Mineralogy Database

Weissbergite Mineral Data

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General Weissbergite Information

Help on Chemical  Formula: Chemical Formula: TlSbS2
Help on Composition: Composition: Molecular Weight = 390.27 gm
   Thallium  52.37 %  Tl
   Antimony  31.20 %  Sb
   Sulfur    16.43 %  S
            100.00 % 
Help on Empirical Formula: Empirical Formula: TlSbS2
Help on Environment: Environment: In late stage hydrothermal veins that brecciate silicified dolomitic carbonate rocks.
Help on IMA Status: IMA Status: Approved IMA 1978
Help on Locality: Locality: East ore zone, Carlin mine, Elko, Eureka County, Nevada, USA Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Byron G. Weissberg, Chemistry division, D.S.I.R., New Zeland.
Help on Name Pronunciation: Name Pronunciation: Weissbergite + Pronunciation Say WEISSBERGITE
Help on Synonym: Synonym: ICSD 35498
  PDF 29-1331

Weissbergite Image

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Comments: A metallic grain of weissbergite in matrix.
Location: Lookout Pass, Tooele Co., Utah, USA. Scale: Grain size 0.75 mm.
© Tom Loomis / Dakota Matrix

Weissbergite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.8593:1:0.9531
Help on Cell Dimensions: 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
Help on Crystal System: Crystal System: Triclinic - Pedial H-M Symbol (1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.971(1), 3.583(0.09), 3.651(0.09),

Physical Properties of Weissbergite

Help on Cleavage: Cleavage: {???} Perfect, {???} Very Good, {???} Very Good
Help on Color: Color: Steel gray.
Help on Density: Density: 5.79
Help on Diaphaneity: Diaphaneity: Opaque
Help on Habit: Habit: Irregular Grains - Occurs as splotchy, anhedral crystals forming inclusions in other minerals or rocks.
Help on Habit: Habit: Striated - Parallel lines on crystal surface or cleavage face.
Help on Hardness: Hardness: 1.5 - Between Talc and Gypsum
Help on Luster: Luster: Metallic
Help on Streak: Streak: reddish gray

Optical Properties of Weissbergite

Help on RL Anisotrophism: RL Anisotrophism: Strong, blue-green.
Help on RL Color: RL Color: Creamy white.
Help on RL Pleochroism: RL Pleochroism: Weak.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Weissbergite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 470 nm   36.00   38.40 
 546 nm   35.00   36.80 
 589 nm   34.50   35.80 
 650 nm   32.10   33.80 
Calculated Relative Intensity Colors of Weissbergite in Air
   0%   30%   60%   90% 100% 120% 150% 180% 210% 240% 260%

Calculated Properties of Weissbergite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.18 gm/cc
note: Specific Gravity of Weissbergite =6.16 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0012324693
Boson Index = 0.9987675307
Help on Photoelectric: Photoelectric: PEWeissbergite =1,026.67 barns/electron
U=PEWeissbergite x rElectron Density=5,315.26 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Weissbergite is Not Radioactive

Weissbergite Classification

Help on  Dana Class: Dana Class: (03)Sulfides - Sulfosalts
  (03.07)where z/y = 2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (03.07.07)Dana Group Weissbergite TlSbS2 P1 1
Help on  Strunz Class: Strunz Class: 02.HD.05 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.H - Sulfosalts of SnS Archetype
  02.HD -With Tl
02.HD.05 Lorandite TlAsS2 P 21/a 2/m
02.HD.05 Weissbergite TlSbS2 P1 1

Other Weissbergite 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 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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Dana No: Strunz No: 02.HD.05





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