Weilite (original) (raw)
A valid IMA mineral species
About WeiliteHide
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Lustre:
Waxy, Greasy, Dull
Name:
Named after René Weil (1901-1983), professor of mineralogy, University of Strasbourg (France).
Co-Type Localities:
ⓘ Gabe Gottes Mine, Sankt Jakob vein, Neuenberg, Sainte-Marie-aux-Mines, Colmar-Ribeauvillé, Haut-Rhin, Grand Est, France
ⓘ Wittichen, Schenkenzell, Rottweil, Freiburg Region, Baden-Württemberg, Germany
ⓘ Schneeberg, Erzgebirgskreis, Saxony, Germany
White powdery surface alteration of haidingerite.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:4259:4
1d909ffd-dffb-4658-9fc6-db60b62fb2b3
IMA Classification of WeiliteHide
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Type description reference:
Classification of WeiliteHide
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8.AD.10
8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
D : With only large cations
37.1.1.2
37 : ANHYDROUS ACID PHOSPHATES, ARSENATES AND VANADATES
1 : Miscellaneous
20.2.5
20 : Arsenates (also arsenates with phosphate, but without other anions)
2 : Arsenates of Be, Mg, Ca or Ba
Mineral SymbolsHide
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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Wei | 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 WeiliteHide
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Comment:
may be affected by underlying mineral
Comment:
Fine-grained natures prevents measurement.
Fracture:
Irregular/Uneven
Density:
3.48 g/cm3 (Measured) 3.45 g/cm3 (Calculated)
Optical Data of WeiliteHide
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RI values:
_n_α = 1.644 _n_γ = 1.688
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δ = 0.044
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Dispersion:
relatively strong
Optical Extinction:
X ∧ {001} = 20°; Y ∧ {001} = 27°; Z ⊥ {001} = 34°.
Chemistry of WeiliteHide
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Crystallography of WeiliteHide
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Class (H-M):
1 - Pinacoidal
Cell Parameters:
a = 7.059 Å, b = 6.891 Å, c = 7.201 Å
α = 97.43°, β = 103.55°, γ = 87.75°
Ratio:
a:b:c = 1.024 : 1 : 1.045
Unit Cell V:
337.66 ų (Calculated from Unit Cell)
Comment:
AC (B) 26:403 (1970); also JCPDS 16-710 (synthetic)
Crystal StructureHide
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0009369 | Weilite | Ferraris G, Chiari G (1970) The crystal structure of CaHAsO4 (weilite) Acta Crystallographica B26 403-409 |  |
1970 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.55 Å | (60) |
| 3.48 Å | (50) |
| 3.43 Å | (100) |
| 3.22 Å | (50) |
| 3.05 Å | (100) |
| 2.79 Å | (70) |
| 2.60 Å | (50) |
| 2.29 Å | (60) |
Comments:
JCPDS 16-710 (synthyetic)
Geological EnvironmentHide
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Type Occurrence of WeiliteHide
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Co-Type Localities:
ⓘ Gabe Gottes Mine, Sankt Jakob vein, Neuenberg, Sainte-Marie-aux-Mines, Colmar-Ribeauvillé, Haut-Rhin, Grand Est, France
ⓘ Wittichen, Schenkenzell, Rottweil, Freiburg Region, Baden-Württemberg, Germany
ⓘ Schneeberg, Erzgebirgskreis, Saxony, Germany
General Appearance of Type Material:
Incrustrations or pseudomorphs after pharmacolite or haidingerite.
Place of Conservation of Type Material:
National School of Mines, Paris, France, 4073.
National Museum of Natural History, Washington, D.C., USA, R5543.
Geological Setting of Type Material:
Frequently post-mine and may be a coating on haidingerite or pharmacolite.
Associated Minerals at Type Locality:
Reference:
Herpin P., Pierrot R. (1963) La weilite, CaH(AsO4), un nouvel arseniate de calcium isomorphe de la monetite. Bulletin de la Société française de Minéralogie et de Cristallographie: 86: 368-372.
Synonyms of WeiliteHide
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Other Language Names for WeiliteHide
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Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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Fluorescence of WeiliteHide
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Other InformationHide
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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 WeiliteHide
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References for WeiliteHide
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Localities for WeiliteHide
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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
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- 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). 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 (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.