Poubaite Mineral Data (original) (raw)

General Poubaite Information

Help on Chemical Formula: Chemical Formula:

PbBi2Se2(Te,S)2

Help on Composition: Composition:

Molecular Weight = 990.51 gm

Bismuth 42.20 % Bi

Tellurium 19.32 % Te

Lead 20.92 % Pb

Selenium 15.94 % Se

Sulfur 1.62 % S

______

100.00 %

Help on Empirical Formula: Empirical Formula:

PbBi2Se2Te1.5S0.5

Help on Environment: Environment:

In hydrothermal dolomite-calcite veins in the western contact of the Bor granite massif.

Help on IMA Status: IMA Status:

Approved IMA 1978

Help on Locality: Locality:

Oldr�chov, Tachov, Cechy (Bohemia), Czech Republic. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for Z. Pouba, economic geologist, Charles University, Prague, Czechoslovakia.

Help on Name Pronunciation: Name Pronunciation:

Poubaite Say POUBAITE

Help on Synonym: Synonym:

ICSD 20386

PDF 29-245

Poubaite Image

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Poubaite Crystallography

Help on Axial Ratios: Axial Ratios:

a:c = 1:9.42968

Help on Cell Dimensions: Cell Dimensions:

a = 4.252, c = 40.095, Z = 3; V = 627.78 Den(Calc)= 7.86

Help on Crystal System: Crystal System:

Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: R 3m

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 2.251(1), 3.093(0.4), 2.127(0.2),

Physical Properties of Poubaite

Help on Cleavage: Cleavage:

{0001} Perfect

Help on Color: Color:

Silver white.

Help on Diaphaneity: Diaphaneity:

Opaque

Help on Habit: Habit:

Euhedral Crystals - Occurs as well-formed crystals showing good external form.

Help on Habit: Habit:

Lath - Shaped like a small, thin plaster lath, tabular (rectangular) in shape.

Help on Hardness: Hardness:

2.5-3 - Finger Nail-Calcite

Help on Luster: Luster:

Metallic

Optical Properties of Poubaite

Help on Optical Data: Optical Data:

NCalc= 2.18 - from Gladstone-Dale relationship (KC = 0.1505) where Ncalc=Dcalc*KC+1

Help on RL Anisotrophism: RL Anisotrophism:

Strong in light grayish.

Help on RL Color: RL Color:

Creamy white.

Help on RL Pleochroism: RL Pleochroism:

Maximum parallel to elongation, creamy.

Help on Reflectivity Reflectivity

Standardized Intensity (100%) Reflection Spectra of Poubaite in Air

λ R1 R 2 ∑ R1(λ) ∑ R2(λ)
420 nm 46.00 50.30
440 nm 46.50 51.40
460 nm 47.20 52.20
480 nm 47.60 52.70
500 nm 48.00 53.00
520 nm 48.30 53.20
540 nm 48.50 53.30
560 nm 48.60 53.30
580 nm 48.80 53.30
600 nm 48.80 53.30
620 nm 48.90 53.20
640 nm 49.00 53.20
660 nm 49.00 53.10
680 nm 49.10 53.10
700 nm 49.10 53.00

Calculated Relative Intensity Colors of Poubaite in Air

RelativeIntensity 0% 20% 40% 60% 80% 100% 120% 140% 160% 180% 190%
R1
R2

Calculated Properties of Poubaite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=6.38 gm/cc
note: Specific Gravity of Poubaite =7.86 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.07
Boson Index = 0.93

Help on Photoelectric: Photoelectric:

PEPoubaite =1,319.09 barns/electron
U=PEPoubaite x rElectron Density=8,415.72 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Poubaite is Not Radioactive

Poubaite Classification

Help on Dana Class: Dana Class:

02.06.02.06 (02)Sulfides - Including Selenides and Tellurides

(02.06)where Am Bn Xp, with (m+n):p=4:3

(02.06.02)Joseite Group (Trigonal: R-3m)

02.06.02.01 Joseite Bi4(S,Te)3 R 3m 3 2/m

02.06.02.02 Joseite-B Bi4(S,Te)3 R 3m 3 2/m

02.06.02.03 Ikunolite Bi4(S,Se)3 R 3m 3 2/m

02.06.02.04 Laitakarite Bi4(Se,S)3 R 3m 3 2/m

02.06.02.05 Pilsenite Bi4Te3 R 3m 3 2/m

02.06.02.06 Poubaite PbBi2Se2(Te,S)2 R 3m 3 2/m

02.06.02.07 Rucklidgeite (Bi,Pb)3Te4 R 3m 3 2/m

02.06.02.08 Babkinite! Pb2Bi2(S,Se)3 P 3,P 3m Trig

Help on Strunz Class: Strunz Class:

02.GC.40c 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.G - Sulfarsenites, sulfantimonites, sulfbismuthites

02.GC -Poly-sulfarsenites

02.GC.40c Rucklidgeite (Bi,Pb)3Te4 R 3m 3 2/m

02.GC.40c Poubaite PbBi2Se2(Te,S)2 R 3m 3 2/m

Other Poubaite Information

Help on References: References:

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

Help on See Also: See Also:

Links to other databases for Poubaite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Ask about Poubaite here :
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Print or Cut-and-Paste your Poubaite Specimen Label here :

Poubaite

PbBi2Se2(Te,S)2
Dana No: 02.06.02.06 Strunz No: 02.GC.40c
Locality:

Notes: