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Borishanskiite

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Formula:
Pd1+x(As,Pb)2 , x = 0-0.2
Colour:
Dark steel-grey
Lustre:
Metallic
Hardness:
4
Specific Gravity:
10.2 (Calculated)
Crystal System:
Orthorhombic
Name:
Named in honor of Serafima Samoilovna Borishanski (Серафимы Самойловны Боришанской) (1907-1988), Soviet mineralogist and one of the first researchers of platinum minerals in the Norilsk region.
This page provides mineralogical data about Borishanskiite.


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Classification of BorishanskiiteHide

Approved
First published:
1975
2.AC.45c

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
A : Alloys
C : Alloys of metalloids with PGE
2.12.16.1

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

Pronounciation of BorishanskiiteHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of BorishanskiiteHide

Metallic
Transparency:
Opaque
Colour:
Dark steel-grey
Hardness:
Hardness:
VHN20=228 - 250 kg/mm2 - Vickers
Comment:
VHN is for isotropic indentations; VHN20 = 182-292 for anisotropic indentations
Tenacity:
Brittle
Cleavage:
Distinct/Good
Three directions observed
Density:
10.2 g/cm3 (Calculated)

Optical Data of BorishanskiiteHide

Anisotropism:
Barely noticeable to moderate in yellowish gray tones.
Reflectivity:
430nmR1=53.2%R2=51.6%
460nmR1=54.6%R2=54.1%
490nmR1=56.2%R2=55.8%
520nmR1=56.4%R2=56.0%
550nmR1=57.0%R2=56.6%
580nmR1=57.8%R2=57.3%
610nmR1=58.7%R2=58.3%
640nmR1=59.8%R2=59.3%
670nmR1=60.6%R2=60.1%
700nmR1=61.7%R2=61.2%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 61.7%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Gray-white

Chemical Properties of BorishanskiiteHide

Formula:
Pd1+x(As,Pb)2 , x = 0-0.2
IMA Formula:
Pd1+x(As,Pb)2 (x = 0.0-0.2)
Common Impurities:
Ag

Crystallography of BorishanskiiteHide

Crystal System:
Orthorhombic
Class (H-M):
mm2 - Pyramidal
Cell Parameters:
a = 7.18(2) Å, b = 8.62(2) Å, c = 10.66(2) Å
Ratio:
a:b:c = 0.833 : 1 : 1.237
Unit Cell V:
659.76 ų (Calculated from Unit Cell)
Z:
16
Morphology:
Grains to 150 microns

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
2.65 Å(100)
2.50 Å(60)
2.25 Å(60)
2.16 Å(90)
1.677 Å(60)
1.385 Å(60)
1.169 Å(60)

Type Occurrence of BorishanskiiteHide

General Appearance of Type Material:
20-30 micron grains in multimineralic assemblages
Place of Conservation of Type Material:
Fersman Mineralogical Museum, Moscow, Russia.
Geological Setting of Type Material:
Massive and disseminated Cu-Ni ores.
Reference:
Razin, L.V., Dubakina, L.S., Meshchankina, V.I., Begizov, V.D. (1975) Borishanskiite - a new plumboarsenide of palladium for the copper-nickel sulfides ores of the Talnakh differentiated intrusive. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 104(1): 57-61.

Synonyms of BorishanskiiteHide

Other Language Names for BorishanskiiteHide

Related Minerals - Nickel-Strunz GroupingHide

2.AC.TörnroositePd11As2Te2Iso. m3m (4/m 3 2/m) : Fd3m
2.AC.05aAtheneitePd2As0.75Hg0.25Hex. 6 m2 : P62m
2.AC.05bVincentitePd3AsTet.
2.AC.10cArsenopalladinitePd8(As,Sb)3Tric. 1 : P1
2.AC.10bMertieite-IIPd8Sb2.5As0.5Trig. 3m (3 2/m) : R3c
2.AC.10aStillwateritePd8As3Trig.
2.AC.15aIsomertieitePd11Sb2As2Iso. m3m (4/m 3 2/m) : Fd3m
2.AC.15bMertieite-IPd11(Sb,As)4Hex.
2.AC.15aMiessiitePd11Te2Se2Iso. m3m (4/m 3 2/m) : Fd3m
2.AC.20bPalarstanidePd5(Sn,As)2Hex.
2.AC.20aStibiopalladinitePd5Sb2Hex.
2.AC.20cMenshikovitePd3Ni2As3Hex. 6/m : P63/m
2.AC.25eMajakitePdNiAsHex.
2.AC.25aPalladoarsenidePd2AsMon. 2/m : P2/m
2.AC.25fPalladobismutharsenidePd2(As,Bi)Orth.
2.AC.25cPalladodymite(Pd,Rh)2AsOrth.
2.AC.25bRhodarsenide(Rh,Pd)2AsOrth.
2.AC.25dNaldrettitePd2SbOrth. mm2 : Cmc21
2.AC.30UM1999-02-As:NiRh(Rh,Ni)7As4
2.AC.30PolkanoviteRh12As7Hex.
2.AC.35aGenkinite(Pt,Pd,Rh)4Sb3Tet. 4 2 2
2.AC.35bUngavaitePd4Sb3Tet. 4 2 2 : P41 21 2
2.AC.40PolaritePd(Bi,Pb)Orth. mm2 : Cmc21
2.AC.45aFrooditeα-PdBi2Mon. 2/m : B2/m
2.AC.45bIridarsenite(Ir,Ru)As2Mon.

Other InformationHide

Magnetism:
Non-Magnetic
Notes:
Etched by 20% FeCl3 and concentrated HNO3, and slightly etched by HgCl2. It is negative to other standard etch reagents.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for BorishanskiiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Razin, L.V., Dubakina, L.S., Meshchankina, V.I., Begizov, V.D. (1975) Borishanskiite - a new plumboarsenide of palladium for the copper-nickel sulfides ores of the Talnakh differentiated intrusive. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 104(1): 57-61.
Fleischer, M., Cabri, L.J. (1976) New mineral names. American Mineralogist: 61: 502-504.

Internet Links for BorishanskiiteHide

Localities for BorishanskiiteHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Russia (TL)
 
  • Krasnoyarsk Krai
    • Taymyrskiy Autonomous Okrug
      • Taimyr Peninsula
        • Putoran Plateau
          • Noril'sk
            • Talnakh Cu-Ni Deposit
Razin, L.V., Dubakina, L.S., Meshchankina, V.I., Begizov, V.D. (1975) Borishanskiite - a new plumboarsenide of palladium for the copper-nickel sulfides ores of the Talnakh differentiated intrusive. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 104(1): 57-61.; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow.
 
Mineral and/or Locality  
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