Oberthürite
A valid IMA mineral species
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Formula:
Rh3Ni32S32
Specific Gravity:
5.195 (Calculated)
Crystal System:
Isometric
Member of:
Name:
Named in honor of Thomas Oberthür, geologist with the Bundesanstalt für Geowissenschaften und Rohstoffe (German Geological Survey). He is an expert on the geology, geochemistry and mineralogy of gold, platinum-group element and "coltan" deposits in Africa.
Co-described with torryweiserite.
Together with the latter suggested to be formed at ca. 500 °C, under moderate fS2 conditions, via "ordering of Rh-Ni-S nanoparticles in precursor Rh-bearing pentlandite during cooling".
Together with the latter suggested to be formed at ca. 500 °C, under moderate fS2 conditions, via "ordering of Rh-Ni-S nanoparticles in precursor Rh-bearing pentlandite during cooling".
Unique Identifiers
Mindat ID:
52582
Long-form identifier:
mindat:1:1:52582:4
GUID
(UUID V4):
(UUID V4):
6125f7d8-c690-40f4-939e-98afa0cd0ca8
IMA Classification of Oberthürite
Approved
Approval year:
2017
Classification of Oberthürite
2.BB.15
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
B : Metal Sulfides, M: S > 1: 1 (mainly 2: 1)
B : With Ni
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
B : Metal Sulfides, M: S > 1: 1 (mainly 2: 1)
B : With Ni
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 |
|---|---|---|
| Obt | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Obt | 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 Oberthürite
Streak:
couldn't be measured
Comment:
microhardness couldn't be measured
Density:
5.195 g/cm3 (Calculated)
Chemistry of Oberthürite
Mindat Formula:
Rh3Ni32S32
Elements listed:
Crystallography of Oberthürite
Crystal System:
Isometric
Cell Parameters:
a = 10.066(5) Å
Unit Cell V:
1,019.93 ų (Calculated from Unit Cell)
Comment:
Spacegroup: F43m
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.060 Å | (100) |
| 2.929 Å | (18) |
| 1.952 Å | (39) |
| 1.792 Å | (74) |
| 1.543 Å | (9) |
| 1.318 Å | (15) |
| 1.031 Å | (30) |
| 0.976 Å | (10) |
Comments:
From Type Description.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 3b: Earth’s earliest hydrosphere | >4.45 |
| 12 : Hadean hydrothermal subsurface sulfide deposits (see also #33) |
Type Occurrence of Oberthürite
General Appearance of Type Material:
grains, up to 100 × 100 μm, often closely associated with coldwellite, isoferroplatinum, zvyagintsevite, rhodian pentlandite, and torryweiserite
Place of Conservation of Type Material:
Type material is deposited in the mineralogical collections of the Canadian Museum of Nature, Gatineau, Quebec, Canada, catalogue number 87251
Associated Minerals at Type Locality:
Synonyms of Oberthürite
Relationship of Oberthürite to other Species
Member of:
Other Members of this group:
| Argentopentlandite | Ag(Fe,Ni)8S8 | Iso. m3m (4/m 3 2/m) : Fm3m |
| Cobaltpentlandite | Co9S8 | Iso. m3m (4/m 3 2/m) : Fm3m |
| Geffroyite | (Cu,Fe,Ag)9(Se,S)8 | Iso. m3m (4/m 3 2/m) : Fm3m |
| Pentlandite | (NixFey)Σ9S8 | Iso. m3m (4/m 3 2/m) : Fm3m |
| Shadlunite | (Pb,Cd)(Fe,Cu)8S8 | Iso. m3m (4/m 3 2/m) : Fm3m |
| Sugakiite | Cu(Fe,Ni)8S8 | Tet. 4/mmm (4/m 2/m 2/m) : P42/mnm |
Related Minerals - Strunz-mindat Grouping
| 2.BB. | Horomanite | Fe6Ni3S8 |
| 2.BB. | Samaniite | Cu2Fe5Ni2S8 |
| 2.BB. | UM2007-27-S:CuFeIrNiRh | (Ni,Fe,Cu,Rh,Ir)11S9 |
| 2.BB. | Arsenotučekite | Ni18Sb3AsS16 |
| 2.BB. | Hrabákite | Ni9PbSbS8 |
| 2.BB.05 | Heazlewoodite | Ni3S2 |
| 2.BB.05 | Oregonite | Ni2FeAs2 |
| 2.BB.05 | Vozhminite | (Ni,Co)4(As,Sb)S2 |
| 2.BB.05 | UM2007-30-S:Fe | Fe3S2 |
| 2.BB.10 | Arsenohauchecornite | Ni18Bi3AsS16 |
| 2.BB.10 | Bismutohauchecornite | Ni9Bi2S8 |
| 2.BB.10 | Hauchecornite | Ni9BiSbS8 |
| 2.BB.10 | Tellurohauchecornite | Ni9Bi(Te,Bi)S8 |
| 2.BB.10 | Tučekite | Ni9Sb2S8 |
| 2.BB.15 | Argentopentlandite | Ag(Fe,Ni)8S8 |
| 2.BB.15 | Cobaltpentlandite | Co9S8 |
| 2.BB.15 | Geffroyite | (Cu,Fe,Ag)9(Se,S)8 |
| 2.BB.15 | Godlevskite | (Ni,Fe)9S8 |
| 2.BB.15 | Kharaelakhite | (Cu,Pt,Pb,Fe,Ni)9S8 |
| 2.BB.15 | Manganoshadlunite | (Mn,Pb,Cd)(Cu,Fe)8S8 |
| 2.BB.15 | Pentlandite | (NixFey)Σ9S8 |
| 2.BB.15 | Shadlunite | (Pb,Cd)(Fe,Cu)8S8 |
| 2.BB.15 | Sugakiite | Cu(Fe,Ni)8S8 |
| 2.BB.15 | UM2002-26-S:FeNi | (Ni,Fe)9S8 |
| 2.BB.15 | Ferhodsite | (Fe,Rh,Ni,Ir,Cu,Pt)9S8 |
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 Oberthürite
mindat.org URL:
https://www.mindat.org/min-52582.html
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References for Oberthürite
Reference List:
Hålenius, U., Hatert, F., Pasero, M., Mills, S. J. (2017) New minerals and nomenclature modifications approved in 2017, CNMNC Newsletter No 40. Mineralogical Magazine, 81 (6) 1577-1581 doi:10.1180/minmag.2017.081.096p.1579
McDonald, Andrew M., Kjarsgaard, Ingrid M., Cabri, Louis J., Ross, Kirk C., Ames, Doreen E., Bindi, Luca, Good, David J. (2021) Oberthürite, Rh3(Ni,Fe)32S32 and torryweiserite, Rh5Ni10S16, two new platinum-group minerals from the Marathon deposit, Coldwell Complex, Ontario, Canada: Descriptions, crystal-chemical considerations, and comments on the geochemistry of rhodium. The Canadian Mineralogist, 59 (6) 1833-1863 doi:10.3749/canmin.2100014
Localities for Oberthürite
symbol to view information about a locality.
The 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).
All localities listed without proper references should be considered as questionable.
