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 8th ed.:

2.12.4.4

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

Hey's CIM Ref.:

3.12.5

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 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.

Symbol	Source	Reference
Rua	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
Rua	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 RuarsiteHide

Lustre:

Metallic

Transparency:

Opaque

Colour:

Dark lead-gray

Streak:

Greyish black

Hardness:

6 - 7 on Mohs scale

Hardness:

VHN₅₀=893 kg/mm² - Vickers

Comment:

VHN = 893 (50 g load) low % Os grains; 734 (50 g load) for 14% Os.

Tenacity:

Brittle

Cleavage:

None Observed

Density:

7.08 g/cm³ (Calculated)

Optical Data of RuarsiteHide

Anisotropism:

Distinct, bluish gray to light reddish.

Bireflectance:

Bireflectant in oil

Reflectivity:

Wavelength	R
480nm	43.4%
546nm	44.1%
589nm	43.8%
656nm	45.1%

Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 45.1%.

Colour in reflected light:

Grayish white

Internal Reflections:

None

Comments:

Pale yellowish white to pale grayish yellow-white.

Chemistry of RuarsiteHide

Mindat Formula:

(Ru,Os)AsS

Elements listed:

As, Os, Ru, S - search for minerals with similar chemistry

Common Impurities:

Os,Ir,Pt

Crystallography of RuarsiteHide

Crystal System:

Monoclinic

Cell Parameters:

a = 5.931 Å, b = 5.915 Å, c = 6.003 Å
β = 112.46°

Ratio:

a:b:c = 1.003 : 1 : 1.015

Unit Cell V:

194.62 Å³ (Calculated from Unit Cell)

Twinning:

None observed

Comment:

Point Group: n.d.; Space Group: n.d.

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
4.03 Å	(10)
3.79 Å	(100)
3.47 Å	(2)
2.96 Å	(50)
2.89 Å	(1)
2.78 Å	(60)
2.74 Å	(70)
2.65 Å	(5)
2.61 Å	(1)
2.55 Å	(50)
2.52 Å	(30)
2.49 Å	(40)
2.28 Å	(25)
2.16 Å	(30)
2.09 Å	(20)
2.02 Å	(30)
2.01 Å	(60)
1.89 Å	(100)
1.868 Å	(80)
1.832 Å	(60)
1.810 Å	(30)
1.762 Å	(25)
1.748 Å	(20)
1.696 Å	(60)
1.658 Å	(50)
1.606 Å	(10)
1.588 Å	(50)
1.450 Å	(25)
1.392 Å	(30)
1.363 Å	(1)
1.324 Å	(40)
1.268 Å	(35)
1.231 Å	(15)
1.196 Å	(5)
1.173 Å	(5)
1.151 Å	(25)
1.139 Å	(45)

Comments:

ICDD 27-568 (synthetic)

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Near-surface Processes
26 : Hadean detrital minerals
High-𝑇 alteration and/or metamorphism
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])
Stage 4b: Highly evolved igneous rocks	>3.0
37 : Layered igneous intrusions and related PGE minerals

Type Occurrence of RuarsiteHide

Type Locality:

ⓘ Anduo Cr deposit, Amdo Co. (Anduo Co.), Nagchu Prefecture (Naqu Prefecture), Tibet, China

General Appearance of Type Material:

Irregular grains or as aggregates (100-150 µm).

Place of Conservation of Type Material:

Museum of Geology, China.

Geological Setting of Type Material:

In chromium ore from an Alpine-type ultramafic and in placers derived from the weathered ultramafics.

Associated Minerals at Type Locality:

Reference:

Yu, T., Chou, H. (1979) Ruarsite, a new mineral. Kexue Tongbao [Science Bulletin]: 24(7): 310-316 (in Chinese).

Download:

http://rruff.info/rruff_1.0/uploads/CSB24_310.pdf

Other Language Names for RuarsiteHide

German:Ruarsit

Simplified Chinese:硫砷钌矿

Spanish:Ruarsita

Relationship of Ruarsite to other SpeciesHide

Member of:

Arsenopyrite Group

Other Members of this group:

Arsenopyrite	FeAsS	Mon. 2/m : P2₁/b
Glaucodot	(Co_0.50Fe_0.50)AsS	Orth. mm2 : Pmn2₁
Gudmundite	FeSbS	Mon. 2/m : P2₁/b
Osarsite	(Os,Ru)AsS	Mon.

Related Minerals - Strunz-mindat Grouping Hide

2.EB.	Iridarsenite	(Ir,Ru)As₂	Mon. 2/m : P2₁/b
2.EB.	Selenolaurite	RuSe₂	Iso. m3 (2/m 3) : Pa3
2.EB.	Andrieslombaardite	RhSbS	Iso. 2 3 : P2₁ 3
2.EB.	Kanatzidisite	(SbBiS₃)₂Te₂	Mon. 2/m : P2₁/m
2.EB.05a	Aurostibite	AuSb₂	Iso. m3 (2/m 3) : Pa3
2.EB.05b	Bambollaite	Cu(Se,Te)₂	Tet.
2.EB.05a	Cattierite	CoS₂	Iso. m3 (2/m 3) : Pa3
2.EB.05a	Erlichmanite	OsS₂	Iso. m3 (2/m 3) : Pa3
2.EB.05a	Fukuchilite	Cu₃FeS₈	Iso. m3 (2/m 3) : Pa3
2.EB.05a	Geversite	PtSb₂	Iso. m3 (2/m 3) : Pa3
2.EB.05a	Hauerite	MnS₂	Iso. m3 (2/m 3) : Pa3
2.EB.05a	Insizwaite	Pt(Bi,Sb)₂	Iso. m3 (2/m 3) : Pa3
2.EB.05a	Krut'aite	CuSe₂	Iso. m3 (2/m 3) : Pa3
2.EB.05a	Laurite	RuS₂	Iso. m3 (2/m 3) : Pa3
2.EB.05a	Penroseite	(Ni,Co,Cu)Se₂	Iso. m3 (2/m 3) : Pa3
2.EB.05a	Pyrite	FeS₂	Iso. m3 (2/m 3) : Pa3
2.EB.05a	Sperrylite	PtAs₂	Iso. m3 (2/m 3) : Pa3
2.EB.05a	Trogtalite	CoSe₂	Iso. m3 (2/m 3) : Pa3
2.EB.05a	Vaesite	NiS₂	Iso. m3 (2/m 3) : Pa3
2.EB.05a	Villamanínite	(Cu,Ni,Co,Fe)S₂	Tric.
2.EB.05a	Dzharkenite	FeSe₂	Iso. m3 (2/m 3) : Pa3
2.EB.05a	Gaotaiite	Ir₃Te₈	Iso. m3 (2/m 3) : Pa3
2.EB.05a v	Cayeuxite
2.EB.10b	Alloclasite	Co_1-xFe_xAsS	Mon. 2 : P2₁
2.EB.10d	Costibite	CoSbS	Orth. mm2 : Pmn2₁
2.EB.10a	Ferroselite	FeSe₂	Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.10a	Frohbergite	FeTe₂	Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.10c	Glaucodot	(Co_0.50Fe_0.50)AsS	Orth. mm2 : Pmn2₁
2.EB.10a	Kullerudite	NiSe₂	Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.10a	Marcasite	FeS₂	Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.10a	Mattagamite	CoTe₂	Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.10e	Paracostibite	CoSbS	Orth. mmm (2/m 2/m 2/m) : Pbca
2.EB.10e	Pararammelsbergite	NiAs₂	Orth. mmm (2/m 2/m 2/m) : Pbca
2.EB.10f	Oenite	CoSbAs	Orth.
2.EB.10a	Petříčekite	CuSe₂	Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.15a	Anduoite	(Ru,Os)As₂	Orth.
2.EB.15a	Clinosafflorite	CoAs₂	Mon. 2/m : P2₁/m
2.EB.15a	Löllingite	FeAs₂	Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.15a	Nisbite	NiSb₂	Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.15a	Omeiite	(Os,Ru)As₂	Orth.
2.EB.15c	Paxite	CuAs₂	Mon. 2/m : P2₁/b
2.EB.15a	Rammelsbergite	NiAs₂	Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.15a	Safflorite	(Co,Ni,Fe)As₂	Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.15b	Seinäjokite	(Fe,Ni)(Sb,As)₂	Orth.
2.EB.20	Arsenopyrite	FeAsS	Mon. 2/m : P2₁/b
2.EB.20	Gudmundite	FeSbS	Mon. 2/m : P2₁/b
2.EB.20	Osarsite	(Os,Ru)AsS	Mon.
2.EB.25 va	Antimony-bearing Gersdorffite	Ni(As,Sb)S
2.EB.25	Cobaltite	CoAsS	Orth. mm2 : Pca2₁
2.EB.25	Gersdorffite	NiAsS	Iso. m3 (2/m 3) : Pa3
2.EB.25	Hollingworthite	(Rh,Pt,Pd)AsS	Iso. m3 (2/m 3) : Pa3
2.EB.25	Irarsite	(Ir,Ru,Rh,Pt)AsS	Iso. m3 (2/m 3) : Pa3
2.EB.25	Jolliffeite	NiAsSe	Iso. m3 (2/m 3) : Pa3
2.EB.25	Krutovite	NiAs₂	Iso. 2 3 : P2₁ 3
2.EB.25	Maslovite	PtBiTe	Iso. 2 3 : P2₁ 3
2.EB.25	Michenerite	PdBiTe	Iso. 2 3 : P2₁ 3
2.EB.25	Padmaite	PdBiSe	Iso. 4 3 2
2.EB.25	Platarsite	Pt(As,S)₂	Iso. m3 (2/m 3) : Pa3
2.EB.25	Testibiopalladite	PdSbTe	Iso.
2.EB.25	Tolovkite	IrSbS	Iso.
2.EB.25	Ullmannite	NiSbS	Iso. 2 3 : P2₁ 3
2.EB.25	Willyamite	CoSbS
2.EB.25	Changchengite	IrBiS	Iso. 2 3 : P2₁ 3
2.EB.25	Mayingite	IrBiTe	Iso. m3 (2/m 3) : Pa3
2.EB.25	Kalungaite	PdAsSe	Iso. m3 (2/m 3) : Pa3
2.EB.25	Milotaite	PdSbSe	Iso. 2 3 : P2₁ 3
2.EB.25	Paragersdorffite	Ni(As,S)₂	Iso. m3 (2/m 3) : Pa3
2.EB.25	Orthogersdorffite	NiAsS	Orth. mm2 : Pca2₁
2.EB.30	Urvantsevite	Pd(Bi,Pb)₂	Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
2.EB.35	Rheniite	ReS₂	Tric. 1 : P1

Other InformationHide

Magnetism:

Non-Magnetic

Notes:

Insoluble in 1:1 HCl.

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 RuarsiteHide

mindat.org URL:

https://www.mindat.org/min-3471.html
Please feel free to link to this page.

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External Links:

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Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

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References for RuarsiteHide

Reference List:

Yu, T., Chou, H. (1979) Ruarsite, a new mineral. Kexue Tongbao [Science Bulletin]: 24(7): 310-316 (in Chinese).

Fleischer, M., Cabri, L. J., Chao, G. Y., Pabst, A. (1980) New mineral names. American Mineralogist, 65. 1065-1070

Malitch, K.N., Junk, S.A., Thalhammer, O.A.R., Melcher, F., Knauf, V.V., Pernicka, E., Stumpfl, E.F. (2003) Laurite and ruarsite from podiform chromitites at Kraubath and Hochgrössen, Austria: new insights from osmium isotopes. The Canadian Mineralogist: 41: 331-352.

(2023) Ruarsite. Handbook of Mineralogy. Mineralogical Society of America

Localities for RuarsiteHide

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.


Algeria
Tamanrasset Province (Tamanghasset Province) Tazrouk District Tazrouk ⓘ Timoletine	Augé et al. (2012)

Austria
Styria Leoben District ⓘ Kraubath an der Mur	Malitch et al. (2001) +2 other references
Sankt Stefan ob Leoben Mitterberg ⓘ Unnamed chromite pit	Malitch et al. (2002)
ⓘ Sommergraben	Melcher+Mali (1998)

Brazil
Bahia ⓘ Campo Formoso ultramafic complex	Garuti et al. (2005) +1 other reference

Canada
Ontario Greater Sudbury Broder Township ⓘ Kelley Lake	Ames et al. (TGI)
Kenora District Ring of Fire BMA527861 Area ⓘ Black Label deposit	Musa Karkus (2010)
Thunder Bay District ⓘ Coldwell complex	Liferovich & Mitchell pers. comm. L. ...
ⓘ Marathon deposit	Ames et al. (2017)
ⓘ W horizon	Good et al. (2017)

Chile
Araucanía Cautín Province ⓘ La Cabaña	González-Jiménez et al. (2016)

China (TL)
Tibet Nagchu Prefecture (Naqu Prefecture) Amdo Co. (Anduo Co.) ⓘ Anduo Cr deposit (TL)	Yu Tsu-hsiang and Chou Hsueh-tsi (1979) +1 other reference

Costa Rica
Guanacaste Province Nicoya Canton ⓘ Santa Elena ultramafic Nappe ?	Federica Zaccarini et al. (2010)

Finland
ⓘ Lapland	Törnoos Ragnar
Enontekiö ⓘ Miessijoki River	33rd International Geological Congress (2008)

Greece
Thessaly Larissa Farsala Eretria ⓘ Tsangli mine	Tsikouras et al. (2016)
Trikala Meteora ⓘ Pefki	Argirios Kapsiotis et al. (2011)

India
Karnataka Davanagere District Shimoga schist belt ⓘ Hanumalapur Complex	Alapieti et al. (2005) +1 other reference
Odisha Jajapur (Jajpur) District Sukinda ultramafic complex Sukinda Valley Sukinda Mines ⓘ Katpal chromite mine	Raju et al. (2007)

Kazakhstan
Aktobe Region Kargaly District ⓘ Kempirsai Cr deposit	doi.org (n.d.) +1 other reference
Main ore field Dzharlybutak Ore Group ⓘ Almaz-Zhemchuzhina deposit	Saveliev et al. (2023)
ⓘ Geofizicheskoe-VII deposit	Saveliev et al. (2023)

Papua New Guinea
Oro Province ⓘ Aikora River	Cabri et al. (2022)

Philippines
Visayas Eastern Visayas Region Samar Island ⓘ Llorente river	Oberthür et al. (2017)

Russia
Buryatia Okinsky District Ulan-Sar’dag Ophiolite ⓘ Kitoy River placers	Airiyants et al. (2022)
Irkutsk Oblast Uda–Biryusa district ⓘ Ognit complex	Shvedov et al. (2017) +1 other reference
ⓘ Tartai Massif	Podlipsky et al. (2015)
Krasnoyarsk Krai Taymyrskiy Autonomous Okrug Taimyr Peninsula Putoran Plateau Noril'sk ⓘ Talnakh Cu-Ni Deposit	Gritsenko et al. (2022)
Murmansk Oblast ⓘ Fedorovo-Pansky massif (Pana layered complex)	Gabov (2010)
Sayan Mountains ⓘ Il’chir ophiolite belt	Kiseleva et al. (2014)
Sverdlovsk Oblast Nizhnyaya Tura ⓘ Veresovka River	Stepanov et al. (2019)
Tuva Kaa-Khemsky District Kaakhem ophiolite belt ⓘ Kundus placer	Oidup et al. (2012)

South Africa
Limpopo Sekhukhune District Municipality Fetakgomo Tubatse Local Municipality Burgersfort Sekhukhuneland ⓘ Driekop mine	Oberthür et al. (2008)
North West Bojanala Platinum District Municipality Rustenburg Local Municipality ⓘ Rustenburg	Hart et al. (1989)

Spain
Andalusia Málaga Ojén ⓘ Ojén lherzolite massif	Mineralogy and Petrology: 56: 25-50.
ⓘ Arroyo de los Caballos	Baurier-Aymat +7 other references
ⓘ Cerro del Algarrobo	Baurier-Aymat +7 other references
ⓘ Serranía de Ronda	Gervilla et al. (2002)

Tanzania
Njombe Region ⓘ Nkenga complex	Evans et al. (2012)

Turkey
Kahramanmaraş Province ⓘ Elbistan-Kahramanmaraş podiform ophiolitic chromitites	Uysal (2008)

Ukraine
Cherkasy Oblast Zvenyhorodka Raion ⓘ Kapitanov Cr deposit	Gornostayev et al. (2002)

USA
Oregon Jackson County Applegate Mining District ⓘ Kubli Ranch placer	Lyon et al. (1997)
Pennsylvania Chester County ⓘ West Nottingham Township	Smith and Barnes (2011)

Zimbabwe
Midlands Zvishavane District Zvishavane (Shabani; Shabanie; Shavani) ⓘ Mimosa Mine	Nashwa (2008)

Sperrylite	Serpentine Subgroup	Rutile	Ruthenosmiridium	Ruthenarsenite
Ruarsite	Pyrrhotite	Pyrite	Osmium	Molybdenite
Magnetite	Löllingite	Laurite	Laurite	Iridosmine
Iridarsenite	Irarsite	Ilmenite	Gold	Garnet Group
Galena	Galena	Chromite	Chlorite Group	Chalcopyrite
Anduoite

Ruarsite

About RuarsiteHide

Unique IdentifiersHide

IMA Classification of RuarsiteHide

Classification of RuarsiteHide