Wallisite
A valid IMA mineral species
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About Wallisite
Formula:
(Cu,Ag)TlPbAs2S5
Colour:
Lead-gray
Lustre:
Metallic
Specific Gravity:
5.71 (Calculated)
Crystal System:
Triclinic
Name:
Named after its discovery locality, the Lengenbach quarry, Binntal, Wallis, Switzerland.
Type Locality:
Isostructural with:
Unique Identifiers
Mindat ID:
4236
Long-form identifier:
mindat:1:1:4236:5
Similar Names
| Wellsite | A variety of Phillipsite Subgroup | (K,Ba,Ca,K2)Al2Si6O16 · 6H2O |
IMA Classification of Wallisite
Approved
IMA Formula:
Cu1+Pb2+Tl1+As3+2S2-5
First published:
1965
Classification of Wallisite
2.GC.05
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
G : Sulfarsenites, sulfantimonites, sulfbismuthites
C : Poly-sulfarsenites
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
G : Sulfarsenites, sulfantimonites, sulfbismuthites
C : Poly-sulfarsenites
3.5.8.1
3 : SULFOSALTS
5 : 2.5 < ø < 3
3 : SULFOSALTS
5 : 2.5 < ø < 3
5.5.8
5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
5 : Sulpharsenites etc. of Tl
5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
5 : Sulpharsenites etc. of 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 for Standard |
|---|---|---|
| Wal | 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 Wallisite
Metallic
Transparency:
Opaque
Colour:
Lead-gray
Cleavage:
Distinct/Good
Pronounced on {001}
Pronounced on {001}
Density:
5.71 g/cm3 (Calculated)
Chemistry of Wallisite
Mindat Formula:
(Cu,Ag)TlPbAs2S5
Element Weights:
Crystallography of Wallisite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 7.98 Å, b = 8.97 Å, c = 7.76 Å
α = 106.11°, β = 114.48°, γ = 65.48°
α = 106.11°, β = 114.48°, γ = 65.48°
Ratio:
a:b:c = 0.89 : 1 : 0.865
Unit Cell V:
456.19 ų (Calculated from Unit Cell)
Z:
2
Crystal Structure
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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) |
|---|---|---|---|---|---|---|---|
| 0018394 | Wallisite | Boiocchi M, Callegari A (2003) Crystal structure refinement of a wallisite-hatchite solid solution Neues Jahrbuch fur Mineralogie, Monatshefte 2003 396-406 | 2003 | Binnatal, Switzerland | 0 | 293 | |
| 0010669 | Wallisite | Takeuchi Y, Ohmasa M (1968) The crystal structure of wallisite, PbTlCuAs2S5, the Cu analogue of hatchite PbTlAgAs2S5 Zeitschrift fur Kristallographie 127 349-365 |  | 1968 | Lengenbach quarry, Binnatal, Switzerland | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.339 Å | (100) |
| 2.834 Å | (50) |
| 2.879 Å | (30) |
| 2.667 Å | (30) |
| 4.555 Å | (25) |
| 4.233 Å | (25) |
| 2.985 Å | (25) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| High-? alteration and/or metamorphism | |
| 33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) |
Type Occurrence of Wallisite
Place of Conservation of Type Material:
Mineralogical-Petrographical Institute, University of Bern, Bern, Switzerland, L2533-63.
Associated Minerals at Type Locality:
Other Language Names for Wallisite
Relationship of Wallisite to other Species
Forms a series with:
Common Associates
Associations Based on Photo Data:
| 12 photos of Wallisite associated with Realgar | As4S4 |
| 5 photos of Wallisite associated with Sartorite | PbAs2S4 |
| 5 photos of Wallisite associated with Pararealgar | As4S4 |
| 5 photos of Wallisite associated with Dolomite | CaMg(CO3)2 |
| 5 photos of Wallisite associated with Hatchite | AgTlPbAs2S5 |
| 3 photos of Wallisite associated with Edenharterite | PbTlAs3S6 |
| 3 photos of Wallisite associated with Pyrite | FeS2 |
| 2 photos of Wallisite associated with Trechmannite | AgAsS2 |
| 1 photo of Wallisite associated with 'Oellacherite' | KAl2(AlSi3O10)(OH)2 |
Related Minerals - Strunz-mindat Grouping
| 2.GC.05 | Hatchite | AgTlPbAs2S5 |
| 2.GC.10 | Sinnerite | Cu6As4S9 |
| 2.GC.15 | Watanabeite | Cu4(As,Sb)2S5 |
| 2.GC.20 | Simonite | TlHgAs3S6 |
| 2.GC.25 | Quadratite | Ag(Cd,Pb)AsS3 |
| 2.GC.25 | Manganoquadratite | AgMnAsS3 |
| 2.GC.30 | Smithite | AgAsS2 |
| 2.GC.35 | Trechmannite | AgAsS2 |
| 2.GC.35 | Debattistiite | Ag9Hg0.5As6S12Te2 |
| 2.GC.40a | Aleksite | PbBi2Te2S2 |
| 2.GC.40d | Saddlebackite | Pb2Bi2Te2S3 |
| 2.GC.40c | Rucklidgeite | PbBi2Te4 |
| 2.GC.40 | Clogauite | PbBi4Te4S3 |
| 2.GC.40e | Babkinite | Pb2Bi2(S,Se)3 |
| 2.GC.40b | Kochkarite | PbBi4Te7 |
| 2.GC.40c | Poubaite | PbBi2(Se,Te,S)4 |
| 2.GC.45 | Tvalchrelidzeite | Hg3SbAsS3 |
| 2.GC.50 | Mutnovskite | Pb4As2S6ICl |
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 Wallisite
mindat.org URL:
https://www.mindat.org/min-4236.html
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References for Wallisite
Reference List:
Takéuchi, Y.; Ohmasa, M.; Nowacki, W. (1968) The crystal structure of wallisite, PbTlCuAs2S5, the Cu analogue of hatchite, PbTlAgAs2S5. Zeitschrift für Kristallographie, 127 (5-6). 349-365 doi:10.1524/zkri.1968.127.5-6.349
International Mineralogical Association (1971) International Mineralogical Association: Commission on New Minerals and Mineral Names. Mineralogical Magazine, 38 (293). 102-105 doi:10.1180/minmag.1971.038.293.14
Localities for Wallisite
Showing 1 localities.
symbol to view information about a locality.
The 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).
All localities listed without proper references should be considered as questionable.
Switzerland (TL) | |
| Nowacki (1965) +1 other reference |
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Lengenbach Quarry, Fäld, Binn, Goms, Valais, Switzerland