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Wallisite

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Lengenbach Quarry, Im Feld (Imfeld; Feld; Fäld), Binn Valley, Wallis (Valais), Switzerland
© Stephan Wolfsried

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Formula:
(Cu,Ag)TlPbAs
 
2
S
 
5
System:TriclinicColour:Lead-gray
Name:Named after its discovery locality the Lengenbach quarry, Binntal, Wallis, Switzerland.
Isostructural with:Hatchite


Hatchite-Wallisite Series.

Classification of Wallisite

IMA status:Approved
Strunz 8th edition ID:2/E.12-60
Nickel-Strunz 10th (pending) edition ID:2.GC.05

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
G : Sulfarsenites, sulfantimonites, sulfbismuthites
C : Poly-sulfarsenites
Dana 8th edition ID:3.5.8.1

3 : SULFOSALTS
5 : 2.5 < ø < 3
Hey's CIM Ref.:5.5.8

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 Wallisite

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

Physical Properties of Wallisite

Lustre:Metallic
Diaphaneity (Transparency):Opaque
Colour:Lead-gray

Crystallography of Wallisite

Crystal System:Triclinic
Cell Parameters:a = 7.98Å, b = 8.97Å, c = 7.76Å
α = 106.11°, β = 114.48°, γ = 65.48°
Ratio:a:b:c = 0.89 : 1 : 0.865
Unit Cell Volume:V 456.19 ų (Calculated from Unit Cell)

Chemical Properties of Wallisite

Formula:
(Cu,Ag)TlPbAs
 
2
S
 
5
Essential elements:As, Cu, Pb, S, Tl
All elements listed in formula:Ag, As, Cu, Pb, S, Tl

Relationship of Wallisite to other Species

Series:Forms a series with Hatchite (see here)
Related Minerals - Nickel-Strunz Grouping):

- +
2.GC.05Hatchite
AgTlPbAs
 
2
S
 
5
2.GC.10Sinnerite
Cu
 
6
As
 
4
S
 
9
2.GC.15Watanabeite
Cu
 
4
(As,Sb)
 
2
S
 
5
2.GC.20Simonite
TlHgAs
 
3
S
 
6
2.GC.25Quadratite
Ag(Cd,Pb)AsS
 
3
2.GC.30Smithite
AgAsS
 
2
2.GC.35Trechmannite
AgAsS
 
2
2.GC.40aAleksite
PbBi
 
2
Te
 
2
S
 
2
2.GC.40bKochkarite
PbBi
 
4
Te
 
7
2.GC.40cPoubaite
PbBi
 
2
(Se,Te,S)
 
4
2.GC.40cRucklidgeite
(Bi,Pb)
 
3
Te
 
4
2.GC.40eBabkinite
Pb
 
2
Bi
 
2
(S,Se)
 
3
2.GC.40dSaddlebackite
Pb
 
2
Bi
 
2
Te
 
2
S
 
3
2.GC.45Tvalchrelidzeite
Hg
 
3
SbAsS
 
3
2.GC.50Mutnovskite
Pb
 
4
As
 
2
S
 
6
ICl
Related Minerals - Hey's Index Grouping:

- +
5.5.1Lorándite
TlAsS
 
2
5.5.2Ellisite
Tl
 
3
AsS
 
3
5.5.3Imhofite
Tl
 
6
CuAs
 
16
S
 
40
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
5.5.9Bernardite
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 Wallisite

Other Languages:
German:Wallisit
Russian:Валлисит
Spanish:Wallisita

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 Wallisite

Reference List:Eclogae Geol. Helv. (1965), 58, 403-406.

Zeitschrift für Kristallographie: 127: 349-365.

American Mineralogist (1966): 51: 532.

American Mineralogist (1969): 54: 1497.

Internet Links for Wallisite

Search Engines:
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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Wallisite in the Natural History Museum (London) online catalogue
  • Wallisite details from Handbook of Mineralogy (PDF)
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    Localities for Wallisite

    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.
    Switzerland
     
    • Wallis (Valais)
      • Binn Valley
        • Im Feld (Imfeld; Feld; Fäld)
    		Eclogae Geol.Helv.(1965) 58, 403-406
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 4th Nov 2009 16:50:54