Jentschite
A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.
About Jentschite
Formula:
TlPbAs2SbS6
Colour:
Black
Lustre:
Metallic, Sub-Metallic
Hardness:
2 - 2½
Specific Gravity:
5.24 (Calculated)
Crystal System:
Monoclinic
Name:
The name honours Franz Jentsch (1868–1908), an early prolific collector of Lengenbach minerals.
Type Locality:
This page provides mineralogical data about Jentschite.
Unique Identifiers
Mindat ID:
5745
Long-form identifier:
mindat:1:1:5745:1
GUID
(UUID V4):
(UUID V4):
fe3f48dc-f11b-4d71-8f7c-17d4d641a410
IMA Classification of Jentschite
Approved
First published:
1997
Classification of Jentschite
2.HD.40
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 |
---|---|---|
Jts | 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 Jentschite
Metallic, Sub-Metallic
Colour:
Black
Streak:
Dark red
Hardness:
2 - 2½ on Mohs scale
Hardness:
VHN10=38 - 51 kg/mm2 - Vickers
Tenacity:
Very brittle
Cleavage:
Perfect
On {101}
On {101}
Density:
5.24 g/cm3 (Calculated)
Optical Data of Jentschite
Anisotropism:
Distinct
Reflectivity:
Wavelength | R1 | R2 |
---|---|---|
470nm | 29.7% | 35.4% |
543nm | 28.8% | 33.1% |
587nm | 26.7% | 30.3% |
657nm | 26.6% | 29.9% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 35.4%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Pale gray
Chemistry of Jentschite
Mindat Formula:
TlPbAs2SbS6
Crystallography of Jentschite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 8.0958(5) Å, b = 23.917(2) Å, c = 5.8876(5) Å
β = 108.063(8)°
β = 108.063(8)°
Ratio:
a:b:c = 0.338 : 1 : 0.246
Unit Cell V:
1,083.82 ų (Calculated from Unit Cell)
Z:
4
Comment:
Space-group setting P21/n.
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
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) |
---|---|---|---|---|---|---|---|
0015411 | Jentschite | Berlepsch P (1996) Crystal structure and crystal chemistry of the homeotypes edenharterite (TlPbAs3S6) and jentschite (TlPbAs2SbS6) from Lengenbach, Binntal (Switzerland) Schweizerische Mineralogische und Petrographische Mitteilungen 76 147-157 | 1996 | Lengenbach quarry, Binntal, Valais, Switzerland | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
2.823 Å | (100) |
3.587 Å | (86) |
2.778 Å | (84) |
3.998 Å | (74) |
2.670 Å | (58) |
3.816 Å | (54) |
5.346 Å | (32) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Near-surface Processes | |
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47) | |
High-𝑇 alteration and/or metamorphism | |
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) |
Type Occurrence of Jentschite
Place of Conservation of Type Material:
Natural History Museum; Mineralogical Institute, University of Basel, Basel, Switzerland.
Geological Setting of Type Material:
Hydrothermal
Associated Minerals at Type Locality:
Reference:
Graeser, S., Edenharter, A. (1997) Jentschite (TlPbAs2SbS6)–a new sulphosalt mineral from Lengenbach, Binntal (Switzerland). Mineralogical Magazine: 61: 131–137.
Synonyms of Jentschite
Other Language Names for Jentschite
Common Associates
Associated Minerals Based on Photo Data:
4 photos of Jentschite associated with Realgar | As4S4 |
1 photo of Jentschite associated with Nowackiite | Cu6Zn3As4S12 |
1 photo of Jentschite associated with Sphalerite | ZnS |
1 photo of Jentschite associated with Dolomite | CaMg(CO3)2 |
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.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.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) |
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 Jentschite
mindat.org URL:
https://www.mindat.org/min-5745.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Jentschite
Reference List:
Localities for Jentschite
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.
Russia | |
| |
Switzerland (TL) | |
|
Quick NavTopAbout JentschiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Lengenbach Quarry, Fäld, Binn, Goms, Valais, Switzerland