Weissbergite Mineral Data

General Weissbergite Information

Chemical Formula:

TlSbS2

Composition:

Molecular Weight = 390.27 gm

Thallium 52.37 % Tl

Antimony 31.20 % Sb

Sulfur 16.43 % S

______

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

PDF 29-1331

Weissbergite Image

Images:

Weissbergite

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

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 - PedialH-M Symbol (1) Space Group: P1

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.971(1), 3.583(0.09), 3.651(0.09),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Rey N , Jumas J C , Olivier-Fourcade J , Philippot E , Acta Crystallographica, Section C , 39 (1983) p.971-974, Sur les composes III-V-VI: Etude structurale du, disulfure d antimoine et de thallium, TlSbS2, Locality: synthetic

Physical Properties of Weissbergite

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

Optical Properties of Weissbergite

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	∑ 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**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%	240%	260%
R₁
R₂

Calculated Properties of Weissbergite

Electron Density:

Bulk Density (Electron Density)=5.18 gm/cc
note: Specific Gravity of Weissbergite =6.16 gm/cc.

Fermion Index:

Fermion Index = 0.0012324693
Boson Index = 0.9987675307

Photoelectric:

PE_Weissbergite=1,026.67 barns/electron
U=PE_Weissbergite x rElectron Density=5,315.26 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Weissbergite is Not Radioactive

Weissbergite Classification

Dana Class:

03.07.07.01 (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

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

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

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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Print or Cut-and-Paste your Weissbergite Specimen Label here :

Weissbergite

TlSbS2
Dana No: 03.07.07.01 Strunz No: 02.HD.05
Locality:

Notes: