Agardite-(Y) (original) (raw)
A valid IMA mineral species
About Agardite-(Y)Hide
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Formula:
YCu6(AsO4)3(OH)6 · 3H2O
Colour:
bluish green to yellow green
Lustre:
Sub-Vitreous, Resinous, Waxy
Specific Gravity:
3.61 - 3.72
Name:
Named by Jacques E. Dietrich, Marcel Orliac, and François Permingeat in 1969 for Jules Agard (November 21, 1916 Grenoble, France - February, 2003), geologist with the Bureau de Recherches Géologiques et Minières, Orléans, France.
This page provides mineralogical data about Agardite-(Y).
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:44:0
dc1d1964-6d4b-4e1f-9015-16f98c32c24a
IMA Classification of Agardite-(Y)Hide
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IMA Formula:
YCu2+6(AsO4)3(OH)6 · 3H2O
Classification of Agardite-(Y)Hide
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8.DL.15
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
L : With large and medium-sized cations, (OH, etc.):RO4 = 2:1
42.5.1.2
42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
5 : (AB)7(XO4)3Zq·xH2O
20.4.13
20 : Arsenates (also arsenates with phosphate, but without other anions)
4 : Arsenates of Group III metals (Al, rare earths)
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 |
|---|---|---|
| Agr-Y | 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 Agardite-(Y)Hide
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Sub-Vitreous, Resinous, Waxy
Transparency:
Transparent, Translucent
Colour:
Bluish green to yellow green
Density:
3.61 - 3.72 g/cm3 (Measured) 3.66 g/cm3 (Calculated)
Optical Data of Agardite-(Y)Hide
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RI values:
_n_ω = 1.701 - 1.723 _n_ε = 1.770 - 1.815
δ = 0.069
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Optical Extinction:
Parallel
Pleochroism:
Non-pleochroic
Chemistry of Agardite-(Y)Hide
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Mindat Formula:
YCu6(AsO4)3(OH)6 · 3H2O
Chemical AnalysisHide
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Crystallography of Agardite-(Y)Hide
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Class (H-M):
6/m - Dipyramidal
Cell Parameters:
a = 13.583 Å, c = 5.895 Å
Unit Cell V:
941.90 ų (Calculated from Unit Cell)
Morphology:
Crystals are acicular hexagonal prisms, elongated along [0001], a few mm long, may be stepped or hollow tubes; in radiating fibrous aggregates.
Crystal StructureHide
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0019941 | Agardite-(Y) | Morrison S M, Domanik K J, Origlieri M J, Downs R T (2013) Agardite-(Y), Cu2+6Y(AsO4)3(OH)6*3H2O Acta Crystallographica E69 i61-i62 |  |
2013 | Jote West mine, Pampa Larga Mining District, Copiapo, Chile | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 11.73 Å | (100) |
| 4.43 Å | (70) |
| 3.54 Å | (70) |
| 2.938 Å | (80) |
| 2.692 Å | (60) |
| 2.558 Å | (60) |
| 2.451 Å | (80) |
Comments:
All Agardites seem to be indistinguishable by XRD
Geological EnvironmentHide
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Geological Setting:
In the oxidation zone of some copper deposits.
Type Occurrence of Agardite-(Y)Hide
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Place of Conservation of Type Material:
Serv. Geol. Maroc, Rabat, Morocco;
National School of Mines, Paris, France;
The Natural History Museum, London, England, 1978,24.
Geological Setting of Type Material:
Oxidation zone of copper veins or deposits
Synonyms of Agardite-(Y)Hide
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Other Language Names for Agardite-(Y)Hide
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Simplified Chinese:砷钇铜石
Traditional Chinese:砷釔銅石
Relationship of Agardite-(Y) to other SpeciesHide
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Other Members of this group:
Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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Fluorescence of Agardite-(Y)Hide
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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 Agardite-(Y)Hide
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References for Agardite-(Y)Hide
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Localities for Agardite-(Y)Hide
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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.