Gungerite
A valid IMA mineral species
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Formula:
TlAs5Sb4S13
Colour:
Bright orange
Lustre:
Greasy
Hardness:
2 - 2½
Specific Gravity:
4.173 (Calculated)
Crystal System:
Orthorhombic
Name:
For Uri Vladimirovich Gunger (August 6, 1961 - ) mining engineer, surveyor, historian of the Northern Urals.
New structure type. Chemically related to jankovićite and rebulite. Also somewhat chemically similar to drechslerite, gillulyite, and pierrotite.
Unique Identifiers
Mindat ID:
55028
Long-form identifier:
mindat:1:1:55028:2
GUID
(UUID V4):
(UUID V4):
7ecda31b-95fd-40bc-9f92-0da01077dea9
IMA Classification of Gungerite
Approved
First published:
2022
Classification of Gungerite
2.HD.
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
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 |
---|---|---|
Gng | 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 Gungerite
Greasy
Transparency:
Translucent
Colour:
Bright orange
Streak:
Orange
Hardness:
2 - 2½ on Mohs scale
Hardness:
VHN10=84 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
Perfect
{010}
{010}
Fracture:
Irregular/Uneven
Density:
4.173 g/cm3 (Calculated)
Optical Data of Gungerite
Bireflectance:
weak
Colour in reflected light:
yellowish white
Internal Reflections:
bright orange
Chemistry of Gungerite
Mindat Formula:
TlAs5Sb4S13
Elements listed:
Crystallography of Gungerite
Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pbcn
Setting:
Pbcn
Cell Parameters:
a = 20.1958(3) Å, b = 11.5258(2) Å, c = 20.1430(2) Å
Ratio:
a:b:c = 1.752 : 1 : 1.748
Unit Cell V:
4,688.74 ų (Calculated from Unit Cell)
Z:
8
Twinning:
Twinning on (101).
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
5.755 Å | (100) |
4.273 Å | (4) |
3.705 Å | (6) |
3.030 Å | (10) |
2.901 Å | (10) |
2.878 Å | (14) |
2.850 Å | (5) |
2.821 Å | (10) |
Type Occurrence of Gungerite
Place of Conservation of Type Material:
Collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Leninskiy Prospekt 18-2, Moscow 119071, Russia, registration number 5518/1.
Geological Setting of Type Material:
It occurs in limestone breccias composed of calcite and dolomite and cemented by orpiment, pyrite, realgar, stibnite, and minor baryte and quartz. It belongs to the latest phases among sulfosalts (chiefly Tl-As-Sb ones) present in the ore.
Associated Minerals at Type Locality:
Synonyms of Gungerite
Related Minerals - Strunz-mindat Grouping
2.HD. | Boscardinite | TlPb4(Sb7As2)S18 |
2.HD. | Enneasartorite | Tl6Pb32As70S140 |
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.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.05 | Weissbergite | TlSbS2 |
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.60 | Gabrielite | Tl6Ag3Cu6(As,Sb)9S21 |
2.HD.65 | Tsygankoite | Mn8Tl8Hg2(Sb21Pb2Tl)S48 |
2.HD.70 | Drechslerite | Tl4(Sb4-xAsx)S8 (1 < x < 2) |
Fluorescence of Gungerite
none
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Gungerite
mindat.org URL:
https://www.mindat.org/min-55028.html
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References for Gungerite
Reference List:
Kasatkin, Anatoly V., Plášil, Jakub, Makovicky, Emil, Chukanov, Nikita V., Škoda, Radek, Agakhanov, Atali A., Tsyganko, Mikhail V. (2022) Gungerite, TlAs5Sb4S13, a new thallium sulfosalt with a complex structure containing covalent As-As bonds. American Mineralogist, 107 (6) 1164-1173 doi:10.2138/am-2022-8003
Localities for Gungerite
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.