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Imhofite

Big Photo

Lengenbach Quarry, Im Feld (Imfeld; Feld; Fäld), Binn Valley, Wallis (Valais), Switzerland
© O. Dziallas

Show Imhofite Photos (16)
Formula:
Tl
 
6
CuAs
 
16
S
 
40
System:MonoclinicHardness:2
Name:For Joseph Imhof (1902-1969).


May be confused with some habits of lengenbachite.

Classification of Imhofite

IMA status:Approved
Strunz 8th edition ID:2/E.14-15
Nickel-Strunz 10th (pending) edition ID: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
Dana 8th edition ID:3.5.11.1

3 : SULFOSALTS
5 : 2.5 < ø < 3
Hey's CIM Ref.:5.5.3

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

Type Locality:Lengenbach Quarry, Im Feld (Imfeld; Feld; Fäld), Binn Valley, Wallis (Valais), Switzerland
Year of Discovery:1965

Physical Properties of Imhofite

Hardness (Mohs):2

Crystallography of Imhofite

Crystal System:Monoclinic
Cell Parameters:a = 8.77Å, b = 14.51Å, c = 11.44Å
β = 107°
Ratio:a:b:c = 0.604 : 1 : 0.788
Unit Cell Volume:V 1,392.16 ų (Calculated from Unit Cell)

Chemical Properties of Imhofite

Formula:
Tl
 
6
CuAs
 
16
S
 
40
Essential elements:As, Cu, S, Tl
All elements listed in formula:As, Cu, S, Tl

Relationship of Imhofite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
2.HD.05Lorándite
TlAsS
 
2
2.HD.05Weissbergite
TlSbS
 
2
2.HD.15Christite
TlHgAsS
 
3
2.HD.20Jankovićite
Tl
 
5
Sb
 
9
(As,Sb)
 
4
S
 
22
2.HD.20Jankovicite
2.HD.25Rebulite
Tl
 
5
Sb
 
5
As
 
8
S
 
22
2.HD.35Edenharterite
PbTlAs
 
3
S
 
6
2.HD.40Jentschite
TlPbAs
 
2
SbS
 
6
2.HD.45Hutchinsonite
(Tl,Pb)
 
2
As
 
5
S
 
9
2.HD.50Bernardite
Tl(As,Sb)
 
5
S
 
8
2.HD.55Sicherite
TlAg
 
2
(As,Sb)
 
3
S
 
6
2.HD.60Gabrielite
Tl
 
6
Ag
 
3
Cu
 
6
(As,Sb)
 
9
S
 
21
Related Minerals - Hey's Index Grouping:

- +
5.5.1Lorándite
TlAsS
 
2
5.5.2Ellisite
Tl
 
3
AsS
 
3
5.5.4Simonite
TlHgAs
 
3
S
 
6
5.5.6Christite
TlHgAsS
 
3
5.5.6Routhierite
Tl(Cu,Ag)(Hg,Zn)
 
2
(As,Sb)
 
2
S
 
6
5.5.7Hutchinsonite
(Tl,Pb)
 
2
As
 
5
S
 
9
5.5.8Wallisite
(Cu,Ag)TlPbAs
 
2
S
 
5
5.5.9Bernardite
Tl(As,Sb)
 
5
S
 
8
5.5.10Vrbaite
Tl
 
4
Hg
 
3
Sb
 
2
As
 
8
S
 
20
5.5.11Rebulite
Tl
 
5
Sb
 
5
As
 
8
S
 
22
5.5.12Gillulyite
Tl
 
2
(As,Sb)
 
8
S
 
13
5.5.13Weissbergite
TlSbS
 
2
5.5.14Rohaite
(Tl,Pb,K)
 
2
Cu
 
8.7
Sb
 
2
S
 
4
5.5.15Vaughanite
TlHgSb
 
4
S
 
7
5.5.16Chalcothallite
Tl
 
2
(Cu,Fe)
 
6
SbS
 
4
5.5.17Pierrotite
Tl
 
2
Sb
 
6
As
 
4
S
 
16
5.5.18Parapierrotite
Tl(Sb,As)
 
5
S
 
8
5.5.19Criddleite
TlAg
 
2
Au
 
3
Sb
 
10
S
 
10
5.5.20Chabournéite
Tl
 
21-x
Pb
 
2x
(Sb,As)
 
91-x
S
 
147
 (x = 0-17.5)

Other Names for Imhofite

Other Languages:
German:Imhofit
Russian:Имхофит
Spanish:Imhofita

Other Information

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

References for Imhofite

Reference List:American Mineralogist: 51: 531.

American Mineralogist: 54: 1498.

Neues Jahrbuch für Mineralogie, Abhandlungen: 165: 317-330.

Internet Links for Imhofite

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  • Raman and XRD data at RRUFF project
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  • Imhofite details from Handbook of Mineralogy (PDF)
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    Localities for Imhofite

    Hide Locality List
    The 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.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    China
     
    • Guizhou Province
      • Qianxi'nan Autonomous Prefecture
        • Xingren Co.
    		Tangfu Xiao (2001): PhD Thesis, University of Québec, Canda.
    Switzerland
     
    • Wallis (Valais)
      • Binn Valley
        • Im Feld (Imfeld; Feld; Fäld)
    		[MinRec 8:276, 8:279, 25:140]
    Mineral and/or Locality
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