Borishanskiite Mineral Data

Borishanskiite Mineral Data +

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General Borishanskiite Information

Chemical Formula:

Pd1+x(As,Pb)2, x = 0-0.2

Composition:

Molecular Weight = 333.04 gm

Arsenic 33.74 % As

Palladium 35.15 % Pd

Lead 31.11 % Pb

______

100.00 %

Empirical Formula:

Pd_1.1As_1.5Pb_0.5

Environment:

In massive and disseminated Cu-Ni sulfide ores.

IMA Status:

Approved IMA 1975

Locality:

In the Oktyabr mine, Talnakh area, Noril'sk region, western, USSR. Link to MinDat.org Location Data.

Name Origin:

For S.S. Borishanski, Soviet mineralogist.

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Borishanskiite Crystallography

Axial Ratios:

a:b:c =0.8329:1:1.2366

Cell Dimensions:

a = 7.18, b = 8.62, c = 10.66, Z = 12; V = 659.76 Den(Calc)= 10.06

Crystal System:

Orthorhombic - PyramidalH-M Symbol (mm2) Space Group: Ccm21

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.65(1), 2.16(0.9), 2.5(0.6),

Physical Properties of Borishanskiite

Color:

Gray.

Diaphaniety:

Opaque

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Hardness:

4 - Fluorite

Luster:

Metallic

Optical Properties of Borishanskiite

RL Anisotrophism:

Barely noticeable to moderate, in yellowish gray tones.

RL Color:

Gray white.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Borishanskiite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
430 nm	53.20	51.60
460 nm	54.60	54.10
490 nm	55.20	55.80
520 nm	56.20	56.00
550 nm	57.00	56.60
580 nm	57.80	57.30
610 nm	58.70	58.30
640 nm	59.80	59.30
670 nm	60.60	60.10
700 nm	61.70	61.20

**Calculated Relative Intensity Colors of Borishanskiite in Air**
Relative Intensity	0%	20%	40%	60%	80%	100%	120%	140%	160%	170%
R₁
R₂

Calculated Properties of Borishanskiite

Electron Density:

r_electron=8.52 gm/cc
note: r_{Borishanskiite}=10.1 gm/cc.

Fermion Index

Fermion Index = 0.14723
Boson Index = 0.85277

Photoelectric:

PE_{Borishanskiite}= 676.02 barns/electron
U=PE_{Borishanskiite} x r_electron=5,762.53 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Borishanskiite is Not Radioactive

Borishanskiite Classification

Dana Class:

2.12.16.1 (2)Sulfides - Including Selenides and Tellurides

(2.12)where Am Bn Xp, with (m+n):p=1:2

(2.12.16)Dana Group

2.12.16.1 Borishanskiite Pd1x(As,Pb)2,x=0-0.2 Ccm21 mm2

Strunz Class:

II/D.21-05 II - Sulfides and sulphosalts

II/D - Sulfides with metal: sulfur, selenium and tellurium < 1:1, Tellurides with Copper, Silver, Gold

II/D.21 - Borishanskiite -Urvantsevite series

II/D.21-05 Borishanskiite Pd1x(As,Pb)2,x=0-0.2 Ccm21 mm2

II/D.21-10 Froodite PdBi2 C 2/m 2/m

II/D.21-20 Urvantsevite Pd(Bi,Pb)2 I 4/mmm 4/m 2/m 2/m

Other Borishanskiite Information

References:

NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Borishanskiite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

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Print or Cut-and-Paste your Borishanskiite Specimen Label here :

Borishanskiite

Pd1+x(As,Pb)2, x = 0-0.2
Dana No: 2.12.16.1 Strunz No: II/D.21-05
Locality:

Notes: