et al. (2005) |
| Pujol-Solà et al. (2018) |
Gevilla et al. (2005) | |
González-Jiménez et al. (2011) | |
González-Jiménez et al. (2010) | |
Dominican Republic | |
| Proenza et al. (2007) +2 other references |
Ecuador | |
| Barron et al. (2024) |
Egypt | |
| Ahmed et al. (2003) |
Ethiopia | |
| Pavel.M. Kartashov (n.d.) |
| T.L. Evstigneyeva et al. (1992) |
| Cabri et al. (1981) |
Finland | |
Törroos Ragnar +1 other reference | |
| 33rd International Geological Congress (2008) +1 other reference |
| Kari Kojonen (2012) |
Kojonen et al. (2014) | |
| Stanislav S. Gornostayev (2000) |
| Barkov et al. (1999) +1 other reference |
| Gervilla |
| Mutanen (1997) |
| Fröclich et al. (2017) +1 other reference |
| Hytönen (1999) |
| Econ Geol (1995) |
| Economic Geology (1986) +1 other reference |
France | |
| Ducluzaux B. (2022) |
| 33rd International Geological Congress (2008) |
| Jan Pasava (ed) +1 other reference |
| Auge et al. (1995) |
Greece | |
| Tsikouras et al. (2016) |
| Tsoupas et al. (2008) |
| Tsikouras et al. (2016) |
| Argirios Kapsiotis et al. (2011) |
| Auge (1985) +1 other reference |
Kapsiotis et al. (2006) | |
Kapsiotis et al. (2006) | |
| Garuti et al. (1997) |
India | |
| Alapieti et al. (2005) +1 other reference |
| Devaraju et al. (2014, January) |
| Mineralogical Magazine 1997 61 : 902-906 +1 other reference |
Italy | |
| Econ Geol (1986) +1 other reference |
Ivory Coast | |
| Gouedji et al. (2014) |
Japan | |
| Kadota et al. (2008) |
| Nishio-Hamane et al. (2018) |
| Urashima et al (1982) |
| Urashima et al (1982) |
| NISHIO–HAMANE et al. (2022) |
NISHIO–HAMANE et al. (2022) | |
| Dr Daisuke Nishio-Hamane +1 other reference |
NISHIO–HAMANE et al. (2022) | |
| NISHIO–HAMANE et al. (2022) |
| NISHIO–HAMANE et al. (2022) |
| NISHIO–HAMANE et al. (2022) |
| NISHIO–HAMANE et al. (2019) |
Kazakhstan | |
| doi.org (n.d.) +1 other reference |
| Saveliev et al. (2023) |
Saveliev et al. (2023) | |
Kenya | |
| Schulze (1998) |
Madagascar | |
| Grieco et al. (2010) |
| McDonald et al. (1999) |
Mauritania | |
| Berger et al. (2013) |
Mexico | |
| Australian Research Council Centre of ... |
Mongolia | |
| www.dmitrenkogg.narod.ru (n.d.) |
Myanmar | |
| 5th International Platinum Symposium ... +1 other reference |
Norway | |
| Nilsson et al. (1998) |
| Nilsson (1990) |
| Nilsson et al. (1998) |
Papua New Guinea | |
| Cabri et al. (2022) |
| Bull. Soc. Franç. Minéralo. ... |
Philippines | |
| Oberthür et al. (2017) |
Russia | |
| Pavel M. Kartashov analytical data 2018 |
| Kiseleva +3 other references |
Airiyants et al. (2022) | |
| Spiridonov et al. (2018) |
| Britvin et al. (1998) +2 other references |
Zaykov et al. (2017) | |
| Gornostayev et al. (1999) |
| Rudashevskiy et al. (1985) +1 other reference |
| Kolotilina et al. (2019) |
| Podlipsky et al. (2015) |
Kolotilina et al. (2019) | |
| Tolstykh et al. (2000) |
| Sidorov et al. (2021) |
| Sidorov et al. (2004) +3 other references |
Vlasov et al. (2002) | |
Cabri et al. (2022) | |
| Stepanov et al. (2021) |
| Tony Nikischer specimen and analysis +1 other reference |
| Novakov et al. (2021) |
| Tolstykh et al. (2009) |
| Zhmodik et al. (2016) +1 other reference |
| Евгений А. Власов et al. (2021) |
... | |
Alexander V. Dedeev et al (2002) | |
| Barkov et al. (2018) +2 other references |
Barkov et al. (2018) | |
| Gabov (2010) |
Groshev +6 other references | |
Groshev +6 other references | |
Groshev +6 other references | |
Groshev +7 other references | |
Groshev +6 other references | |
| Grokhovskaya et al. (2009) |
Vymazalová et al. (2020) | |
Yury L. Voytekhovsky (2008) | |
Grokhovskaya et al. (2000) | |
| Puzik (2019) |
| Shcheka et al. (1991) +1 other reference |
| Grokhovskaya et al. (2005) |
Grishaenko et al. (2007) | |
| A. Yu. Barkov et al. +1 other reference |
Barkov et al. (2001) | |
| Лавров (2013) +1 other reference |
[World of Stones 12:49] | |
| Kiseleva et al. (2014) |
| Hercule Shen |
| Stepanov et al. (2019) |
| Garuti et al. (2002) |
| Мурзин et al. (2020) |
| Zaccarini et al. (2008) |
| 9th International platinum symposium Chromite-PGE mineralization in the Uktus Alaskan-Type Complex (Central Urals,) +1 other reference |
Gurskaya (2002) | |
| Oidup et al. (2012) |
| Jan Pašava et al. (2011) |
| Jan Pašava et al. (2011) |
Kojonen et al. (2003, April) +2 other references | |
Saudi Arabia | |
| Prichard et al. (2008) |
Serbia | |
| Tarkian M et al. (1997) |
Krstic et al. (1997) | |
Sierra Leone | |
| Bowles et al. (2018) |
Slovakia | |
| Radvanec et al. (2016) |
South Africa | |
... | |
| Tischler et al. (1981) +1 other reference |
| McCreesh et al. (2018) |
| Melcher et al. (2005) |
Cairncross et al. (1995) | |
Cabri et al. (1975) +1 other reference | |
| Cairncross et al. (1995) |
| Yudovskaya et al. (2011) |
Sutherland et al. (2013) | |
Holwell et al. (2006) +1 other reference | |
Cairncross et al. (1995) | |
| Cairncross et al. (1995) |
Cairncross et al. (1995) | |
| Cairncross et al. (1995) |
Cairncross et al. (1995) | |
Junge et al. (2014) | |
Cairncross et al. (1995) | |
Cairncross et al. (1995) | |
Spain | |
| Mineralogy and Petrology: 56: 25-50. |
Baurier-Aymat +7 other references | |
Baurier-Aymat +7 other references | |
Gervilla et al. (2002) | |
| Madon et al. (1991) +3 other references |
Sweden | |
| Mikael Jansson () |
Tanzania | |
| Evans et al. (2012) |
Turkey | |
| Akbulut et al. (2010) |
| Kozlu et al. (2010) |
| Uysal (2008) +1 other reference |
| N. Jb. Mineral. 185 (2009) +1 other reference |
UK | |
| Power et al. (2004) |
| Power et al. (2000) |
| Anthony et al. (1990) |
Anthony et al. (1990) | |
- (1985) +3 other references | |
Prichard et al. (1988) +2 other references | |
Ukraine | |
| Gornostayev et al. (2002) |
USA | |
| USGS Open-File Report 01-269 +1 other reference |
Fechner SA (1988) +1 other reference | |
Min Mag (1997) | |
| Belkin et al. (2021) |
| Van Nostrand Reinholt Press: 63. +2 other references |
| Van Nostrand Reinholt Press: 64. +2 other references |
| Van Nostrand Reinholt Press: 64. +2 other references |
| McSwiggen (1999) |
| Lyon et al. (1997) |
| Smith and Barnes (2011) |
| Smith and Barnes (2011) |
Vietnam | |
| Wang et al. (2023) |
Zimbabwe | |
| Allan H. Wilson and Martin D. Prendergast (2001) +2 other references |
| Nashwa (2008) |
Quick NavTopAbout IrarsiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Tumet river, Asosa Zone, Benishangul-Gumuz Region, Ethiopia