Mineralogy Database

Hedleyite Mineral Data

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General Hedleyite Information

Help on Chemical Formula: Chemical Formula: Bi7Te3 (?)
Help on Composition: Composition: Molecular Weight = 1,845.66 gm
   Bismuth    79.26 %  Bi
   Tellurium  20.74 %  Te
             ______ 
             100.00 % 
Help on Empirical Formula: Empirical Formula: Bi7Te3
Help on Environment: Environment: In irregular quartz veins and stringer cutting garnet-epidote-pyroxene skarn.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1945
Help on Locality: Locality: In Canada, from the Good Hope mineral claim, about 6 km southeast of Hedley, Osoyoos mining division; also the Oregon mine, near Hedley, British Columbia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For the locality.
Help on Name Pronunciation: Name Pronunciation: Hedleyite + Pronunciation Say HEDLEYITE
 

Hedleyite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:26.62192
Help on Cell Dimensions: Cell Dimensions: a = 4.47, c = 119, Z = 6; V = 2,059.17 Den(Calc)= 8.93
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): 3.25(1), 2.37(0.5), 2.24(0.4),
 

Physical Properties of Hedleyite

Help on Cleavage: Cleavage: {0001} Perfect
Help on Color: Color: Iron black, Black, Tin white.
Help on Density: Density: 8.91
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Flexible - Flexible fragments.
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Metallic
 

Optical Properties of Hedleyite

Help on RL Anisotrophism: RL Anisotrophism: Slight, light gray to dark gray.
Help on RL Color: RL Color: White, between galena and silver.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Hedleyite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   68.50   69.60 
   
 420 nm   67.50   68.50 
 440 nm   66.50   67.40 
 460 nm   65.90   66.80 
 480 nm   65.70   66.60 
 500 nm   65.80   66.50 
 520 nm   66.00   66.60 
 540 nm   66.20   66.70 
 560 nm   66.40   67.00 
 580 nm   66.60   67.20 
 600 nm   66.90   67.60 
 620 nm   67.20   67.90 
 640 nm   67.30   68.20 
 660 nm   68.00   68.60 
 680 nm   68.40   69.00 
 700 nm   68.80   69.50 
Calculated Relative Intensity Colors of Hedleyite in Air
Relative
Intensity		    0%   20%   40%   60%   80% 100% 120% 140%
R1                
R2                
 

Calculated Properties of Hedleyite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=7.13 gm/cc
note: Specific Gravity of Hedleyite =8.93 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEHedleyite =1,676.75 barns/electron
U=PEHedleyite x rElectron Density=11958.14 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Hedleyite is Not Radioactive
 

Hedleyite Classification
Help on Dana Class: Dana Class: 02.06.03.03 (02)Sulfides - Including Selenides and Tellurides
  (02.06)where Am Bn Xp, with (m+n):p=4:3
  (02.06.03)Kochkarite Group
 
02.06.03.01 Kochkarite PbBi4Te7 P 3m1 3 2/m
 
02.06.03.02 Aleksite PbBi2Te2S2(?) P 3m1 3 2/m
 
02.06.03.03 Hedleyite Bi7Te3(?) R 3m 3 2/m
Help on Strunz Class: Strunz Class: 02.DC.05a 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.05a Hedleyite Bi7Te3(?) R 3m 3 2/m
 

Other Hedleyite 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 Hedleyite :
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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Hedleyite

Bi7Te3 (?)
Dana No: 02.06.03.03 Strunz No: 02.DC.05a
Locality:

 

Notes:

 
 
   
 

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