General Polarite Information
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Chemical Formula: |
Pd(Bi,Pb) |
Composition: |
Molecular Weight = 314.96 gm |
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Bismuth 49.76 % Bi |
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Palladium 33.79 % Pd |
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Lead 16.45 % Pb |
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______ |
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100.00 % |
Empirical Formula: |
PdBi0.75Pb0.25 |
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 |
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PDF 23-1298 |
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Search for Polarite Images |
Images:
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Polarite Crystallography
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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 |
X Ray Diffraction: |
By Intensity(I/Io): 2.65(1), 2.16(0.9), 2.25(0.5), |
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Physical Properties of Polarite
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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 |
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Optical Properties of Polarite
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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 |
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∑ R(λ) |
| 440 nm |
55.40 |
 |
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| 460 nm |
55.80 |
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| 480 nm |
55.90 |
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| 500 nm |
56.40 |
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| 520 nm |
58.20 |
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| 540 nm |
59.20 |
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| 560 nm |
59.60 |
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| 580 nm |
59.60 |
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| 600 nm |
59.90 |
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| 620 nm |
59.50 |
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| 640 nm |
60.90 |
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| 660 nm |
61.20 |
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| 680 nm |
60.90 |
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| 700 nm |
61.80 |
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Calculated Relative Intensity Colors of Polarite in Air
Relative Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
140% |
160% |
| R |
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Calculated Properties of Polarite
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Electron Density: |
relectron=10.2 gm/cc note: rPolarite =12.5 gm/cc. |
Fermion Index |
Fermion Index = 0.11179 Boson Index = 0.88821 |
Photoelectric: |
PEPolarite =1,374.79 barns/electron U=PEPolarite x relectron=14083.68 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Polarite is Not Radioactive |
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Polarite Classification
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Dana Class: |
2.8.6.1 (2)Sulfides - Including Selenides and Tellurides |
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(2.8)where Am Bn Xp, with (m+n):p=1:1 |
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(2.8.6)Dana Group |
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2.8.6.1 Polarite Pd(Bi,Pb) Ccm21 mm2 |
Strunz Class: |
II/C.20-100 II - Sulfides and sulphosalts |
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II/C - Sulfides with metal: sulfur, selenium and tellurium = 1:1 |
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II/C.20 - Nickeline group and related compounds, Polarite - Cherepanovite series |
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II/C.20-05 Sorosite! Cu(Sn,Sb) P 63/mmc 6/m 2/m 2/m |
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II/C.20-10 Langisite (Co,Ni)As P 63/mmc 6/m 2/m 2/m |
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II/C.20-20 Nickeline NiAs P 63/mmc 6/m 2/m 2/m |
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II/C.20-30 Breithauptite NiSb P 63/mmc 6/m 2/m 2/m |
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II/C.20-40 Freboldite CoSe P 63/mmc 6/m 2/m 2/m |
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II/C.20-50 Sederholmite NiSe P 63/mmc 6/m 2/m 2/m |
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II/C.20-70 Hexatestibiopanickelite (Ni,Pd)(Te,Sb) P 63/mmc 6/m 2/m 2/m |
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II/C.20-75 Yuanjiangite AuSn P 63/mmc 6/m 2/m 2/m |
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II/C.20-80 Kotulskite Pd(Te,Bi) P 63/mmc 6/m 2/m 2/m |
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II/C.20-90 Sudburyite (Pd,Ni)Sb P 63/mmc 6/m 2/m 2/m |
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II/C.20-95 Stumpflite Pt(Sb,Bi) P 63/mmc 6/m 2/m 2/m |
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II/C.20-100 Polarite Pd(Bi,Pb) Ccm21 mm2 |
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II/C.20-110 Sobolevskite PdBi P 63/mmc 6/m 2/m 2/m |
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II/C.20-120 Ruthenarsenite (Ru,Ni)As P nma 2/m 2/m 2/m |
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II/C.20-130 Cherepanovite RhAs P nma 2/m 2/m 2/m |
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Other Polarite Information
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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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Print or Cut-and-Paste your Polarite Specimen Label here :
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Polarite
Pd(Bi,Pb)
Dana No: 2.8.6.1 Strunz No: II/C.20-100
Locality:
Notes:
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