Weissbergite
A valid IMA mineral species
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About Weissbergite
Formula:
TlSbS2
Colour:
Steel-gray
Lustre:
Metallic
Hardness:
1½
Specific Gravity:
5.79
Crystal System:
Triclinic
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.
Compare the closely related drechslerite (with As-Sb ordering in the crystal structure).
Compare the closely related drechslerite (with As-Sb ordering in the crystal structure).
Unique Identifiers
Mindat ID:
4262
Long-form identifier:
mindat:1:1:4262:4
GUID
(UUID V4):
(UUID V4):
2f63315d-1454-4c56-93f7-f35d05094cab
IMA Classification of Weissbergite
Approved
Approval year:
1975
First published:
1978
Classification of Weissbergite
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
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
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
5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
5 : Sulpharsenites etc. of Tl
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Wsb | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Weissbergite
Metallic
Transparency:
Opaque
Colour:
Steel-gray
Streak:
Dark gray
Hardness:
1½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
Four different cleavages: one perfect, two very good, one good.
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
Anisotropism:
Strong, blue-green, blue-black, orange-brown, gray
Reflectivity:
Wavelength | R1 | R2 |
---|---|---|
470nm | 36.0% | 38.4% |
546nm | 35.0% | 36.8% |
589nm | 34.5% | 35.8% |
650nm | 32.1% | 33.8% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 38.4%.
R1 shown in black, R2 shown in red
Colour in reflected light:
creamy white
Pleochroism:
Weak
Chemistry of Weissbergite
Mindat Formula:
TlSbS2
Elements listed:
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°
α = 101.34°, β = 98.39°, γ = 103.21°
Ratio:
a:b:c = 0.973 : 1 : 1.881
Unit Cell V:
426.61 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Frequently anhedral granular.
Comment:
Originally assumed to have space group P1 (no. 1).
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
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CIF File Best | x | y | z | a | b | c
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0009980 | Weissbergite | Rey N, Jumas J C, Olivier-Fourcade J, Philippot E (1983) Sur les composes III-V-VI: Etude structurale du disulfure d'antimoine et de thallium, TlSbS2 Acta Crystallographica C39 971-974 | 1983 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.75 Å | (10) |
3.71 Å | (10) |
3.65 Å | (10) |
3.58 Å | (10) |
2.97 Å | (100) |
2.84 Å | (10) |
2.35 Å | (10) |
1.49 Å | (10) |
Comments:
ICDD 29-1331 (synthetic)
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
High-𝑇 alteration and/or metamorphism | |
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) |
Type Occurrence of Weissbergite
General Appearance of Type Material:
Irregular, broken or fractured grains, 0.5 mm in maximum dimension.
Place of Conservation of Type Material:
Department of Geology, Stanford University, Palo Alto, California, Epithermal Minerals Collection.
National Museum of Natural History, Washington, D.C., USA, 144274.
National Museum of Natural History, Washington, D.C., USA, 144274.
Geological Setting of Type Material:
Carlin type hydrothermal deposit.
Associated Minerals at Type Locality:
Reference:
Dickson, F.W., Radtke, A.S. (1978) Weissbergite, TlSbS2, a new mineral from the Carlin gold deposit, Nevada. American Mineralogist, 63, 720-724.
Synonyms of Weissbergite
Other Language Names for Weissbergite
Common Associates
Associated Minerals Based on Photo Data:
13 photos of Weissbergite associated with Parapierrotite | TlSb5S8 |
7 photos of Weissbergite associated with Chert | |
5 photos of Weissbergite associated with Kermesite | Sb2S2O |
4 photos of Weissbergite associated with Pyrite | FeS2 |
3 photos of Weissbergite associated with Chalcedony | SiO2 |
1 photo of Weissbergite associated with Graphite | C |
Related Minerals - Strunz-mindat Grouping
2.HD. | Boscardinite | TlPb4(Sb7As2)S18 |
2.HD. | Enneasartorite | Tl6Pb32As70S140 |
2.HD. | Gungerite | TlAs5Sb4S13 |
2.HD. | Shimenite | Tl5Sb21-yAsyS34 |
2.HD. | Dewitite | AgzTl10-x-zPb2xSb42-x-yAsyS68 |
2.HD. | Vallouiseite | Ag3Tl21.5PbSb63As41.5S170 |
2.HD. | Buynite | TlPb14As17S40 |
2.HD. | Giuşcăite | Ag2Tl4Pb4As20Sb2S40 |
2.HD.05e | Chabournéite | AgzTl8-x-zPb4+2xSb40-x-yAsyS68 with 0.00 < x < 0.40(9), 16.15(3)< y < 19.11(10), 0.04(4) < z < 0.11(6) |
2.HD.05 | Lorándite | TlAsS2 |
2.HD.05e | Dalnegroite | (Tl4Pb2)(As12Sb8)S34 |
2.HD.15 | Christite | TlHgAsS3 |
2.HD.15 | Richardsollyite | TlPbAsS3 |
2.HD.20 | Jankovićite | Tl5Sb9(As,Sb)4S22 |
2.HD.25 | Rebulite | Tl5Sb5As8S22 |
2.HD.30 | Imhofite | Tl5.8As15.4S26 |
2.HD.35 | Edenharterite | PbTlAs3S6 |
2.HD.40 | Jentschite | TlPbAs2SbS6 |
2.HD.45 | Hutchinsonite | TlPbAs5S9 |
2.HD.45 | Protochabournéite | Tl4-xPb2+2xSb20-x-yAsyS34 with 0.02(2) < x < 0.34(2), 5.71(9) < y < 6.69(9) |
2.HD.50 | Bernardite | TlAs5S8 |
2.HD.55 | Sicherite | TlAg2(As,Sb)3S6 |
2.HD.55 | Geuerite | Ag2Tl4Pb4As22S40 |
2.HD.60 | Gabrielite | Tl6Ag3Cu6(As,Sb)9S21 |
2.HD.65 | Tsygankoite | Mn8Tl8Hg2(Sb21Pb2Tl)S48 |
2.HD.70 | Drechslerite | Tl4(Sb4-xAsx)S8 (1 < x < 2) |
Other Information
Health Risks:
Contains thallium - always wash hands after handling. Avoid inhaling dust when handling or breaking. Never lick or ingest.
Internet Links for Weissbergite
mindat.org URL:
https://www.mindat.org/min-4262.html
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References for Weissbergite
Localities for Weissbergite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
North Macedonia | |
| Rieck (1993) +1 other reference |
Russia | |
| Anisimova et al. (2020) +2 other references |
| Kasatkin et al. (2022) |
| Stepanov +9 other references |
Switzerland | |
| - (n.d.) |
USA (TL) | |
| Min.Rec.:20:469. +1 other reference |
| King (2014, October) |
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Lookout Pass Thallium prospect, Little Valley, Lookout Pass Mining District, Tooele County, Utah, USA