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About ImhofiteHide

Crystal System:
For the professional mineral collector Joseph Imhof (1902-1969), Binn, Binn valley, Switzerland.
May be confused with some habits of lengenbachite.

Classification of ImhofiteHide


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

5 : 2.5 < ø < 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


Chemical Properties of ImhofiteHide

IMA Formula:

Crystallography of ImhofiteHide

Crystal System:
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)°
a:b:c = 0.358 : 1 : 0.235
Unit Cell V:
1,165.30 ų (Calculated from Unit Cell)
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

Simplified Chinese:硫砷铜铊矿

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.40JentschiteTlPbAs2SbS6Mon. 2/m
2.HD.45HutchinsoniteTlPbAs5S9Orth. mmm (2/m 2/m 2/m) : Pbca
2.HD.50BernarditeTlAs5S8Mon. 2/m : P21/b
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
5.5.9BernarditeTlAs5S8Mon. 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
5.5.16ChalcothalliteTl2(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
5.5.20ChabournéiteTl4Pb2(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.
  • 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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