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Vihorlatite Mineral Data
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General Vihorlatite Information
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 Chemical Formula: |
Bi24Se17Te4 |
| Composition: |
Molecular Weight = 6,525.04 gm |
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Bismuth 70.14 % Bi |
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Tellurium 8.02 % Te |
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Selenium 21.06 % Se |
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Sulfur 0.79 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Bi21.9Se17.4Te4.1S1.6 |
| Environment: |
Occurs in quartz-opal veinlets or secondary quartzites as anhedral grains. Tetradymite group. |
| IMA Status: |
Approved IMA 1988 (Dana # Added) |
| Locality: |
Poruba, Vihorlat Mountains, Slovakia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality. |
| Synonym: |
IMA1988-047 |
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Vihorlatite Image |
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Images:
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Vihorlatite Crystallography
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| Axial Ratios: |
a:c = 1:20.33086 |
| Cell Dimensions: |
a = 4.2797, c = 87.01, Z = 1; V = 1,380.15 Den(Calc)= 7.85 |
| Crystal System: |
Trigonal - Hexagonal Scalenohedral H-M Symbol (3 2/m) Space Group: P 3m1 |
| X Ray Diffraction: |
By Intensity(I/Io): 3.116(1)(1.0.15), 2.282(0.755)(0.1.30), 4.55(0.554)(0.0.19),1.934(0.428)(1.1.19), 1.767(0.315)(0.2.15), |
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Physical Properties of Vihorlatite
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| Color: |
Gray. |
| Density: |
8 |
| Diaphaneity: |
Opaque |
| Habit: |
Anhedral Grains - Granular minerals without the expression of crystal shapes |
| Habit: |
Triangular Crystals - Occurs as triangular shaped crystals. |
| Luster: |
Metallic |
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Calculated Properties of Vihorlatite
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| Electron Density: |
Bulk Density (Electron Density)=6.37 gm/cc
note: Specific Gravity of Vihorlatite =7.85 gm/cc.
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| Fermion Index: |
Fermion Index = 0.02
Boson Index = 0.98 |
| Photoelectric: |
PEVihorlatite =1,439.18 barns/electron
U=PEVihorlatite x rElectron Density=9,169.95 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Vihorlatite is Not Radioactive |
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Vihorlatite Classification
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| Dana Class: |
02.11.07.07 (02)Sulfides - Including Selenides and Tellurides |
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(02.11)where Am Bn Xp, with (m+n):p=2:3 |
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(02.11.07)Tetradymite Group (Trigonal: R-3m) |
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02.11.07.01 Tetradymite Bi2Te2S R 3m 3 2/m |
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02.11.07.02 Tellurobismuthite Bi2Te3 R 3m 3 2/m |
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02.11.07.03 Tellurantimony Sb2Te3 R 3m 3 2/m |
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02.11.07.04 Paraguanajuatite Bi2(Se,S)3 R 3m 3 2/m |
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02.11.07.05 Kawazulite Bi2(Te,Se,S)3 R 3m 3 2/m |
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02.11.07.06 Skippenite Bi2Se2(Te,S) R 3m 3 2/m |
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02.11.07.07 Vihorlatite! Bi24Se17Te4 P 3m1 3 2/m |
| Strunz Class: |
02.DC.05e 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.05e Baksanite! Bi6Te2S3 P 3m1 3 2/m |
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02.DC.05e Sztrokayite* Bi3TeS2 Trig ? Trig |
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02.DC.05e Protojoseite* Bi4TeS2(?) R 3m 3 2/m |
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02.DC.05e Vihorlatite! Bi24Se17Te4 P 3m1 3 2/m |
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Other Vihorlatite Information
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| References: |
NAME( AmMin, v93:254) PHYS. PROP.(AmMin, v93:254) |
| See Also: |
Links to other databases for Vihorlatite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
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Print or Cut-and-Paste your Vihorlatite Specimen Label here :
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Vihorlatite
Bi24Se17Te4
Dana No: 02.11.07.07 Strunz No: 02.DC.05e
Locality:
Notes:
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