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Weissbergite

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Formula:
TlSbS2
System:
Triclinic
Colour:
Steel-gray
Lustre:
Metallic
Hardness:
Name:
Named after Byron G. Weissberg (b. 1930), geologist and mineralogist, Department of Scientific and Industrial Research (New Zealand).
Chemically, the Sb analogue of (monoclinic) lorándite.


Classification of Weissbergite

Approved
Approval Year:
1975
2.HD.05

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
D : With Tl
3.7.7.1

3 : SULFOSALTS
7 : ø = 2
5.5.13

5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
5 : Sulpharsenites etc. of Tl

Physical Properties of Weissbergite

Metallic
Diaphaneity (Transparency):
Opaque
Colour:
Steel-gray
Streak:
Dark gray
Hardness (Mohs):
Tenacity:
Brittle
Cleavage:
Perfect
Four different cleavages: one perfect, two very good, one good.
Density:
5.79 g/cm3 (Measured)    6.22 g/cm3 (Calculated)

Optical Data of Weissbergite

Type:
Anisotropic
Anisotropism:
Strong
Reflectivity:
nmR= = 35.0 - 36.8 (546 nm%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 0%.

Chemical Properties of Weissbergite

Formula:
TlSbS2
Elements listed in formula:

Crystallography of Weissbergite

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 6.123 Å, b = 6.293 Å, c = 11.838 Å
α = 101.34°, β = 98.39°, γ = 103.21°
Ratio:
a:b:c = 0.973 : 1 : 1.881
Unit Cell Volume:
V 426.61 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Frequently anhedral granular.
Comment:
Originally assumed to have space group P1 (no. 1).
X-Ray Powder Diffraction Data:
d-spacingIntensity
3.75 (10)
3.71 (10)
3.65 (10)
3.58 (10)
2.97 (100)
2.84 (10)
2.35 (10)
1.49 (10)
Comments:
ICDD 29-1331 (synthetic)

Type Occurrence of Weissbergite

Geological Setting of Type Material:
Hydrothermal deposits

Relationship of Weissbergite to other Species

2.HD.05LoránditeTlAsS2
2.HD.15ChristiteTlHgAsS3
2.HD.20JankovićiteTl5Sb9(As,Sb)4S22
2.HD.25RebuliteTl5Sb5As8S22
2.HD.30ImhofiteTl5.8As15.4S26
2.HD.35EdenharteriteTlPbAs3S6
2.HD.40JentschiteTlPbAs2SbS6
2.HD.45HutchinsoniteTlPbAs5S9
2.HD.50BernarditeTlAs5S8
2.HD.55SicheriteTlAg2(As,Sb)3S6
2.HD.60GabrieliteTl2AgCu2As3S7
5.5.1LoránditeTlAsS2
5.5.2EllisiteTl3AsS3
5.5.3ImhofiteTl5.8As15.4S26
5.5.4SimoniteTlHgAs3S6
5.5.6ChristiteTlHgAsS3
5.5.6RouthieriteCuTlHg2As2S6
5.5.7HutchinsoniteTlPbAs5S9
5.5.8WallisiteCuPbTlAs2S5
5.5.9BernarditeTlAs5S8
5.5.10VrbaiteHg3Tl4As8Sb2S20
5.5.11RebuliteTl5Sb5As8S22
5.5.12GillulyiteTl2As7.5Sb0.3S13
5.5.14Rohaite(Tl,Pb,K)2Cu8.7Sb2S4
5.5.15VaughaniteTlHgSb4S7
5.5.16Chalcothallite(Cu,Fe,Ag)6.3(Tl,K)2SbS4
5.5.17PierrotiteTlSb3As2S8
5.5.18ParapierrotiteTlSb5S8
5.5.19CriddleiteAg2Au3TlSb10S10
5.5.20ChabournéiteTl4Pb2(Sb,As)20S34

Other Names for Weissbergite

Name in Other Languages:
Simplified Chinese:维硫锑铊矿
Spanish:Weissbergita

Other Information

Health Risks:
Contains thallium - always wash hands after handling. Avoid inhaling dust when handling or breaking. Never lick or ingest.

References for Weissbergite

Reference List:
American Mineralogist (1977): 62: 720-724.

Dickson, F. W. (1978): Weissbergite, TlSbS2, a new mineral from the Carlin gold deposit, Nevada. American Mineralogist, 63, 720-724.

Rey, N, Jumas, J. C., Olivier-Fourcade, J., and Philippot, E. (1983): Sur les composés III-V-VI: Etude structurale du disulfure d’antimoine et de thallium. Acta Crystallographica, 39, 971-974.

Mineralogical Record (1993): 24: 446.

Kharbish, S. (2011): Raman spectrosopic investigations of some Tl-sulfosalt minerals containing pyramidal (As,Sb)S3 groups. American Mineralogist, 96, 609-616.


Internet Links for Weissbergite

mindat.org URL:
https://www.mindat.org/min-4262.html
Please feel free to link to this page.

Localities for Weissbergite

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Republic of Macedonia
 
  • Rožden (Rozhden; Roszdan)
[Rieck, B. (1993) - Famous mineral localities: Allchar, Macedonia, Mineralogical Record, 24 (6), 437-449]; Boevl, B., Bermanec, V., Serafimovski, T., Lepitkoval, S., & Mikulcic, S. (2001). Allchar Mineral Assemblage. Geologica Macedonica, Vol. 15-16, p. 1-23 (2001-2002) Suppl
Switzerland
 
  • Wallis (Valais)
    • Binn Valley
      • Fäld (Imfeld; Im Feld; Feld)
Raber, T. and Roth, P. (2014) Weissbergit, ein Thallium-Antimon-Sulfosalz. Schweizer Strahler, 48 (4), 18-19. [EDX analyses by FGL T. Raber & P. Roth, May 2012 - Sep. 2013 on three different specimens, XRD analyses by Prof. Nestola, Padova, Italy, November 2012 (see also http://fglb.clubdesk.ch/clubdesk/www)]
USA (TL)
 
  • Nevada
    • Eureka Co.
      • Lynn District
        • Elko
Amer.Min.(1977) 62, 720-724; Min.Rec.:20:469.
  • Utah
    • Tooele Co.
      • Sheeprock Mts
        • Little Valley
King, N. R. (2014, October). THE MINERAL ASSEMBLAGE FROM LOOKOUT PASS AREA, SHEEPROCK MOUNTAINS, TOOELE CO., UTAH. In 2014 GSA Annual Meeting in Vancouver, British Columbia.
Mineral and/or Locality  
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