Cherepanovite
A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.
About Cherepanovite
Formula:
RhAs
Colour:
Gray-white
Lustre:
Metallic
Hardness:
6
Specific Gravity:
9.72 (Calculated)
Crystal System:
Orthorhombic
Name:
For Vladimir Aleksandrovich Cherepanov (1927-1983) Russian geologist and mineralogist, Karpinskii All-Union Research Institute of Geology, St. Petersburg, Russia.
Unique Identifiers
Mindat ID:
990
Long-form identifier:
mindat:1:1:990:0
GUID
(UUID V4):
(UUID V4):
d6dc8307-2311-46ad-b778-2a2e64079dde
IMA Classification of Cherepanovite
Approved
First published:
1985
Classification of Cherepanovite
2.CC.15
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
C : Metal Sulfides, M: S = 1: 1 (and similar)
C : With Ni, Fe, Co, PGE, etc.
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
C : Metal Sulfides, M: S = 1: 1 (and similar)
C : With Ni, Fe, Co, PGE, etc.
2.8.17.2
2 : SULFIDES
8 : AmXp, with m:p = 1:1
2 : SULFIDES
8 : AmXp, with m:p = 1:1
3.12.11
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.
Symbol | Source | Reference |
---|---|---|
Cpv | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Cherepanovite
Metallic
Transparency:
Opaque
Colour:
Gray-white
Streak:
Grayish black
Hardness:
6 on Mohs scale
Hardness:
VHN50=726 - 754 kg/mm2 - Vickers
Cleavage:
Distinct/Good
One distinct direction
One distinct direction
Density:
9.72 g/cm3 (Calculated)
Optical Data of Cherepanovite
Anisotropism:
Green to gray-brown
Reflectivity:
Wavelength | R1 | R2 |
---|---|---|
420nm | 39.2% | 40.5% |
440nm | 39.6% | 41.0% |
460nm | 40.3% | 41.9% |
480nm | 41.0% | 42.9% |
500nm | 41.9% | 43.8% |
520nm | 42.7% | 44.7% |
540nm | 43.6% | 45.5% |
560nm | 44.1% | 46.1% |
580nm | 44.5% | 46.6% |
600nm | 44.9% | 47.1% |
620nm | 45.1% | 47.3% |
640nm | 45.2% | 47.4% |
660nm | 45.3% | 47.6% |
680nm | 45.5% | 47.6% |
700nm | 45.4% | 47.6% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 47.6%.
R1 shown in black, R2 shown in red
Colour in reflected light:
White with an orange tint
Pleochroism:
Weak
Comments:
In yellow to pinkish hue and bluish white.
Chemistry of Cherepanovite
Mindat Formula:
RhAs
Elements listed:
Common Impurities:
Ru,Pt,Ni
Crystallography of Cherepanovite
Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pnma
Setting:
Pnma
Cell Parameters:
a = 5.70(2) Å, b = 3.59(1) Å, c = 6.00(1) Å
Ratio:
a:b:c = 1.588 : 1 : 1.671
Unit Cell V:
122.78 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Grains to 20 microns.
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
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) |
---|---|---|---|---|---|---|---|
0020514 | Cherepanovite | Heyding R D, Calvert L D (1961) Arsenides of the transition metals IV. A note on the platinum metal arsenides Canadian Journal of Chemistry 39 955-957 | 1961 | Synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.01 Å | (10) |
2.10 Å | (6) |
1.771 Å | (2) |
1.501 Å | (2) |
1.354 Å | (2) |
Geological Environment
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 |
36 : Carbonatites, kimberlites, and related igneous rocks | |
37 : Layered igneous intrusions and related PGE minerals |
Type Occurrence of Cherepanovite
General Appearance of Type Material:
Individual grains (up to 20 microns) or their aggregates (up to 100 microns) included in ferronickelplatinum or among aggregates of cooperite.
Place of Conservation of Type Material:
Mining Institute, St. Petersburg, Russia, 2103/1.
Geological Setting of Type Material:
Placer platinum deposit derived from ultramafic massif in ophiolite belt.
Associated Minerals at Type Locality:
Reference:
Rudashevsky, N.S., Motshalov, A.G., Trubkin, N.V., Shumskaya, N.M., Shkursky, V.I., Evstigneeva, T.L. (1985) Cherepanovite RhAs - A new mineral. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 114(4): 464-469.
Synonyms of Cherepanovite
Other Language Names for Cherepanovite
German:Cherepanovit
Spanish:Cherepanovita
Common Associates
Associated Minerals Based on Photo Data:
2 photos of Cherepanovite associated with Isoferroplatinum | Pt3Fe |
1 photo of Cherepanovite associated with Cooperite | PtS |
1 photo of Cherepanovite associated with Osmium | (Os,Ir,Ru) |
1 photo of Cherepanovite associated with Platinum | Pt |
1 photo of Cherepanovite associated with Palladoarsenide | Pd2As |
1 photo of Cherepanovite associated with Polkanovite | Rh12As7 |
1 photo of Cherepanovite associated with Ruthenium | (Ru,Ir) |
Related Minerals - Strunz-mindat Grouping
2.CC. | Tilkerodeite | Pd2HgSe3 |
2.CC. | UM2007-26-S:CuFeIrNiPtRh | (Ir,Cu,Ni,Pt,Rh,Fe)9S11 |
2.CC. | Crowningshieldite | (Ni0.9Fe0.10)S |
2.CC. | Eliopoulosite | V7S8 |
2.CC. | Kuvaevite | Ir5Ni10S16 |
2.CC. | Torryweiserite | Rh5Ni10S16 |
2.CC. | Tamuraite | Ir5Fe10S16 |
2.CC. | Ferrotorryweiserite | Rh5Fe10S16 |
2.CC.05 | Achávalite | FeSe |
2.CC.05 | Breithauptite | NiSb |
2.CC.05 | Freboldite | CoSe |
2.CC.05 | Kotulskite | Pd(Te,Bi)2-x (x ≈ 0.4) |
2.CC.05 | Langisite | CoAs |
2.CC.05 | Nickeline | NiAs |
2.CC.05 | Sederholmite | beta-NiSe |
2.CC.05 | Sobolevskite | PdBi |
2.CC.05 | Stumpflite | PtSb |
2.CC.05 | Sudburyite | PdSb |
2.CC.05 | Jaipurite | CoS |
2.CC.05 | Zlatogorite | NiCuSb2 |
2.CC.10 | Pyrrhotite | Fe1-xS |
2.CC.10 | Smythite | (Fe,Ni)3+xS4 (x=0-0.3) |
2.CC.10 | Troilite | FeS |
2.CC.15 | Modderite | (Co,Fe)As |
2.CC.15 | Ruthenarsenite | (Ru,Ni)As |
2.CC.15 | Westerveldite | (Fe,Ni,Co)As |
2.CC.15 | Minakawaite | RhSb |
2.CC.20 | Millerite | NiS |
2.CC.20 | Mäkinenite | γ-NiSe |
2.CC.20 | UM1990-38-S:CuFeIrNiPtRh | (Ni,Fe,Rh,Cu,Ir,Pt)S |
2.CC.25 | Mackinawite | FeS |
2.CC.30 | Hexatestibiopanickelite | (Pd,Ni)(Sb,Te) ? |
2.CC.30 | Vavřínite | Ni2SbTe2 |
2.CC.35a | Braggite | PdPt3S4 |
2.CC.35b | Cooperite | PtS |
2.CC.35a | Vysotskite | PdS |
2.CC.45 | Jacutingaite | Pt2HgSe3 |
2.CC.50 | Imgreite | NiTe (?) |
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 Cherepanovite
mindat.org URL:
https://www.mindat.org/min-990.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
References for Cherepanovite
Reference List:
Localities for Cherepanovite
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.
Brazil | |
| Teixeira (2014) |
Canada | |
| Mcdonald et al. (2015) |
| Smith (2021) |
India | |
| Devaraju et al. (2005) |
Japan | |
| NISHIO–HAMANE et al. (2022) |
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) |
New Zealand | |
Railton et al. (1990) | |
| Railton et al. (1990) |
Russia | |
| Airiyants et al. (2022) |
| Britvin et al. (1998) +1 other reference |
| Rudashevskiy et al. (1985) +1 other reference |
| Zhmodik et al. (2016) |
ZVMO 114 (1985) +2 other references | |
... | |
| Barkov et al. (2018) |
| Shcheka G.G. et al. (2004) |
| Jan Pašava et al. (2011) |
Kojonen et al. (2003, April) +2 other references | |
South Africa | |
| Melcher et al. (2005) |
| Melcher et al. (2007) |
| Zaccarini et al. (2002) +1 other reference |
USA | |
| ... |
Quick NavTopAbout CherepanoviteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Placer deposit, Northern Pekul'ney River, Pekul'ney Range, Chukotka Autonomous Okrug, Russia