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Agardite-(La)

A valid IMA mineral species
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About Agardite-(La)Hide

Formula:
LaCu6(AsO4)3(OH)6 · 3H2O
Colour:
Grass-green to dull green, yellowish green to intense bluish green, rarely nearly colourless.
Lustre:
Sub-Vitreous, Resinous, Waxy
Hardness:
3 - 4
Specific Gravity:
3.65
Crystal System:
Hexagonal
Member of:
Name:
Named by Peter J. Modreski in 1983 for its relationship to the other agardite series minerals, and for the predominance of lanthanum as the predominant REE.

Unique IdentifiersHide

Mindat ID:
50
Long-form identifier:
mindat:1:1:50:1
GUID
(UUID V4):
12a52b4c-9ae7-41cc-b09e-f7f50c0b3fbc

IMA Classification of Agardite-(La)Hide

Classification of Agardite-(La)Hide

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
20.4.14

20 : Arsenates (also arsenates with phosphate, but without other anions)
4 : Arsenates of Group III metals (Al, rare earths)

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
Agr-LaIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of Agardite-(La)Hide

Sub-Vitreous, Resinous, Waxy
Transparency:
Transparent, Translucent
Colour:
Grass-green to dull green, yellowish green to intense bluish green, rarely nearly colourless.
Streak:
Greenish white
Hardness:
3 - 4 on Mohs scale
Tenacity:
Brittle
Density:
3.65(5) g/cm3 (Measured)    3.62(1) g/cm3 (Calculated)

Optical Data of Agardite-(La)Hide

Type:
Uniaxial (+)
RI values:
nω = 1.715(2) nε = 1.795(2)
Max Birefringence:
δ = 0.080
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Pleochroism:
Non-pleochroic

Chemistry of Agardite-(La)Hide

Mindat Formula:
LaCu6(AsO4)3(OH)6 · 3H2O

Crystallography of Agardite-(La)Hide

Crystal System:
Hexagonal
Class (H-M):
6/m - Dipyramidal
Space Group:
P63/m
Cell Parameters:
a = 13.586(4) Å, c = 5.931(5) Å
Ratio:
a:c = 1 : 0.437
Unit Cell V:
948.07 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Crystals acicular, prismatic, to 3 mm, in tufted groups, spherical rosettes.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
- Å()
Comments:
Presumably very similar to agardite-(Y).

Geological EnvironmentHide

Paragenetic Mode(s):
Geological Setting:
In small amounts in the oxidised zone of hydrothermal mineralised breccia and polymetallic mineral deposits (Red Cloud mines, New Mexico, USA).

Type Occurrence of Agardite-(La)Hide

Place of Conservation of Type Material:
Mineralogical State Collection "Reich der Kristalle", Munich, Germany, numbers MSM 22482, MSM 22497 (type).
National Museum of Natural History, Washington, D.C., USA, numbers 148987, 148988 (cotype).
Geological Setting of Type Material:
Fluorite mine
Associated Minerals at Type Locality:

Synonyms of Agardite-(La)Hide

Other Language Names for Agardite-(La)Hide

Simplified Chinese:砷镧铜石
Traditional Chinese:砷鑭銅石

Relationship of Agardite-(La) to other SpeciesHide

Member of:
Other Members of this group:
Agardite-(Ce)CeCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
Agardite-(Nd)NdCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
Agardite-(Y)YCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
CalciopetersiteCaCu6(PO4)2(PO3OH)(OH)6 · 3H2OHex. 6/m : P63/m
GoudeyiteAlCu6(AsO4)3(OH)6 · 3H2OHex.
MixiteBiCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
Petersite-(Ce)Cu6Ce(PO4)3(OH)6 · 3H2OHex. 6/m : P63/m
Petersite-(La)Cu6La(PO4)3(OH)6 · 3H2OHex. 6/m : P63/m
Petersite-(Y)(Y,Ce,Nd)Cu6(PO4)3(OH)6 · 3H2OHex.
Plumboagardite(Pb,REE,Ca)Cu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
ZálesíiteCaCu6(AsO4)2(AsO3OH)(OH)6 · 3H2OHex. 6/m : P63/m

Common AssociatesHide

Associated Minerals Based on Photo Data:
11 photos of Agardite-(La) associated with AdamiteZn2(AsO4)(OH)
8 photos of Agardite-(La) associated with MalachiteCu2(CO3)(OH)2
7 photos of Agardite-(La) associated with FluoriteCaF2
7 photos of Agardite-(La) associated with CornwalliteCu5(AsO4)2(OH)4
7 photos of Agardite-(La) associated with BayldonitePbCu3(AsO4)2(OH)2
6 photos of Agardite-(La) associated with ConichalciteCaCu(AsO4)(OH)
5 photos of Agardite-(La) associated with AzuriteCu3(CO3)2(OH)2
4 photos of Agardite-(La) associated with SmithsoniteZnCO3
4 photos of Agardite-(La) associated with DuftitePbCu(AsO4)(OH)
3 photos of Agardite-(La) associated with QuartzSiO2

Related Minerals - Strunz-mindat GroupingHide

8.DL.05FoggiteCaAl(PO4)(OH)2 · H2OOrth. mmm (2/m 2/m 2/m)
8.DL.10CyriloviteNaFe3+3(PO4)2(OH)4 · 2H2OTet. 4 2 2 : P41 21 2
8.DL.10Millisite(Na,K)CaAl6(PO4)4(OH)9 · 3H2OTet.
8.DL.10WarditeNaAl3(PO4)2(OH)4 · 2H2OTet. 4 2 2 : P41 21 2
8.DL.10FluorowarditeNaAl3(PO4)2F2(OH)2(H2O)2 Tet. 4 2 2 : P41 21 2
8.DL.15Agardite-(Nd)NdCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
8.DL.15Agardite-(Y)YCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
8.DL.15Agardite-(Ce)CeCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
8.DL.15Agardite-(Dy)(Dy,La)Cu6(AsO4)3(OH)6 · 3H2OHex.
8.DL.15GoudeyiteAlCu6(AsO4)3(OH)6 · 3H2OHex.
8.DL.15MixiteBiCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
8.DL.15Petersite-(Y)(Y,Ce,Nd)Cu6(PO4)3(OH)6 · 3H2OHex.
8.DL.15ZálesíiteCaCu6(AsO4)2(AsO3OH)(OH)6 · 3H2OHex. 6/m : P63/m
8.DL.15Plumboagardite(Pb,REE,Ca)Cu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
8.DL.15CalciopetersiteCaCu6(PO4)2(PO3OH)(OH)6 · 3H2OHex. 6/m : P63/m
8.DL.15Petersite-(Ce)Cu6Ce(PO4)3(OH)6 · 3H2OHex. 6/m : P63/m
8.DL.15Petersite-(La)Cu6La(PO4)3(OH)6 · 3H2OHex. 6/m : P63/m
8.DL.20CheremnykhitePb3Zn3(VO4)2(TeO6)Orth.
8.DL.20DugganitePb3Zn3(AsO4)2(TeO6)Trig. 3 2 : P3 2 1
8.DL.20KuksitePb3Zn3(PO4)2(TeO6)Trig. 3 2 : P3 2 1
8.DL.20WallkilldelliteCa2Mn2+3(AsO4)2(OH)4 · 9H2OHex.
8.DL.20Wallkilldellite-(Fe)(Ca,Cu)4Fe2+6(AsO4,SiO4)4(OH,O)8 · 18H2OHex.
8.DL.25AngastoniteCaMgAl2(PO4)2(OH)4 · 7H2OAmor.
8.DL.30LångbanshyttanitePb2Mn2Mg(AsO4)2(OH)4 · 6H2OTric. 1 : P1

Fluorescence of Agardite-(La)Hide

Not fluorescent

Other InformationHide

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-(La)Hide

References for Agardite-(La)Hide

Localities for Agardite-(La)Hide

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

- 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.
Australia
 
  • Queensland
    • Cloncurry Shire
      • Selwyn District
Sorrell (n.d.)
Austria
 
  • Carinthia
    • Sankt Veit an der Glan District
      • Frauenstein
        • Äußere Wimitz
Kolitsch et al. (2010)
Bulgaria
 
  • Sofia Province
    • Svoge Municipality
      • Osenovlag
Kunov +2 other references
France
 
  • Bourgogne-Franche-Comté
    • Territoire-de-Belfort
      • Belfort
        • Giromagny
Hohl: "Minéraux et Mines du Massif Vosgien" (Mulhouse)
  • Grand Est
    • Bas-Rhin
      • Sélestat-Erstein
        • Urbeis
N. Meisser2001 and 2002 Analysis
  • Occitanie
    • Aude
      • Limoux
        • Escouloubre
Queneau (n.d.)
    • Aveyron
      • Villefranche-de-Rouergue
        • Monteils
Favreau et al. (2010)
Queneau (n.d.)
        • Najac
Jean Claude Dol
    • Gard
      • Alès
        • Laval-Pradel
Queneau (n.d.)
    • Tarn-et-Garonne
      • Montauban
        • Castanet
Queneau (n.d.)
        • Laguépie
Queneau (n.d.)
    • Tarn
      • Castres
        • Rayssac
Queneau (n.d.)
Germany
 
  • Baden-Württemberg
    • Freiburg Region
      • Breisgau-Hochschwarzwald
        • Feldberg
in Table 2 locality erroneously written ... +2 other references
        • Münstertal
          • Belchen
Gröbner (2017)
      • Emmendingen
        • Gutach im Breisgau
          • Bleibach
Gröbner (2017)
      • Ortenaukreis
        • Gengenbach
          • Gengenbach
Gröbner (2017)
        • Oberwolfach
Mineralogical Society of America - ... +1 other reference
    • Karlsruhe Region
      • Freudenstadt
        • Bad Rippoldsau-Schapbach
Gröbner (2017)
        • Freudenstadt
Wittern (2001)
Gröbner (2017)
      • Rhein-Neckar-Kreis
        • Weinheim
          • Hohensachsen
            • Kohlbach
Belendorff (2021)
  • Lower Saxony
    • Goslar District
      • Braunlage
        • St Andreasberg
    • Oder valley
Weiß (1990)
  • Saxony-Anhalt
    • Harz
      • Wernigerode
        • Hasserode
Wilfried Ließmann und Joachim Gröbner (2020)
Greece
 
  • Attica
    • East Attica
      • Lavreotiki
        • Lavrion Mining District
          • Agios Konstantinos (Kamariza)
            • Kamariza Mines (Kamareza Mines)
Hanke (1998)
LAPIS 24 (7/8) +1 other reference
            • Mercati mines
62. +3 other references
Gröbner (2001)
          • Lophos
            • Agrileza mines
Italy
 
  • Sardinia
    • South Sardinia Province
      • Domusnovas
Anthony et al. (2000)
  • Trentino-Alto Adige (Trentino-South Tyrol)
    • Trento Province (Trentino)
      • Frassilongo
        • Roveda
Ferretti et al. (2018)
      • Novaledo
Rocchetti I. (2012)
      • Vignola-Falesina
SEM-EDS AMI UK Service
Japan
 
  • Mie Prefecture
    • Kumano City
      • Kiwa town
        • Ohgurusu
Nishio–Hamane et al. (2020)
Poland
 
  • Lower Silesian Voivodeship
    • Karkonosze County
      • Gmina Janowice Wielkie
SiudaR. et al. (La)
Spain
 
  • Catalonia
    • Tarragona
      • Baix Camp
        • Alforja
Abella i Creus (2018)
Switzerland
 
  • Ticino
    • Lugano
      • Alto Malcantone
        • Breno
Stalder et al. (1998)
UK
 
  • England
    • Cornwall
      • Hayle
        • Great Wheal Alfred (Alfred Consols)
Anthony et al. (2000)
      • St Hilary
Betterton (2000)
    • Cumbria
      • Allerdale
        • Caldbeck
          • Deer Hills
Anthony et al. (2000)
      • Eden
        • Mungrisdale
Anthony et al. (2000)
USA
 
  • California
    • San Benito County
      • San Benito Peak (San Benito Mountain)
www.mineralsocal.org
  • New Mexico
    • Hidalgo County
      • Peloncillo Mountains
        • San Simon Mining District
Michael C. Michayluk ("collected by Ray Demark who had them analyzed")
    • Lincoln County
      • Red Cloud District
        • Gallinas Mountains
Modresky (1983) +1 other reference
Modresky (1983) +1 other reference
 
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