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Cherepanovite

A valid IMA mineral species
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About CherepanoviteHide

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.
A possible Sb analogue is coded as 'UM1979-19-Sb:Rh'.


Unique IdentifiersHide

Mindat ID:
990
Long-form identifier:
mindat:1:1:990:0
GUID
(UUID V4):
d6dc8307-2311-46ad-b778-2a2e64079dde

IMA Classification of CherepanoviteHide

Classification of CherepanoviteHide

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.
2.8.17.2

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

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
CpvIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of CherepanoviteHide

Metallic
Transparency:
Opaque
Colour:
Gray-white
Streak:
Grayish black
Hardness:
Hardness:
VHN50=726 - 754 kg/mm2 - Vickers
Cleavage:
Distinct/Good
One distinct direction
Density:
9.72 g/cm3 (Calculated)

Optical Data of CherepanoviteHide

Anisotropism:
Green to gray-brown
Reflectivity:
WavelengthR1R2
420nm39.2%40.5%
440nm39.6%41.0%
460nm40.3%41.9%
480nm41.0%42.9%
500nm41.9%43.8%
520nm42.7%44.7%
540nm43.6%45.5%
560nm44.1%46.1%
580nm44.5%46.6%
600nm44.9%47.1%
620nm45.1%47.3%
640nm45.2%47.4%
660nm45.3%47.6%
680nm45.5%47.6%
700nm45.4%47.6%

Reflectance graph
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 CherepanoviteHide

Mindat Formula:
RhAs
Common Impurities:
Ru,Pt,Ni

Crystallography of CherepanoviteHide

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 StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0020514CherepanoviteHeyding R D, Calvert L D (1961) Arsenides of the transition metals IV. A note on the platinum metal arsenides Canadian Journal of Chemistry 39 955-9571961Synthetic0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.01 Å(10)
2.10 Å(6)
1.771 Å(2)
1.501 Å(2)
1.354 Å(2)

Geological EnvironmentHide

Paragenetic Mode(s):

Type Occurrence of CherepanoviteHide

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 CherepanoviteHide

Other Language Names for CherepanoviteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
2 photos of Cherepanovite associated with IsoferroplatinumPt3Fe
1 photo of Cherepanovite associated with CooperitePtS
1 photo of Cherepanovite associated with Osmium(Os,Ir,Ru)
1 photo of Cherepanovite associated with PlatinumPt
1 photo of Cherepanovite associated with PalladoarsenidePd2As
1 photo of Cherepanovite associated with PolkanoviteRh12As7
1 photo of Cherepanovite associated with Ruthenium(Ru,Ir)

Related Minerals - Strunz-mindat GroupingHide

2.CC.TilkerodeitePd2HgSe3Trig. 3m (3 2/m) : P3m1
2.CC.UM2007-26-S:CuFeIrNiPtRh(Ir,Cu,Ni,Pt,Rh,Fe)9S11
2.CC.Crowningshieldite(Ni0.9Fe0.10)SHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
2.CC.EliopoulositeV7S8Trig. 3 2 : P32 2 1
2.CC.KuvaeviteIr5Ni10S16Trig. 3m (3 2/m) : R3m
2.CC.TorryweiseriteRh5Ni10S16Trig. 3m (3 2/m) : R3m
2.CC.TamuraiteIr5Fe10S16Trig. 3m (3 2/m) : R3m
2.CC.FerrotorryweiseriteRh5Fe10S16Trig. 3m (3 2/m) : R3m
2.CC.05AchávaliteFeSeHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
2.CC.05BreithauptiteNiSbHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
2.CC.05FrebolditeCoSeHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
2.CC.05KotulskitePd(Te,Bi)2-x (x ≈ 0.4)Hex.
2.CC.05LangisiteCoAsHex. 6 : P63
2.CC.05NickelineNiAsHex. 6/mmm (6/m 2/m 2/m) : P63/mcm
2.CC.05Sederholmitebeta-NiSeHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
2.CC.05SobolevskitePdBiHex.
2.CC.05StumpflitePtSbHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
2.CC.05SudburyitePdSbHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
2.CC.05JaipuriteCoSHex.
2.CC.05ZlatogoriteNiCuSb2Trig. 3m (3 2/m) : P3 1m
2.CC.10PyrrhotiteFe1-xSMon.
2.CC.10Smythite(Fe,Ni)3+xS4 (x=0-0.3)Trig. 3m (3 2/m) : R3m
2.CC.10TroiliteFeSHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
2.CC.15Modderite(Co,Fe)AsOrth. mmm (2/m 2/m 2/m)
2.CC.15Ruthenarsenite(Ru,Ni)AsOrth. mmm (2/m 2/m 2/m) : Pnma
2.CC.15Westerveldite(Fe,Ni,Co)AsOrth. mmm (2/m 2/m 2/m)
2.CC.15MinakawaiteRhSbOrth. mmm (2/m 2/m 2/m) : Pnma
2.CC.20MilleriteNiSTrig. 3m : R3m
2.CC.20Mäkineniteγ-NiSeTrig. 3m
2.CC.20UM1990-38-S:CuFeIrNiPtRh(Ni,Fe,Rh,Cu,Ir,Pt)S
2.CC.25MackinawiteFeSTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
2.CC.30Hexatestibiopanickelite(Pd,Ni)(Sb,Te) ?Hex.
2.CC.30VavříniteNi2SbTe2Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
2.CC.35aBraggitePdPt3S4Tet. 4/m : P42/m
2.CC.35bCooperitePtSTet. 4/mmm (4/m 2/m 2/m) : P42/mmc
2.CC.35aVysotskitePdSTet. 4/m : P42/m
2.CC.45JacutingaitePt2HgSe3Trig. 3m (3 2/m) : P3m1
2.CC.50ImgreiteNiTe (?)Hex.

Other InformationHide

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 CherepanoviteHide

References for CherepanoviteHide

Localities for CherepanoviteHide

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.
Brazil
 
  • Pará
    • Curionópolis
Teixeira (2014)
Canada
 
  • Ontario
    • Thunder Bay District
      • Coldwell complex
Mcdonald et al. (2015)
  • Québec
    • Côte-Nord
      • Sept-Rivières RCM
Smith (2021)
India
 
  • Karnataka
    • Davanagere District
      • Shimoga schist belt
Devaraju et al. (2005)
Japan
 
  • Hokkaidō Prefecture
    • Rumoi Subprefecture
      • Tomamae District
        • Haboro
NISHIO–HAMANE et al. (2022)
NISHIO–HAMANE et al. (2022)
        • Shosanbetsu
NISHIO–HAMANE et al. (2022)
        • Tomamae
NISHIO–HAMANE et al. (2022)
    • Sorachi Subprefecture
      • Numata
NISHIO–HAMANE et al. (2022)
  • Kumamoto Prefecture
    • Shimomashiki District
      • Misato
NISHIO–HAMANE et al. (2019)
New Zealand
 
Railton et al. (1990)
  • Tasman Region
    • St. Arnaud
Railton et al. (1990)
Russia
 
  • Buryatia
    • Okinsky District
      • Ulan-Sar’dag Ophiolite
Airiyants et al. (2022)
  • Chelyabinsk Oblast
Britvin et al. (1998) +1 other reference
  • Chukotka Autonomous Okrug
    • Pekul'ney Range (Pekul'nei Range)
      • Northern Pekul'ney River (Northern Pekul'nei River; Northern Pekul'neyveem River)
Rudashevskiy et al. (1985) +1 other reference
  • Kemerovo Oblast
Zhmodik et al. (2016)
ZVMO 114 (1985) +2 other references
...
    • Lysanskiy dunite-peridotite-gabbro complex
Barkov et al. (2018)
  • Primorsky Krai
    • Khanka lake
Shcheka G.G. et al. (2004)
  • Yamalo-Nenets Autonomous Okrug
Jan Pašava et al. (2011)
Kojonen et al. (2003, April) +2 other references
South Africa
 
  • Limpopo
    • Sekhukhune District Municipality
      • Fetakgomo Tubatse Local Municipality
        • Burgersfort
Melcher et al. (2005)
          • Sekhukhuneland
Melcher et al. (2007)
        • Steelpoort
Zaccarini et al. (2002) +1 other reference
USA
 
  • Alaska
    • Bethel Census Area
...
 
Mineral and/or Locality  
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