Laurite
A valid IMA mineral species - grandfathered
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About Laurite
Formula:
RuS2
Colour:
Black
Lustre:
Metallic
Hardness:
7 - 7½
Specific Gravity:
6.43
Crystal System:
Isometric
Member of:
Name:
Named for Laura Louisa Henrietta Rupe Joy (1833-1929). The mineral was named by Wöhler in 1866 as a compliment to the wife of his personal friend, Charles Arad Joy, American chemist at Columbia University in New York City, USA.
Unique Identifiers
Mindat ID:
2344
Long-form identifier:
mindat:1:1:2344:9
Similar Names
| Lasurite (of Haidinger) | A synonym of Azurite | |
| Laueite | A valid IMA mineral species - grandfathered | Mn2+Fe23+(PO4)2(OH)2 · 8H2O |
| Lautite | A valid IMA mineral species - grandfathered | CuAsS |
| Lazurite | A valid IMA mineral species | Na7Ca(Al6Si6O24)(SO4)(S3) · H2O |
| Liraite | A valid IMA mineral species | NaCa2Mn22+[Fe3+Fe2+]Mn22+(PO4)6(H2O)2 |
IMA Classification of Laurite
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Ru2+(S2)2-
Classification of Laurite
2.EB.05a
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.
2.12.1.10
2 : SULFIDES
12 : AmBnXp, with (m+n):p = 1:2
2 : SULFIDES
12 : AmBnXp, with (m+n):p = 1:2
3.12.2
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 for Standard |
|---|---|---|
| Lrt | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Lrt | 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 Laurite
Metallic
Transparency:
Opaque
Colour:
Black
Streak:
Dark grey
Hardness:
7 - 7½ on Mohs scale
Hardness:
VHN25=2870 kg/mm2 - Vickers
Tenacity:
Very brittle
Cleavage:
Perfect
{111}
{111}
Fracture:
Sub-Conchoidal
Density:
6.43 g/cm3 (Measured) 6.39 g/cm3 (Calculated)
Optical Data of Laurite
Type:
Isotropic
Colour in reflected light:
white to gray, bluish
Chemistry of Laurite
Mindat Formula:
RuS2
Elements listed:
Common Impurities:
Os,Rh,Ir,Fe
Crystallography of Laurite
Crystal System:
Isometric
Class (H-M):
m3(2/m3) - Diploidal
Space Group:
Pa3
Setting:
Pa3
Cell Parameters:
a = 5.6135 Å
Unit Cell V:
176.89 ų (Calculated from Unit Cell)
Z:
4
Morphology:
octahedral, cubic, and pyritohedral crystals, rounded grains
Comment:
Pa-3
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0010195 | Laurite | Lutz H D, Muller B, Schmidt T, Stingl T (1990) Structure refinement of pyrite-type ruthenium disulfide, RuS2, and ruthenium diselenide, RuSe2 Acta Crystallographica C46 2003-2005 | ![]() | 1990 | 0 | 293 | |
| 0017724 | Laurite | Oftedal I (1928) Uber die Kristallstrukturen der verbindungen RuS2, OsS2, MnTe2 und AuSb2. Mit einem Anhang uber die Gitterkonstant von Pyrit Zeitschrift fur Physikalische Chemie 135 291-299 | 1928 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.81 Å | (vs) |
| 3.29 Å | (vs) |
| 3.24 Å | (s) |
| 1.982 Å | (s) |
| 1.082 Å | (s) |
| 1.287 Å | (ms) |
| 1.256 Å | (ms) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 3a: Earth’s earliest Hadean crust | >4.50 |
| 7 : Ultramafic igneous rocks | |
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 36 : Carbonatites, kimberlites, and related igneous rocks | |
| 37 : Layered igneous intrusions and related PGE minerals | |
| Stage 5: Initiation of plate tectonics | <3.5-2.5 |
| 38 : Ophiolites |
Geological Setting:
Ultramafic intrusives and derived placers.
Type Occurrence of Laurite
Other Language Names for Laurite
Relationship of Laurite to other Species
Member of:
Other Members of Pyrite Group:
| Aurostibite | AuSb2 | Iso. m3(2/m3) : Pa3 |
| Cattierite | CoS2 | Iso. m3(2/m3) : Pa3 |
| Dzharkenite | FeSe2 | Iso. m3(2/m3) : Pa3 |
| Erlichmanite | OsS2 | Iso. m3(2/m3) : Pa3 |
| Fukuchilite | Cu3FeS8 | Iso. m3(2/m3) : Pa3 |
| Gaotaiite | Ir3Te8 | Iso. m3(2/m3) : Pa3 |
| Geversite | PtSb2 | Iso. m3(2/m3) : Pa3 |
| Hauerite | MnS2 | Iso. m3(2/m3) : Pa3 |
| Insizwaite | PtBi2 | Iso. m3(2/m3) : Pa3 |
| Kruťaite | CuSe2 | Iso. m3(2/m3) : Pa3 |
| Penroseite | (Ni,Co,Cu)Se2 | Iso. m3(2/m3) : Pa3 |
| Pyrite | FeS2 | Iso. m3(2/m3) : Pa3 |
| Sperrylite | PtAs2 | Iso. m3(2/m3) : Pa3 |
| Trogtalite | CoSe2 | Iso. m3(2/m3) : Pa3 |
| Vaesite | NiS2 | Iso. m3(2/m3) : Pa3 |
| Villamanínite | (Cu,Ni,Co,Fe)S2 | Tric. |
Forms a series with:
Common Associates
Associations Based on Photo Data:
| 11 photos of Laurite associated with Isoferroplatinum | Pt3Fe |
| 8 photos of Laurite associated with Native Iridium | (Ir,Os,Ru) |
| 7 photos of Laurite associated with Rutheniridosmine | (Ir,Os,Ru) |
| 7 photos of Laurite associated with Spinel | MgAl2O4 |
| 7 photos of Laurite associated with Irarsite | (Ir,Ru,Rh,Pt)AsS |
| 5 photos of Laurite associated with Native Osmium | (Os,Ir,Ru) |
| 5 photos of Laurite associated with Hollingworthite | (Rh,Pt,Pd)AsS |
| 4 photos of Laurite associated with 'Polyxene' | (Pt,Fe,Cu,Ni,Pd,Rh) |
| 4 photos of Laurite associated with Tolovkite | IrSbS |
| 4 photos of Laurite associated with Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
Related Minerals - Strunz-mindat Grouping
| 2.EB. | Selenolaurite | RuSe2 |
| 2.EB. | Andrieslombaardite | RhSbS |
| 2.EB. | Iridarsenite | (Ir,Ru)As2 |
| 2.EB. | Kanatzidisite | (SbBiS3)2Te2 |
| 2.EB.05a | Vaesite | NiS2 |
| 2.EB.05a | Hauerite | MnS2 |
| 2.EB.05a | Gaotaiite | Ir3Te8 |
| 2.EB.05a | Penroseite | (Ni,Co,Cu)Se2 |
| 2.EB.05a | Fukuchilite | Cu3FeS8 |
| 2.EB.05a | Villamanínite | (Cu,Ni,Co,Fe)S2 |
| 2.EB.05a | Erlichmanite | OsS2 |
| 2.EB.05a | Sperrylite | PtAs2 |
| 2.EB.05a | Geversite | PtSb2 |
| 2.EB.05a | Cattierite | CoS2 |
| 2.EB.05a | Aurostibite | AuSb2 |
| 2.EB.05a | Trogtalite | CoSe2 |
| 2.EB.05a v | 'Cayeuxite' | |
| 2.EB.05a | Kruťaite | CuSe2 |
| 2.EB.05a | Pyrite | FeS2 |
| 2.EB.05a | Insizwaite | PtBi2 |
| 2.EB.05b | Bambollaite | Cu(Se,Te)2 |
| 2.EB.05a | Dzharkenite | FeSe2 |
| 2.EB.10a | Marcasite | FeS2 |
| 2.EB.10e | Paracostibite | CoSbS |
| 2.EB.10f | Oenite | CoSbAs |
| 2.EB.10e | Pararammelsbergite | NiAs2 |
| 2.EB.10a | Mattagamite | CoTe2 |
| 2.EB.10a | Frohbergite | FeTe2 |
| 2.EB.10d | Costibite | CoSbS |
| 2.EB.10b | Alloclasite | Co1-xFexAsS |
| 2.EB.10c | Glaucodot | (Co0.50Fe0.50)AsS |
| 2.EB.10a | Petříčekite | CuSe2 |
| 2.EB.10a | Kullerudite | NiSe2 |
| 2.EB.10a | Ferroselite | FeSe2 |
| 2.EB.15b | Seinäjokite | FeSb2 |
| 2.EB.15a | Rammelsbergite | NiAs2 |
| 2.EB.15a | Clinosafflorite | CoAs2 |
| 2.EB.15c | Paxite | CuAs2 |
| 2.EB.15a | Nisbite | NiSb2 |
| 2.EB.15a | Löllingite | FeAs2 |
| 2.EB.15a | Safflorite | (Co,Ni,Fe)As2 |
| 2.EB.15a | Omeiite | OsAs2 |
| 2.EB.15a | Anduoite | RuAs2 |
| 2.EB.20 | Arsenopyrite | FeAsS |
| 2.EB.20 | Ruarsite | (Ru,Os)AsS |
| 2.EB.20 | Osarsite | (Os,Ru)AsS |
| 2.EB.20 | Gudmundite | FeSbS |
| 2.EB.25 | Mayingite | IrBiTe |
| 2.EB.25 | Maslovite | PtBiTe |
| 2.EB.25 | Paragersdorffite | Ni(As,S)2 |
| 2.EB.25 | Orthogersdorffite | NiAsS |
| 2.EB.25 | Sulfopadmaite | PdBiS |
| 2.EB.25 | Jolliffeite | NiAsSe |
| 2.EB.25 | Cobaltite | CoAsS |
| 2.EB.25 | Guixiangite | NiBiS |
| 2.EB.25 | Testibiopalladite | PdSbTe |
| 2.EB.25 va | 'Antimony-bearing Gersdorffite' | Ni(As,Sb)S |
| 2.EB.25 | Kalungaite | PdAsSe |
| 2.EB.25 | Hollingworthite | (Rh,Pt,Pd)AsS |
| 2.EB.25 | Michenerite | PdBiTe |
| 2.EB.25 | Gersdorffite | NiAsS |
| 2.EB.25 | Milotaite | PdSbSe |
| 2.EB.25 | Tolovkite | IrSbS |
| 2.EB.25 | 'Platarsite' | Pt(As,S)2 |
| 2.EB.25 | Willyamite | CoSbS |
| 2.EB.25 | Changchengite | IrBiS |
| 2.EB.25 | Kvačekite | NiSbSe |
| 2.EB.25 | Krutovite | NiAs2 |
| 2.EB.25 | Padmaite | PdBiSe |
| 2.EB.25 | Ullmannite | NiSbS |
| 2.EB.25 | Irarsite | (Ir,Ru,Rh,Pt)AsS |
| 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.
Industrial Uses:
Ruthenium ore
Internet Links for Laurite
mindat.org URL:
https://www.mindat.org/min-2344.html
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References for Laurite
Reference List:
Oftedal, Ivar (1928) Über die Kristallstrukturen der Verbindungen RuS2, OsS2, MnTe2 und AuSb2. Zeitschrift für Physikalische Chemie, 135 (1). 291-299 doi:10.1515/zpch-1928-13519
Bannister, F. A. (1932) Determination of minerals in platinum concentrates from the Transvaal by X-ray methods. Mineralogical Magazine and Journal of the Mineralogical Society, 23 (138) 188-206 doi:10.1180/minmag.1932.023.138.05
Leonard, B. F., Desborough, George A., Page, Norman J (1969) Ore microscopy and chemical composition of some laurites. American Mineralogist, 54 (9-10) 1330-1346
Lutz, H. D.; Willich, P. (1977) Gitterschwingungsspektren. XVI. FIR‐Spektren und Schwingungsanalyse von Dichalkogeniden und Diphosphiden des Eisens, Rutheniums, Osmiums und Platins. Zeitschrift für anorganische und allgemeine Chemie, 428 (1). 199-203 doi:10.1002/zaac.19774280124
Bowles, J. F. W., Atkin, D., Lambert, J. L. M., Deans, T., Phillips, R. (1983) The chemistry, reflectance, and cell size of the erlichmanite (OsS2)-laurite (RuS2) series. Mineralogical Magazine, 47 (345) 465-471 doi:10.1180/minmag.1983.047.345.07
Ohnenstetter, Daniel, Watkinson, David H., Jones, Peter C., Talkington, Raymond W. (1986) Cryptic compositional variation in laurite and enclosing chromite from the Bird River Sill, Manitoba. Economic Geology, 81 (5) 1159-1168 doi:10.2113/gsecongeo.81.5.1159
Lutz, H. D., Müller, B., Schmidt, Th., Stingl, Th. (1990) Structure refinement of pyrite-type ruthenium disulfide, RuS2, and ruthenium diselenide, RuSe2. Acta Crystallographica Section C Crystal Structure Communications, 46 (11) 2003-2005 doi:10.1107/s0108270190001925
Garuti, G., Zaccarini, F., Economou-Eliopoulos, M. (1999) Paragenesis and composition of laurite from chromitites of Othrys (Greece): implications for Os-Ru fractionation in ophiolitic upper mantle of the Balkan peninsula. Mineralium Deposita, 34 (3). 312-319 doi:10.1007/s001260050206
Brenan, J. M., Andrews, D. (2001) High-temperature stability of laurite and Ru-Os-Ir alloy and their role in PGE fractionation in mafic magmas: Erratum. The Canadian Mineralogist, 39 (6). 1747-1748 doi:10.2113/gscanmin.39.6.1747
Brenan, J. M., Andrews, D., Brenan, J. M., Andrews, D. (2001) High-Temperature Stability of Laurite and Ru-Os-Ir Alloy and Their Role in PGE Fractionation in Mafic Magmas. The Canadian Mineralogist, 39 (2). 341-360 doi:10.2113/gscanmin.39.2.341
Andrews, David R. A., Brenan, J. M. (2002) Phase-equilibrium constraints on the magmatic origin of laurite + Ru-Os-Ir alloy. The Canadian Mineralogist, 40 (6). 1705-1716 doi:10.2113/gscanmin.40.6.1705
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. The Canadian Mineralogist, 41 (2) 331-352 doi:10.2113/gscanmin.41.2.331
Hattori, K. H., Cabri, L. J., Johanson, B., Zientek, M. L. (2004) Origin of placer laurite from Borneo: Se and As contents, and S isotopic compositions. Mineralogical Magazine, 68 (2) 353-368 doi:10.1180/0026461046820192
González-Jiménez, JoséM., Gervilla, Fernando, Proenza, Joaquín A., Kerestedjian, Thomas, Augé, Thierry, Bailly, Laurent (2009) Zoning of laurite (RuS2)erlichmanite (OsS2): implications for the origin of PGM in ophiolite chromitites. European Journal of Mineralogy, 21 (2) 419-432 doi:10.1127/0935-1221/2009/0021-1921
Barkov, Andrei Y, Nikiforov, Andrey A, Tolstykh, Nadezhda D, Shvedov, Gennadiy I., Korolyuk, Vladimir N (2017) Compounds of Ru–Se–S, alloys of Os–Ir, framboidal Ru nanophases, and laurite–clinochlore intergrowths in the Pados-Tundra complex, Kola Peninsula, Russia. European Journal of Mineralogy, 29 (4) 613-621 doi:10.1127/ejm/2017/0029-2666
Malitch, K.N.; Belousova, E.A.; Griffin, W.L.; Badanina, I.Yu.; Knauf, V.V.; O'Reilly, S.Y.; Pearson, N.J. (2017) Laurite and zircon from the Finero chromitites (Italy): New insights into evolution of the subcontinental mantle. Ore Geology Reviews, 90. doi:10.1016/j.oregeorev.2017.06.027
Prichard, Hazel M., Barnes, Sarah-Jane, Fisher, Peter C., Pagé, Philippi, Zientek, Michael L. (2017) Laurite and Associated PGM In the Stillwater Chromitites: Implications For Processes of Formation, and Comparisons With Laurite In the Bushveld and Ophiolitic Chromitites. The Canadian Mineralogist, 55 (1) 121-144 doi:10.3749/canmin.1600006
Zaccarini, Federica, Garuti, Giorgio (2020) Zoned Laurite from the Merensky Reef, Bushveld Complex, South Africa: “Hydrothermal” in Origin? Minerals, 10 (4). 373 doi:10.3390/min10040373
Kitahara, Ginga, Yoshiasa, Akira, Ishimaru, Satoko, Terai, Kunihisa, Tokuda, Makoto, Nishio-Hamane, Daisuke, Tanaka, Takahiro, Sugiyama, Kazumasa (2023) Crystal structures of rhodium-containing erlichmanite–laurite solid solutions (Os1–x–yRuxRhyS2: x = 0.09–0.60, y = 0.07–0.10) with unique compositional dependence. Mineralogical Magazine, 87 (3) 396-406 doi:10.1180/mgm.2022.139
Localities for Laurite
Showing 368 localities.
Locality List
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- This locality has estimated coordinates.
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? - 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).
All localities listed without proper references should be considered as questionable.
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Verkhneivinsk, Novouralsk, Sverdlovsk Oblast, Russia