Mineralogy Database

Tellurobismuthite Mineral Data

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General Tellurobismuthite Information

Help on Chemical  Formula: Chemical Formula: Bi2Te3
Help on Composition: Composition: Molecular Weight = 800.76 gm
   Bismuth    52.20 %  Bi
   Tellurium  47.80 %  Te
             ______ 
             100.00 % 
Help on Empirical Formula: Empirical Formula: Bi2Te3
Help on Environment: Environment: Gold and tellurium-bearing deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1863
Help on Locality: Locality: Little Madrid Mine, Sylvanite district, Hidalgo County, New Mexico. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its composition of tellurium and bismuth.
Help on Name Pronunciation: Name Pronunciation: Tellurobismuthite + Pronunciation Say TELLUROBISMUTHITE
Help on Synonym: Synonym: ICSD 74348
  PDF 15-863
 

Tellurobismuthite Image

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  Tellurobismuthite

Comments: Platy hexagonal metallic crystals of tellurobismuthite to 3+ mm. in matrix.
Location: Boliden, Skellefteå, Västerbotten, Sweden. Scale: 2.7x1.6x0.7 cm.
© Richard Dale / Dale Minerals

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  Tellurobismuthite

Comments: Metallic tellurobismuthite crystal fragment.
Location: Boliden, Vasterbotten, Sweden. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tellurobismuthite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:6.94628
Help on Cell Dimensions: Cell Dimensions: a = 4.375, c = 30.39, Z = 3; V = 503.75 Den(Calc)= 7.92
Help on Crystal System: Crystal System: Trigonal - Hexagonal Scalenohedral H-M Symbol (3 2/m) Space Group: R 3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.222(1), 2.192(0.25), 2.376(0.25),
 

Physical Properties of Tellurobismuthite

Help on Cleavage: Cleavage: {0001} Perfect
Help on Color: Color: Pale gray.
Help on Density: Density: 7.815
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Flexible - Flexible fragments.
Help on Habit: Habit: Massive - Fibrous - Distinctly fibrous fine-grained forms.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Hardness: Hardness: 1.5-2 - Talc-Gypsum
Help on Luster: Luster: Metallic
Help on Streak: Streak: lead gray
 

Optical Properties of Tellurobismuthite

Help on RL Anisotrophism: RL Anisotrophism: Weak.
Help on RL Color: RL Color: White.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Tellurobismuthite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   58.60   61.30 
   
 420 nm   59.00   61.40 
 440 nm   59.40   61.50 
 460 nm   59.60   61.50 
 480 nm   59.60   61.40 
 500 nm   59.50   61.50 
 520 nm   59.50   61.70 
 540 nm   59.60   62.00 
 560 nm   60.00   62.60 
 580 nm   60.30   63.20 
 600 nm   60.80   63.80 
 620 nm   61.40   64.30 
 640 nm   62.00   64.80 
 660 nm   62.50   65.20 
 680 nm   63.00   65.50 
 700 nm   63.40   65.80 
Calculated Relative Intensity Colors of Tellurobismuthite in Air
Relative
Intensity
   0%   20%   40%   60%   80% 100% 120% 140% 150%
R1                  
R2                  
 

Calculated Properties of Tellurobismuthite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=6.37 gm/cc
note: Specific Gravity of Tellurobismuthite =7.92 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PETellurobismuthite =1,226.73 barns/electron
U=PETellurobismuthite x rElectron Density=7,813.71 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Tellurobismuthite is Not Radioactive
 

Tellurobismuthite Classification

Help on  Dana Class: Dana Class: 02.11.07.02 (02)Sulfides - Including Selenides and Tellurides
  (02.11)where Am Bn Xp, with (m+n):p=2:3
  (02.11.07)Tetradymite Group (Trigonal: R-3m)
 
02.11.07.01 Tetradymite Bi2Te2S R 3m 3 2/m
 
02.11.07.02 Tellurobismuthite Bi2Te3 R 3m 3 2/m
 
02.11.07.03 Tellurantimony Sb2Te3 R 3m 3 2/m
 
02.11.07.04 Paraguanajuatite Bi2(Se,S)3 R 3m 3 2/m
 
02.11.07.05 Kawazulite Bi2(Te,Se,S)3 R 3m 3 2/m
 
02.11.07.06 Skippenite Bi2Se2(Te,S) R 3m 3 2/m
 
02.11.07.07 Vihorlatite! Bi24Se17Te4 P 3m1 3 2/m
Help on  Strunz Class: Strunz Class: 02.DC.05c 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.D - Metal Sulfides, M:S = 3:4 and 2:3
  02.DC -Variable M:S
 
02.DC.05c Kawazulite Bi2(Te,Se,S)3 R 3m 3 2/m
 
02.DC.05c Paraguanajuatite Bi2(Se,S)3 R 3m 3 2/m
 
02.DC.05c Skippenite Bi2Se2(Te,S) R 3m 3 2/m
 
02.DC.05c Tetradymite Bi2Te2S R 3m 3 2/m
 
02.DC.05c Tellurantimony Sb2Te3 R 3m 3 2/m
 
02.DC.05c Tellurobismuthite Bi2Te3 R 3m 3 2/m
 

Other Tellurobismuthite Information

Help on References: References: NAME( MinRec) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Tellurobismuthite :
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
15 - WWW-MINCRYST

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Tellurobismuthite

Bi2Te3
Dana No: 02.11.07.02 Strunz No: 02.DC.05c
Locality:

 

Notes:

 

 
   
 


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