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Joseite Mineral Data

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General Joseite Information

Help on Chemical  Formula: Chemical Formula: Bi4(S,Te)3
Help on Composition: Composition: Molecular Weight = 1,003.77 gm
   Bismuth    83.28 %  Bi
   Tellurium   9.53 %  Te
   Sulfur      7.19 %  S
             100.00 % 
Help on Empirical Formula: Empirical Formula: Bi4S2.25Te0.75
Help on Environment: Environment: In granular limestone.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1853
Help on Locality: Locality: From San Jose, near Marianna, Minas Gerais, Brazil. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For the locality at San Jose in Brazil.
Help on Name Pronunciation: Name Pronunciation: Joseite Say JOSEITE

Joseite Image

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Comments: Milky quartz matrix with a 15 mm long group of metallic joseite crystals.
Location: Caldbeck Fells, Cumbria, England, UK. Scale: 5x3.5x2.5 cm.
© John Betts - Fine Minerals

Joseite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:9.35764
Help on Cell Dimensions: Cell Dimensions: a = 4.25, c = 39.77, Z = 3; V = 622.11 Den(Calc)= 8.04
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): 3.08(1), 2.11(0.5), 2.24(0.5),

Physical Properties of Joseite

Help on Color: Color: Gray, Grayish black.
Help on Density: Density: 8.1
Help on Diaphaneity: Diaphaneity: Opaque
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Metallic

Optical Properties of Joseite

Help on RL Anisotrophism: RL Anisotrophism: Nearly isotropic in basal sections, else moderately anisotropic greenish gray to dark greenish gray.
Help on RL Color: RL Color: White.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Joseite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   57.20   58.60 
 420 nm   56.60   58.40 
 440 nm   56.00   58.20 
 460 nm   55.70   58.30 
 480 nm   55.60   58.50 
 500 nm   55.70   59.00 
 520 nm   56.00   59.40 
 540 nm   56.20   60.00 
 560 nm   56.30   60.60 
 580 nm   56.30   61.10 
 600 nm   56.30   61.40 
 620 nm   56.30   61.50 
 640 nm   56.20   61.60 
 660 nm   56.20   61.50 
 680 nm   56.00   61.40 
 700 nm   55.90   61.10 
Calculated Relative Intensity Colors of Joseite in Air
   0%   20%   40%   60%   80% 100% 120% 140% 160%

Calculated Properties of Joseite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=6.52 gm/cc
note: Specific Gravity of Joseite =8.04 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0081576246
Boson Index = 0.9918423754
Help on Photoelectric: Photoelectric: PEJoseite =1,689.13 barns/electron
U=PEJoseite x rElectron Density=11013.07 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Joseite is Not Radioactive

Joseite Classification

Help on  Dana Class: Dana Class: (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) Joseite Bi4(S,Te)3 R 3m 3 2/m Joseite-B Bi4(S,Te)3 R 3m 3 2/m Ikunolite Bi4(S,Se)3 R 3m 3 2/m Laitakarite Bi4(Se,S)3 R 3m 3 2/m Pilsenite Bi4Te3 R 3m 3 2/m Poubaite PbBi2Se2(Te,S)2 R 3m 3 2/m Rucklidgeite (Bi,Pb)3Te4 R 3m 3 2/m Babkinite! Pb2Bi2(S,Se)3 P 3,P 3m Trig
Help on  Strunz Class: Strunz Class: 02.DC.05d 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.05d Laitakarite Bi4(Se,S)3 R 3m 3 2/m
02.DC.05d Ikunolite Bi4(S,Se)3 R 3m 3 2/m
02.DC.05d Joseite Bi4(S,Te)3 R 3m 3 2/m
02.DC.05d Joseite-B Bi4(S,Te)3 R 3m 3 2/m
02.DC.05d Pilsenite Bi4Te3 R 3m 3 2/m

Other Joseite 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 Joseite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (UofA)
7 - MinDAT
8 - Mineralienatlas (Deutsch)
9 - Online Mineral Museum
10 - QUT Mineral Atlas
11 - Ruff.Info

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Dana No: Strunz No: 02.DC.05d





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