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Weissbergite Mineral Data
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General Weissbergite Information
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 Chemical Formula: |
TlSbS2 |
| Composition: |
Molecular Weight = 390.27 gm |
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Thallium 52.37 % Tl |
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Antimony 31.20 % Sb |
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Sulfur 16.43 % S |
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______ |
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100.00 % |
| Empirical Formula: |
TlSbS2 |
| Environment: |
In late stage hydrothermal veins that brecciate silicified dolomitic carbonate rocks. |
| IMA Status: |
Approved IMA 1978 |
| Locality: |
East ore zone, Carlin mine, Elko, Eureka County, Nevada, USA Link to MinDat.org Location Data. |
| Name Origin: |
Named for Byron G. Weissberg, Chemistry division, D.S.I.R., New Zeland. |
| Name Pronunciation: |
Weissbergite + Pronunciation  |
| Synonym: |
ICSD 35498 |
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PDF 29-1331 |
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Weissbergite Image |
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Images:
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Weissbergite Crystallography
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| Axial Ratios: |
a:b:c =1.8593:1:0.9531 |
| Cell Dimensions: |
a = 11.9, b = 6.4, c = 6.1, Z = 4; alpha = 109.9°, beta = 81.8°, gamma = 105.4° V = 416.85 Den(Calc)= 6.22 |
| Crystal System: |
Triclinic - Pedial H-M Symbol (1) Space Group: P1 |
| X Ray Diffraction: |
By Intensity(I/Io): 2.971(1), 3.583(0.09), 3.651(0.09), |
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Physical Properties of Weissbergite
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| Cleavage: |
{???} Perfect, {???} Very Good, {???} Very Good |
| Color: |
Steel gray. |
| Density: |
5.79 |
| Diaphaneity: |
Opaque |
| Habit: |
Irregular Grains - Occurs as splotchy, anhedral crystals forming inclusions in other minerals or rocks. |
| Habit: |
Striated - Parallel lines on crystal surface or cleavage face. |
| Hardness: |
1.5 - Between Talc and Gypsum |
| Luster: |
Metallic |
| Streak: |
reddish gray |
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Optical Properties of Weissbergite
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| RL Anisotrophism: |
Strong, blue-green. |
| RL Color: |
Creamy white. |
| RL Pleochroism: |
Weak. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Weissbergite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 470 nm |
36.00 |
38.40 |
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| 546 nm |
35.00 |
36.80 |
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| 589 nm |
34.50 |
35.80 |
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| 650 nm |
32.10 |
33.80 |
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Calculated Relative Intensity Colors of Weissbergite in Air
Relative
Intensity |
0% |
30% |
60% |
90% |
100% |
120% |
150% |
180% |
210% |
240% |
260% |
| R1 |
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| R2 |
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Calculated Properties of Weissbergite
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| Electron Density: |
Bulk Density (Electron Density)=5.18 gm/cc
note: Specific Gravity of Weissbergite =6.16 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0012324693
Boson Index = 0.9987675307 |
| Photoelectric: |
PEWeissbergite =1,026.67 barns/electron
U=PEWeissbergite x rElectron Density=5,315.26 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Weissbergite is Not Radioactive |
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Weissbergite Classification
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| Dana Class: |
03.07.07.01 (03)Sulfides - Sulfosalts |
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(03.07)where z/y = 2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals |
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(03.07.07)Dana Group |
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03.07.07.01 Weissbergite TlSbS2 P1 1 |
| Strunz Class: |
02.HD.05 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.H - Sulfosalts of SnS Archetype |
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02.HD -With Tl |
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02.HD.05 Lorandite TlAsS2 P 21/a 2/m |
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02.HD.05 Weissbergite TlSbS2 P1 1 |
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Other Weissbergite 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 Weissbergite :
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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Weissbergite
TlSbS2
Dana No: 03.07.07.01 Strunz No: 02.HD.05
Locality:
Notes:
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