Polarite Mineral Data

Polarite Mineral Data +

General Polarite Information

Chemical Formula:

Pd(Bi,Pb)

Composition:

Molecular Weight = 314.96 gm

Bismuth 49.76 % Bi

Palladium 33.79 % Pd

Lead 16.45 % Pb

______

100.00 %

Empirical Formula:

PdBi_0.75Pb_0.25

Environment:

In hydrothermal Cu-Ni-Fe veins.

IMA Status:

Approved IMA 1969

Locality:

Talnakh, Norilsk, Polar Ural Mountians, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Synonym:

ICSD 56278

PDF 23-1298

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Polarite Crystallography

Axial Ratios:

a:b:c =0.8272:1:1.2286

Cell Dimensions:

a = 7.191, b = 8.693, c = 10.681, Z = 16; V = 667.68 Den(Calc)= 12.53

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), 2.25(0.5),

Physical Properties of Polarite

Color:

White, Yellowish white.

Density:

12.51

Diaphaniety:

Opaque

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Hardness:

3.5-4 - Copper Penny-Fluorite

Luster:

Metallic

Streak:

white

Optical Properties of Polarite

RL Anisotrophism:

Slight gray to pale brown in oil.

RL Color:

White with yellowish tint.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Polarite in Air**
λ	R	∑ R(λ)
440 nm	55.40
460 nm	55.80
480 nm	55.90
500 nm	56.40
520 nm	58.20
540 nm	59.20
560 nm	59.60
580 nm	59.60
600 nm	59.90
620 nm	59.50
640 nm	60.90
660 nm	61.20
680 nm	60.90
700 nm	61.80

**Calculated Relative Intensity Colors of Polarite in Air**
Relative Intensity	0%	20%	40%	60%	80%	100%	120%	140%	160%
R

Calculated Properties of Polarite

Electron Density:

r_electron=10.2 gm/cc
note: r_Polarite=12.5 gm/cc.

Fermion Index

Fermion Index = 0.11179
Boson Index = 0.88821

Photoelectric:

PE_Polarite=1,374.79 barns/electron
U=PE_Polarite x r_electron=14083.68 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Polarite is Not Radioactive

Polarite Classification

Dana Class:

2.8.6.1 (2)Sulfides - Including Selenides and Tellurides

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

(2.8.6)Dana Group

2.8.6.1 Polarite Pd(Bi,Pb) Ccm21 mm2

Strunz Class:

II/C.20-100 II - Sulfides and sulphosalts

II/C - Sulfides with metal: sulfur, selenium and tellurium = 1:1

II/C.20 - Nickeline group and related compounds, Polarite - Cherepanovite series

II/C.20-05 Sorosite! Cu(Sn,Sb) P 6₃/mmc 6/m 2/m 2/m

II/C.20-10 Langisite (Co,Ni)As P 6₃/mmc 6/m 2/m 2/m

II/C.20-20 Nickeline NiAs P 6₃/mmc 6/m 2/m 2/m

II/C.20-30 Breithauptite NiSb P 6₃/mmc 6/m 2/m 2/m

II/C.20-40 Freboldite CoSe P 6₃/mmc 6/m 2/m 2/m

II/C.20-50 Sederholmite NiSe P 6₃/mmc 6/m 2/m 2/m

II/C.20-70 Hexatestibiopanickelite (Ni,Pd)(Te,Sb) P 6₃/mmc 6/m 2/m 2/m

II/C.20-75 Yuanjiangite AuSn P 6₃/mmc 6/m 2/m 2/m

II/C.20-80 Kotulskite Pd(Te,Bi) P 6₃/mmc 6/m 2/m 2/m

II/C.20-90 Sudburyite (Pd,Ni)Sb P 6₃/mmc 6/m 2/m 2/m

II/C.20-95 Stumpflite Pt(Sb,Bi) P 6₃/mmc 6/m 2/m 2/m

II/C.20-100 Polarite Pd(Bi,Pb) Ccm21 mm2

II/C.20-110 Sobolevskite PdBi P 6₃/mmc 6/m 2/m 2/m

II/C.20-120 Ruthenarsenite (Ru,Ni)As P nma 2/m 2/m 2/m

II/C.20-130 Cherepanovite RhAs P nma 2/m 2/m 2/m

Other Polarite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Polarite :
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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Polarite

Pd(Bi,Pb)
Dana No: 2.8.6.1 Strunz No: II/C.20-100
Locality:

Notes: