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Joseite Mineral Data
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General Joseite Information
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 Chemical Formula: |
Bi4(S,Te)3 |
| Composition: |
Molecular Weight = 1,003.77 gm |
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Bismuth 83.28 % Bi |
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Tellurium 9.53 % Te |
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Sulfur 7.19 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Bi4S2.25Te0.75 |
| Environment: |
In granular limestone. |
| IMA Status: |
Valid Species (Pre-IMA) 1853 |
| Locality: |
From San Jose, near Marianna, Minas Gerais, Brazil. Link to MinDat.org Location Data. |
| Name Origin: |
For the locality at San Jose in Brazil. |
| Name Pronunciation: |
Joseite  |
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Joseite Image |
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Images:
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Joseite
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 |
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Joseite Crystallography
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| Axial Ratios: |
a:c = 1:9.35764 |
| Cell Dimensions: |
a = 4.25, c = 39.77, Z = 3; V = 622.11 Den(Calc)= 8.04 |
| Crystal System: |
Trigonal - Hexagonal Scalenohedral H-M Symbol (3 2/m) Space Group: R 3m |
| X Ray Diffraction: |
By Intensity(I/Io): 3.08(1), 2.11(0.5), 2.24(0.5), |
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Physical Properties of Joseite
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| Color: |
Gray, Grayish black. |
| Density: |
8.1 |
| Diaphaneity: |
Opaque |
| Hardness: |
2 - Gypsum |
| Luster: |
Metallic |
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Optical Properties of Joseite
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| RL Anisotrophism: |
Nearly isotropic in basal sections, else moderately anisotropic greenish gray to dark greenish gray. |
| RL Color: |
White. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Joseite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
57.20 |
58.60 |
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| 420 nm |
56.60 |
58.40 |
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| 440 nm |
56.00 |
58.20 |
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| 460 nm |
55.70 |
58.30 |
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| 480 nm |
55.60 |
58.50 |
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| 500 nm |
55.70 |
59.00 |
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| 520 nm |
56.00 |
59.40 |
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| 540 nm |
56.20 |
60.00 |
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| 560 nm |
56.30 |
60.60 |
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| 580 nm |
56.30 |
61.10 |
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| 600 nm |
56.30 |
61.40 |
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| 620 nm |
56.30 |
61.50 |
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| 640 nm |
56.20 |
61.60 |
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| 660 nm |
56.20 |
61.50 |
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| 680 nm |
56.00 |
61.40 |
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| 700 nm |
55.90 |
61.10 |
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Calculated Relative Intensity Colors of Joseite in Air
Relative
Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
140% |
160% |
| R1 |
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| R2 |
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Calculated Properties of Joseite
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| Electron Density: |
Bulk Density (Electron Density)=6.52 gm/cc
note: Specific Gravity of Joseite =8.04 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0081576246
Boson Index = 0.9918423754 |
| Photoelectric: |
PEJoseite =1,689.13 barns/electron
U=PEJoseite x rElectron Density=11013.07 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Joseite is Not Radioactive |
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Joseite Classification
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| Dana Class: |
02.06.02.01 (02)Sulfides - Including Selenides and Tellurides |
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(02.06)where Am Bn Xp, with (m+n):p=4:3 |
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(02.06.02)Joseite Group (Trigonal: R-3m) |
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02.06.02.01 Joseite Bi4(S,Te)3 R 3m 3 2/m |
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02.06.02.02 Joseite-B Bi4(S,Te)3 R 3m 3 2/m |
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02.06.02.03 Ikunolite Bi4(S,Se)3 R 3m 3 2/m |
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02.06.02.04 Laitakarite Bi4(Se,S)3 R 3m 3 2/m |
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02.06.02.05 Pilsenite Bi4Te3 R 3m 3 2/m |
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02.06.02.06 Poubaite PbBi2Se2(Te,S)2 R 3m 3 2/m |
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02.06.02.07 Rucklidgeite (Bi,Pb)3Te4 R 3m 3 2/m |
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02.06.02.08 Babkinite! Pb2Bi2(S,Se)3 P 3,P 3m Trig |
| Strunz Class: |
02.DC.05d 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.D - Metal Sulfides, M:S = 3:4 and 2:3 |
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02.DC -Variable M:S |
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02.DC.05d Laitakarite Bi4(Se,S)3 R 3m 3 2/m |
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02.DC.05d Ikunolite Bi4(S,Se)3 R 3m 3 2/m |
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02.DC.05d Joseite Bi4(S,Te)3 R 3m 3 2/m |
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02.DC.05d Joseite-B Bi4(S,Te)3 R 3m 3 2/m |
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02.DC.05d Pilsenite Bi4Te3 R 3m 3 2/m |
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Other Joseite Information
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
| 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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Print or Cut-and-Paste your Joseite Specimen Label here :
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Joseite
Bi4(S,Te)3
Dana No: 02.06.02.01 Strunz No: 02.DC.05d
Locality:
Notes:
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