Agardite-(Y)
A valid IMA mineral species
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About Agardite-(Y)
Formula:
YCu6(AsO4)3(OH)6 · 3H2O
Colour:
bluish green to yellow green
Lustre:
Sub-Vitreous, Resinous, Waxy
Hardness:
3 - 4
Specific Gravity:
3.61 - 3.72
Crystal System:
Hexagonal
Member of:
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 Identifiers
IMA Classification of Agardite-(Y)
Classification of Agardite-(Y)
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
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
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)
20 : Arsenates (also arsenates with phosphate, but without other anions)
4 : Arsenates of Group III metals (Al, rare earths)
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 |
---|---|---|
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)
Sub-Vitreous, Resinous, Waxy
Transparency:
Transparent, Translucent
Colour:
bluish green to yellow green
Streak:
greenish white
Hardness:
3 - 4 on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Density:
3.61 - 3.72 g/cm3 (Measured) 3.66 g/cm3 (Calculated)
Optical Data of Agardite-(Y)
Type:
Uniaxial (+)
RI values:
nω = 1.701 - 1.723 nε = 1.770 - 1.815
Birefringence:
0.075
Max Birefringence:
δ = 0.069
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
High
Optical Extinction:
Parallel
Pleochroism:
Non-pleochroic
Chemistry of Agardite-(Y)
Mindat Formula:
YCu6(AsO4)3(OH)6 · 3H2O
Chemical Analysis
Oxide wt%:
1 | |
---|---|
Oxygen | 31.18 % |
Silicon | 1.15 % |
Calcium | 1.45 % |
Copper | 38.87 % |
Arsenic | 22.84 % |
Ytrium | 4.51 % |
Total: | 100 % |
Sample references:
ID | Locality | Reference | Notes |
---|---|---|---|
1 | Weiße Grube, Imsbach, Winnweiler, Donnersbergkreis, Rhineland-Palatinate, Germany |
Crystallography of Agardite-(Y)
Crystal System:
Hexagonal
Class (H-M):
6/m - Dipyramidal
Space Group:
P63/m
Setting:
P63/m
Cell Parameters:
a = 13.583 Å, c = 5.895 Å
Ratio:
a:c = 1 : 0.434
Unit Cell V:
941.90 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Crystals are acicular hexagonal prisms, elongated along [0001], a few mm long, may be stepped or hollow tubes; in radiating fibrous aggregates.
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) |
---|---|---|---|---|---|---|---|
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 Diffraction
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 Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 7: Great Oxidation Event | <2.4 |
47a : [Near-surface hydration of prior minerals] | |
47d : [Arsenates, antimonates, selenates, bismuthinates] |
Geological Setting:
In the oxidation zone of some copper deposits.
Type Occurrence of Agardite-(Y)
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.
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)
Agardite (in part)
Other Language Names for Agardite-(Y)
Relationship of Agardite-(Y) to other Species
Member of:
Other Members of this group:
Agardite-(Ce) | CeCu6(AsO4)3(OH)6 · 3H2O | Hex. 6/m : P63/m |
Agardite-(La) | LaCu6(AsO4)3(OH)6 · 3H2O | Hex. 6/m : P63/m |
Agardite-(Nd) | NdCu6(AsO4)3(OH)6 · 3H2O | Hex. 6/m : P63/m |
Calciopetersite | CaCu6(PO4)2(PO3OH)(OH)6 · 3H2O | Hex. 6/m : P63/m |
Goudeyite | AlCu6(AsO4)3(OH)6 · 3H2O | Hex. |
Mixite | BiCu6(AsO4)3(OH)6 · 3H2O | Hex. 6/m : P63/m |
Petersite-(Ce) | Cu6Ce(PO4)3(OH)6 · 3H2O | Hex. 6/m : P63/m |
Petersite-(La) | Cu6La(PO4)3(OH)6 · 3H2O | Hex. 6/m : P63/m |
Petersite-(Y) | (Y,Ce,Nd)Cu6(PO4)3(OH)6 · 3H2O | Hex. |
Plumboagardite | (Pb,REE,Ca)Cu6(AsO4)3(OH)6 · 3H2O | Hex. 6/m : P63/m |
Zálesíite | CaCu6(AsO4)2(AsO3OH)(OH)6 · 3H2O | Hex. 6/m : P63/m |
Common Associates
Associated Minerals Based on Photo Data:
29 photos of Agardite-(Y) associated with Malachite | Cu2(CO3)(OH)2 |
28 photos of Agardite-(Y) associated with Azurite | Cu3(CO3)2(OH)2 |
15 photos of Agardite-(Y) associated with Conichalcite | CaCu(AsO4)(OH) |
11 photos of Agardite-(Y) associated with Quartz | SiO2 |
10 photos of Agardite-(Y) associated with Cornwallite | Cu5(AsO4)2(OH)4 |
10 photos of Agardite-(Y) associated with Olivenite | Cu2(AsO4)(OH) |
7 photos of Agardite-(Y) associated with Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
6 photos of Agardite-(Y) associated with Bayldonite | PbCu3(AsO4)2(OH)2 |
5 photos of Agardite-(Y) associated with Wulfenite | Pb(MoO4) |
5 photos of Agardite-(Y) associated with Heterogenite | Co3+O(OH) |
Related Minerals - Strunz-mindat Grouping
8.DL.05 | Foggite | CaAl(PO4)(OH)2 · H2O |
8.DL.10 | Cyrilovite | NaFe3+3(PO4)2(OH)4 · 2H2O |
8.DL.10 | Millisite | (Na,K)CaAl6(PO4)4(OH)9 · 3H2O |
8.DL.10 | Wardite | NaAl3(PO4)2(OH)4 · 2H2O |
8.DL.10 | Fluorowardite | NaAl3(PO4)2F2(OH)2(H2O)2 |
8.DL.15 | Agardite-(Nd) | NdCu6(AsO4)3(OH)6 · 3H2O |
8.DL.15 | Agardite-(Ce) | CeCu6(AsO4)3(OH)6 · 3H2O |
8.DL.15 | Agardite-(Dy) | (Dy,La)Cu6(AsO4)3(OH)6 · 3H2O |
8.DL.15 | Agardite-(La) | LaCu6(AsO4)3(OH)6 · 3H2O |
8.DL.15 | Goudeyite | AlCu6(AsO4)3(OH)6 · 3H2O |
8.DL.15 | Mixite | BiCu6(AsO4)3(OH)6 · 3H2O |
8.DL.15 | Petersite-(Y) | (Y,Ce,Nd)Cu6(PO4)3(OH)6 · 3H2O |
8.DL.15 | Zálesíite | CaCu6(AsO4)2(AsO3OH)(OH)6 · 3H2O |
8.DL.15 | Plumboagardite | (Pb,REE,Ca)Cu6(AsO4)3(OH)6 · 3H2O |
8.DL.15 | Calciopetersite | CaCu6(PO4)2(PO3OH)(OH)6 · 3H2O |
8.DL.15 | Petersite-(Ce) | Cu6Ce(PO4)3(OH)6 · 3H2O |
8.DL.15 | Petersite-(La) | Cu6La(PO4)3(OH)6 · 3H2O |
8.DL.20 | Cheremnykhite | Pb3Zn3(VO4)2(TeO6) |
8.DL.20 | Dugganite | Pb3Zn3(AsO4)2(TeO6) |
8.DL.20 | Kuksite | Pb3Zn3(PO4)2(TeO6) |
8.DL.20 | Wallkilldellite | Ca2Mn2+3(AsO4)2(OH)4 · 9H2O |
8.DL.20 | Wallkilldellite-(Fe) | (Ca,Cu)4Fe2+6(AsO4,SiO4)4(OH,O)8 · 18H2O |
8.DL.25 | Angastonite | CaMgAl2(PO4)2(OH)4 · 7H2O |
8.DL.30 | Långbanshyttanite | Pb2Mn2Mg(AsO4)2(OH)4 · 6H2O |
Fluorescence of Agardite-(Y)
Not fluorescent
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 Agardite-(Y)
mindat.org URL:
https://www.mindat.org/min-44.html
Please feel free to link to this page.
Please feel free to link to this page.
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External Links:
Mineral Dealers:
References for Agardite-(Y)
Reference List:
Dietrich, Jacques E., Orliac, Marcel, Permingeat, François (1969) L'agardite, une nouvelle espèce minérale et le problème du chlorotile. Bulletin de Minéralogie, 92 (5) 420-434 doi:10.3406/bulmi.1969.6392
Localities for Agardite-(Y)
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).
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.
All localities listed without proper references should be considered as questionable.
Australia | |
| Leverett et al. (2005) |
| Birch et al. (1997) |
| Birch et al. (1997) |
Elliott et al. (2015) | |
| Kolitsch et al. (1999) |
| A.G. Christy (2004) +1 other reference |
| Downes et al. (2006) |
Bulgaria | |
| Kunov +2 other references |
Chile | |
| Samples analysed by Dr. Jochen Schlüter (Hamburg University) |
| Luigi Matei |
Czech Republic | |
| Plášil J. et al. (Giant) +1 other reference |
| Lapis 2002 (7/8) |
| Plášil et al. (2014) |
DR Congo | |
| Deliens (1989) +2 other references |
Europe | |
| Sejkora J. et al. (Y) |
France | |
| Coueille (1988) |
| Vincent Bourgoin - Association Jean ... |
| Boisson J.-M. et al. (2023) +1 other reference |
| Favreau et al. (2010) |
| Lheur C. et al. (2002) |
| Jean-Marie Claude collection +2 other references |
Trouvaille et collection personnelle ... | |
Germany | |
| Steen (2005) |
| Walenta (1992) |
| Steen (2005) |
| |
| Lapis 1985 (11) |
| Mineralogical Society of America - ... +1 other reference |
| Walenta (1992) |
| ex-Petitjean collection |
| Wittern (2001) |
| Aufschluss 37 |
| Lapis 1988 (1) |
Heckmann et al. (1990) | |
| Johannes Markus Henrich +2 other references |
| Joan Rosell (2019) |
| Mineralogical Society of America - ... |
| Wittern (2001) |
Greece | |
| Giester et al. (2014) |
| |
Italy | |
| Palenzona et al. (1994) +1 other reference |
| Pezzotta et al. (1999) +1 other reference |
| Nazareno La Manna collection +1 other reference |
| Piccoli et al. (2007) +1 other reference |
Piccoli et al. (2007) +1 other reference | |
| Guastoni A. et al. (2006) |
| Piccoli et al. (2007) |
| Sergio Varvello collection |
| Conti-Vecchi et al. (1991) +1 other reference |
Stara et al. (1996) | |
| |
| rruff.geo.arizona.edu (2006) |
Stara et al. (1996) | |
| I. Campostrini - Unimi (SEM-EDS) |
Stara et al. (1996) | |
| Stara et al. (1993) |
| Mattioli et al. (2009) |
| Maiello et al. (2009) +1 other reference |
| Vecchi et al. (2013) |
| Bortolozzi et al. (2013) |
| EDX + XRD analysis by Gunter Blass |
Paolo Gasparetto et al. (2014) | |
Japan | |
| ex-Okamoto collection (2015) |
| Anthony et al. (2000) |
| Hiroshi Kunieda et al. (2011) |
| The Mineral Species of Japan (5th ed) |
The Mineral Species of Japan (5th ed) | |
Mexico | |
| Collected by and in the collection of ... |
Mongolia | |
| Pavel.M. Kartashov (n.d.) +1 other reference |
Morocco | |
| Georges Favreau collection |
| American Mineralogist 55:1448 +1 other reference |
Dietrich et al. (1969) | |
| Sergio Varvello collection |
| Georges Favreau collection |
Norway | |
| Husdal (2021) |
Russia | |
| Kasatkin et al. (2014) |
Spain | |
| Dr. Joan Viñals |
| Anthony et al. (2000) |
| www.foro-minerales.com (n.d.) |
| Joan Rosell - rosellminerals.com |
| Abella i Creus (2018) |
| Tanago et al. (2012) |
| Collection of the Geominero Museum of ... +1 other reference |
Switzerland | |
| Stalder et al. (1998) |
| Stalder et al. (1998) |
| |
| Meisser (2012) |
UK | |
| Anthony et al. (2000) |
| |
| S.Rust Collection |
USA | |
| Van Nostrand Reinholt Press: 323. +1 other reference |
| R. Housley (2008) |
| [Mineralien Welt 1/93:44] |
| Hayes et al. (2008) |
| Castor et al. (2004) |
Weissman collection - visual ID based ... | |
| Castor et al. (2004) |
| Castor et al. (2004) +1 other reference |
| Holmwood (2023) |
Jensen (1993) | |
| R&M 77:5 p298-305 +1 other reference |
Twenty-fourth Annual New Mexico Mineral ... | |
R. D. Green photo +1 other reference | |
R&M 77:5 p298-305 | |
| Northrop et al. (1996) |
| Mineralogical Society of America - ... |
| Collected by and analyzed by Chris ... |
| Micro Probe Volume VI Number 8 +1 other reference |
Quick NavTopAbout Agardite-(Y)Unique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Chemical AnalysisCrystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsCommon AssociatesStrunz-MindatFluorescence Other InformationInternet Links References Localities Locality List
Clara Mine, Oberwolfach, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany