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Imhofite

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About ImhofiteHide

Formula:
Tl5.8As15.4S26
Hardness:
2
Crystal System:
Monoclinic
Name:
For the professional mineral collector Joseph Imhof (1902-1969), Binn, Binn valley, Switzerland.
May be confused with some habits of lengenbachite.


Classification of ImhofiteHide

Approved
2.HD.30

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
D : With Tl
3.5.11.1

3 : SULFOSALTS
5 : 2.5 < ø < 3
5.5.3

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

Physical Properties of ImhofiteHide

Hardness:

Chemical Properties of ImhofiteHide

Formula:
Tl5.8As15.4S26
IMA Formula:
Tl5.8As15.4S26

Crystallography of ImhofiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 8.755(5) Å, b = 24.425(15) Å, c = 5.739(3) Å
β = 108.28(9)°
Ratio:
a:b:c = 0.358 : 1 : 0.235
Unit Cell V:
1,165.30 ų (Calculated from Unit Cell)
Z:
1
Comment:
Setting P21/n.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0010785ImhofiteDivjakovic V, Nowacki W (1976) Die kristallstruktur von imhofit, Tl5.6As15S25.3 Zeitschrift fur Kristallographie 144 323-3331976synthetic0293
CIF Raw Data - click here to close

Type Occurrence of ImhofiteHide

Other Language Names for ImhofiteHide

German:Imhofit
Simplified Chinese:硫砷铜铊矿
Spanish:Imhofita

Common AssociatesHide

Associated Minerals Based on Photo Data:
4 photos of Imhofite associated with OrpimentAs2S3
3 photos of Imhofite associated with RealgarAs4S4
2 photos of Imhofite associated with PyriteFeS2
2 photos of Imhofite associated with HutchinsoniteTlPbAs5S9
2 photos of Imhofite associated with Lengenbachite Ag4Cu2Pb18As12S39
1 photo of Imhofite associated with RathiteAg2Pb12-xTlx/2As18+x/2S40
1 photo of Imhofite associated with SmithiteAgAsS2
1 photo of Imhofite associated with BernarditeTlAs5S8
1 photo of Imhofite associated with HatchiteAgTlPbAs2S5
1 photo of Imhofite associated with DolomiteCaMg(CO3)2

Related Minerals - Nickel-Strunz GroupingHide

2.HD.05LoránditeTlAsS2Mon. 2/m : P21/b
2.HD.05WeissbergiteTlSbS2Tric. 1 : P1
2.HD.15ChristiteTlHgAsS3Mon. 2/m
2.HD.20JankovićiteTl5Sb9(As,Sb)4S22Tric. 1 : P1
2.HD.25RebuliteTl5Sb5As8S22Mon. 2/m : P21/b
2.HD.35EdenharteritePbTlAs3S6Orth.
2.HD.40JentschiteTlPbAs2SbS6Mon. 2/m
2.HD.45HutchinsoniteTlPbAs5S9Orth. mmm (2/m 2/m 2/m) : Pbca
2.HD.50BernarditeTlAs5S8Mon. 2/m : P21/b
2.HD.55SicheriteTlAg2(As,Sb)3S6Orth.
2.HD.60GabrieliteTl6Ag3Cu6(As,Sb)9S21Tric. 1 : P1

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

5.5.1LoránditeTlAsS2Mon. 2/m : P21/b
5.5.2EllisiteTl3AsS3Trig. 3m : R3m
5.5.4SimoniteTlHgAs3S6Mon. 2/m
5.5.6ChristiteTlHgAsS3Mon. 2/m
5.5.6RouthieriteTl(Cu,Ag)(Hg,Zn)2(As,Sb)2S6Tet. 4 2m : I4 2m
5.5.7HutchinsoniteTlPbAs5S9Orth. mmm (2/m 2/m 2/m) : Pbca
5.5.8Wallisite(Cu,Ag)TlPbAs2S5Tric.
5.5.9BernarditeTlAs5S8Mon. 2/m : P21/b
5.5.10VrbaiteHg3Tl4As8Sb2S20Orth. mmm (2/m 2/m 2/m) : Cmca
5.5.11RebuliteTl5Sb5As8S22Mon. 2/m : P21/b
5.5.12GillulyiteTl2As7.5Sb0.3S13Mon. 2/m
5.5.13WeissbergiteTlSbS2Tric. 1 : P1
5.5.14Rohaite(Tl,Pb,K)2Cu8.7Sb2S4Orth.
5.5.15VaughaniteTlHgSb4S7Tric.
5.5.16ChalcothalliteTl2(Cu,Fe)6SbS4Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
5.5.17PierrotiteTl2(Sb,As)10S16Orth. mm2 : Pna21
5.5.18ParapierrotiteTlSb5S8Mon. m
5.5.19CriddleiteTlAg2Au3Sb10S10Mon.
5.5.20ChabournéiteTl4Pb2(Sb,As)20S34Tric. 1 : P1

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for ImhofiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Burri, G., Graeser, S., Marumo, F., Nowacki, W. (1965): Imhofit, ein neues Thallium-arsensulfosalz aus dem Lengenbach (Binnatal, Kanton Wallis). Chimia 19, 499-500.
American Mineralogist: 51: 531.
Divjakovic, V., Nowacki, W. (1976): Die Kristallstruktur von Imhofit, Tl5.6As15S25.3. Zeitschrift für Kristallographie 144, 323-333.
American Mineralogist: 54: 1498.
Balić-Žunić, T., Makovicky, E. (1993): Contributions to the crystal chemistry of thallium sulphosalts. I. The O-D nature of imhofite. Neues Jahrbuch für Mineralogie, Abhandlungen 165, 317-330.
Makovicky, E., Balić-Žunić, T. (1999): Gillulyite Tl2(As,Sb)8S13: Reinterpretation of the crystal structure and order-disorder phenomena. American Mineralogist, 84, 400-406. [includes a comparison with imhofite]

Internet Links for ImhofiteHide

Localities for ImhofiteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
China
 
  • Guizhou
    • Qianxinan
      • Xingren County
Tangfu Xiao (2001): PhD Thesis, University of Québec, Canda.
  • Hunan
    • Changde
      • Shimen Co.
        • Shimen deposit (Huangchang deposit)
Roth, P., Raber, T., Favreau, G. and Meisser, N. (2017): Thallium Sulfosalts from the Shimen As-Deposit, Hunan, China. Mineral Up 4(6): 8-22; Dan Topa and Uwe Kolitsch, unpubl. re-analysis (detailed article on the sulphosalt mineralogy of the Shimen mine is in preparation)
Switzerland (TL)
 
  • Valais
    • Goms
      • Binn
        • Fäld
[MinRec 8:276, 8:279, 25:140]
 
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