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Borishanskiite

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Formula:
Pd
 
1+x
(As,Pb)
 
2
 , x = 0-0.2
System:OrthorhombicColour:Dark steel-grey
Hardness:4
Name:For S.S. Borishanski, Soviet geologist.
This page provides mineralogical data about Borishanskiite.

Classification of Borishanskiite

IMA status:Approved
Strunz 8th edition ID:2/D.21-05
Nickel-Strunz 10th (pending) edition ID: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
Dana 8th edition ID:2.12.16.1

2 : SULFIDES
12 : AmBnXp, with (m+n):p = 1:2
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Type Occurrence of Borishanskiite

Type Locality:Taimyr (Oktyabr'skoe; Oktyabr'skoye; Oktyabr'sky) Cu-Ni deposit, Noril'sk, Putoran Plateau, Taimyr Peninsula, Taymyrskiy Autonomous Okrug, Eastern-Siberian Region, Russia
Place of Conservation of Type Material:Fersman Museum
Year of Discovery:1975
Geological Setting of type material:Massive and disseminated Cu-Ni ores.

Physical Properties of Borishanskiite

Lustre:Metallic
Diaphaneity (Transparency):Opaque
Colour:Dark steel-grey
Hardness (Mohs):4
Hardness (Vickers):VHN20=241 kg/mm2
Tenacity:Brittle
Cleavage:Distinct/Good
Three directions observed
Density (calculated):10.2 g/cm3

Crystallography of Borishanskiite

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 Volume:V 659.76 ų (Calculated from Unit Cell)
Z:16
Morphology:Grains to 150 microns

Optical Data of Borishanskiite

Type:Anisotropic
Anisotropism:Barely noticeable to moderate in yellowish gray tones.
Colour in reflected light:Gray-white

Chemical Properties of Borishanskiite

Formula:
Pd
 
1+x
(As,Pb)
 
2
 , x = 0-0.2
Essential elements:As, Pd
All elements listed in formula:As, Pb, Pd
Common Impurities:Ag

Relationship of Borishanskiite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
2.AC.05aAtheneite
Pd
 
2
As
 
0.75
Hg
 
0.25
2.AC.05bVincentite
Pd
 
3
As
2.AC.10cArsenopalladinite
Pd
 
8
(As,Sb)
 
3
2.AC.10bMertieite-II
Pd
 
8
(Sb,As)
 
3
2.AC.10aStillwaterite
Pd
 
8
As
 
3
2.AC.15aIsomertieite
Pd
 
11
Sb
 
2
As
 
2
2.AC.15bMertieite-I
Pd
 
11
(Sb,As)
 
4
2.AC.15aMiessiite
Pd
 
11
Te
 
2
Se
 
2
2.AC.20bPalarstanide
Pd
 
8
(As,Sn)
 
3
2.AC.20aStibiopalladinite
Pd
 
5
Sb
 
2
2.AC.20cMenshikovite
Pd
 
3
Ni
 
2
As
 
3
2.AC.25eMajakite
PdNiAs
2.AC.25aPalladoarsenide
Pd
 
2
As
2.AC.25fPalladobismutharsenide
Pd
 
2
(As,Bi)
2.AC.25cPalladodymite
(Pd,Rh)
 
2
As
2.AC.25bRhodarsenide
(Rh,Pd)
 
2
As
2.AC.25dNaldrettite
Pd
 
2
Sb
2.AC.30UM1999-02-As:NiRh
(Rh,Ni)
 
7
As
 
4
2.AC.30Polkanovite
Rh
 
12
As
 
7
2.AC.35aGenkinite
(Pt,Pd,Rh)
 
4
Sb
 
3
2.AC.35bUngavaite
Pd
 
4
Sb
 
3
2.AC.40Polarite
Pd(Bi,Pb)
2.AC.45aFroodite
α-PdBi
 
2
2.AC.45bIridarsenite
(Ir,Ru)As
 
2

Other Names for Borishanskiite

Synonyms:
IMA1974-010
Other Languages:
German:Borishanskiit
Spanish:Borishanskiita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Borishanskiite

Reference List:

- +
American Mineralogist (1976): 61: 502.

Internet Links for Borishanskiite

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    • Localities for Borishanskiite

    The 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.
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    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Russia
     
    • Eastern-Siberian Region
      • Taymyrskiy Autonomous Okrug
        • Taimyr Peninsula
          • Putoran Plateau
            • Noril'sk
    		ZVMO 104 (1975), 57; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
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