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Agardite-(La)

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Big Photo

Serpieri Mine, Kamariza Mines (Kamareza Mines), Agios Konstantinos [St Constantine] (Kamariza), Lavrion District Mines, Lavrion (Laurion; Laurium) District, Attikí (Attica; Attika) Prefecture, Greece
© O. Dziallas

Show Agardite-(La) Photos (59)



Formula:
(La,Ce)Cu
 
6
(AsO
 
4
)
 
3
(OH)
 
6
 · 3H
 
2
O
System:HexagonalColour:Grass-green to dull ...
Lustre:Sub-Vitreous, Resinous, WaxyHardness:3 - 4
Member of:Mixite Group
Name:Named by Peter J. Modreski in 1983 for its relationship to the other Agardite series minerals.


Mixite Group.

Classification of Agardite-(La)

IMA status:Approved 1980
Strunz 8th edition ID:7/D.53-50
Nickel-Strunz 10th (pending) edition ID: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
Hey's CIM Ref.:20.4.14

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

Type Locality:Dorothea Mine, Freudenstadt, Black Forest, Baden-Württemberg, Germany
Place of Conservation of Type Material:National Museum of Natural History, Washington, D.C., USA, 148987, 148988.
Year of Discovery:1980
Geological Setting of type material:Fluorite mine
Associated Minerals at type locality:
QuartzFluoriteBastnäsite-(Ce)Baryte

Occurrences of Agardite-(La)

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

Physical Properties of Agardite-(La)

Lustre:Sub-Vitreous, Resinous, Waxy
Diaphaneity (Transparency):Transparent, Translucent
Colour:Grass-green to dull green, yellowish green to intense bluish green, rarely nearly colourless.
Streak:greenish white
Hardness (Mohs):3 - 4
Tenacity:Brittle
Density (measured):3.65 g/cm3
Density (calculated):3.62 g/cm3

Crystallography of Agardite-(La)

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

Optical Data of Agardite-(La)

Type:Uniaxial
Pleochroism:Non-pleochroic

Chemical Properties of Agardite-(La)

Formula:
(La,Ce)Cu
 
6
(AsO
 
4
)
 
3
(OH)
 
6
 · 3H
 
2
O
Essential elements:As, Cu, H, La, O
All elements listed in formula:As, Ce, Cu, H, La, O

Relationship of Agardite-(La) to other Species

Member of:Mixite Group
Other Members of Group:

- +
Agardite-(Ce)
CeCu
 
6
(AsO
 
4
)
 
3
(OH)
 
6
 · 3H
 
2
O
Agardite-(Dy)
(Dy,La)Cu
 
6
(AsO
 
4
)
 
3
(OH)
 
6
 · 3H
 
2
O
Agardite-(Nd)
NdCu
 
6
(AsO
 
4
)
 
3
(OH)
 
6
 · 3H
 
2
O
Agardite-(Y)
(Y,Ca)Cu
 
6
(AsO
 
4
)
 
2
(AsO
 
4
,HAsO
 
4
)(OH)
 
6
 · 3H
 
2
O
Calciopetersite
CaCu
 
6
(PO
 
4
)
 
2
(HPO
 
4
)(OH)
 
6
 · 3H
 
2
O
Goudeyite
(Al,Y)Cu
 
6
(AsO
 
4
)
 
3
(OH)
 
6
 · 3H
 
2
O
Mixite
BiCu
 
6
(AsO
 
4
)
 
3
(OH)
 
6
 · 3H
 
2
O
Petersite-(Y)
(Y,Ce,Nd)Cu
 
6
(PO
 
4
)
 
3
(OH)
 
6
 · 3H
 
2
O
Zálesíite
(Ca,Y)Cu
 
6
(AsO
 
4
)
 
2
(HAsO
 
4
,AsO
 
4
)(OH)
 
6
 · 3H
 
2
O
Common Associates:
ZincaluminiteWulfeniteVanadiniteSmithsoniteQuartz
MottramiteMimetiteMalachiteHydrozinciteGibbsite
FluoriteCuprian AdamiteConichalciteChrysocollaCerussite
CalciteBastnäsiteBaryteAzuriteAurichalcite
Related Minerals - Nickel-Strunz Grouping):

- +
8.DL.05Foggite
CaAl(PO
 
4
)(OH)
 
2
 · H
 
2
O
8.DL.10Cyrilovite
NaFe
3+
3
(PO
 
4
)
 
2
(OH)
 
2
 · 2H
 
2
O
8.DL.10Millisite
(Na,K)CaAl
 
6
(PO
 
4
)
 
4
(OH)
 
9
 · 3H
 
2
O
8.DL.10Wardite
NaAl
 
3
(PO
 
4
)
 
2
(OH)
 
4
 · 2H
 
2
O
8.DL.15Agardite-(Nd)
NdCu
 
6
(AsO
 
4
)
 
3
(OH)
 
6
 · 3H
 
2
O
8.DL.15Agardite-(Y)
(Y,Ca)Cu
 
6
(AsO
 
4
)
 
2
(AsO
 
4
,HAsO
 
4
)(OH)
 
6
 · 3H
 
2
O
8.DL.15Agardite-(Ce)
CeCu
 
6
(AsO
 
4
)
 
3
(OH)
 
6
 · 3H
 
2
O
8.DL.15Goudeyite
(Al,Y)Cu
 
6
(AsO
 
4
)
 
3
(OH)
 
6
 · 3H
 
2
O
8.DL.15Mixite
BiCu
 
6
(AsO
 
4
)
 
3
(OH)
 
6
 · 3H
 
2
O
8.DL.15Petersite-(Y)
(Y,Ce,Nd)Cu
 
6
(PO
 
4
)
 
3
(OH)
 
6
 · 3H
 
2
O
8.DL.15Zálesíite
(Ca,Y)Cu
 
6
(AsO
 
4
)
 
2
(HAsO
 
4
,AsO
 
4
)(OH)
 
6
 · 3H
 
2
O
8.DL.15Plumboagardite
(Pb,REE,Ca)Cu
 
6
(AsO
 
4
)
 
2
(HAsO
 
4
,AsO
 
4
)(OH)
 
6
 · 3H
 
2
O
8.DL.15Calciopetersite
CaCu
 
6
(PO
 
4
)
 
2
(HPO
 
4
)(OH)
 
6
 · 3H
 
2
O
8.DL.20Cheremnykhite
Pb
 
3
Zn
 
3
(VO
 
4
)
 
2
(TeO
 
6
)
8.DL.20Dugganite
Pb
 
3
Zn
 
3
(AsO
 
4
)
 
2
(TeO
 
6
)
8.DL.20Kuksite
Pb
 
3
Zn
 
3
(PO
 
4
)
 
2
(TeO
 
6
)
8.DL.20Wallkilldellite-(Mn)
Ca
 
2
Mn
2+
3
(AsO
 
4
)
 
2
(OH)
 
4
 · 9H
 
2
O
8.DL.20Wallkilldellite-(Fe)
(Ca,Cu)
 
4
Fe
2+
6
(AsO
 
4
,SiO
 
4
)
 
4
(OH,O)
 
8
 · 18H
 
2
O
8.DL.25Angastonite
CaMgAl
 
2
(PO
 
4
)
 
2
(OH)
 
4
 · 7H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
20.4.1Mansfieldite
AlAsO
 
4
 · 2H
 
2
O
20.4.2Bulachite
Al
 
2
(AsO
 
4
)(OH)
 
3
 · 3H
 
2
O
20.4.3Pharmacoalumite
KAl
 
4
(AsO
 
4
)
 
3
(OH)
 
4
 · 6.5H
 
2
O
20.4.4Luetheite
Cu
 
2
Al
 
2
(AsO
 
4
)
 
2
(OH)
 
4
20.4.5Arsenogoyazite
SrAl
 
3
(AsO
 
4
)
 
2
(OH)
 
5
 · H
 
2
O
20.4.6Arsenocrandallite
CaAl
 
3
(AsO
 
4
)
 
2
(OH)
 
5
 · H
 
2
O
20.4.7Arsenoflorencite-(Ce)
CeAl
 
3
(AsO
 
4
)
 
2
(OH)
 
6
20.4.8Arsenoflorencite-(La)
(La,Ce,Nd)(Al,Fe
3+
 
)
 
3
(AsO
 
4
,PO
 
4
)
 
2
(OH)
 
6
20.4.9Arsenoflorencite-(Nd)
NdAl
 
3
(AsO
 
4
)
 
2
(OH)
 
6
20.4.10Gerdtremmelite
(Zn,Fe)(Al,Fe)
 
2
(AsO
 
4
)(OH)
 
5
20.4.11Gasparite-(Ce)
(Ce,REE)(AsO
 
4
)
20.4.12Chernovite-(Y)
Y(AsO
 
4
)
20.4.13Agardite-(Y)
(Y,Ca)Cu
 
6
(AsO
 
4
)
 
2
(AsO
 
4
,HAsO
 
4
)(OH)
 
6
 · 3H
 
2
O
20.4.15Goudeyite
(Al,Y)Cu
 
6
(AsO
 
4
)
 
3
(OH)
 
6
 · 3H
 
2
O
20.4.16Retzian-(Ce)
Mn
2+
2
Ce(AsO
 
4
)(OH)
 
4
20.4.17Retzian-(La)
(Mn
2+
 
,Mg)
 
2
(La,Ce,Nd)(AsO
 
4
)(OH)
 
4
20.4.18Retzian-(Nd)
Mn
2+
2
(Nd,Ce,La)(AsO
 
4
)(OH)
 
4

Other Names for Agardite-(La)

Synonyms:
IMA1980-092
Other Languages:
German:Agardit-(La)
Russian:Агардит-(La)

Other Information

Fluorescence in UV light:Not fluorescent
Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Agardite-(La)

Reference List:

- +
Modresky, Peter J. (1983) Agardite-(La), a Chemically Complex Rare-Earth Arsenate from the Gallinas District, Lincoln Co., New Mexico. In Anthony, J. W., (editor), Oxidation Mineralogy of Base Metal Deposits, Fifth Joint Mineralogical Society of America - Friends of Mineralogy Symposium.

Fehr, T. & Hochleitner, R. (1984) Agardit-La. Ein neues Mineral von Lavrion, Griechenland. Lapis 9 (1), 22; 37. (in German).

American Mineralogist: 70: 871.

Best Localities for Agardite-(La)

Best of Species:Agardite-(La)

Internet Links for Agardite-(La)

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  • Raman and XRD data at RRUFF project
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  • Agardite-(La) details from Handbook of Mineralogy (PDF)
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    • Localities for Agardite-(La)

    The 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.
    Hide Locality List
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Austria
     
    • Carinthia
      • Gurktaler Alpen
        • St Veit an der Glan
          • Äußere Wimitz
    		Kolitsch, U., Blaß, G. & Auer, C. (2010): 1618) Bleihaltiger Agardit-(La) und Brookit von der Äußeren Wimitz, St. Veit an der Glan, Gurktaler Alpen. P. 203 in Niedermayr et al. (2010): Neue Mineralfunde aus Österreich LIX. Carinthia II, 200./120., 199-260.
    Bulgaria
     
    • Sofiya Oblast (Sofia Oblast)
    		Kunov, A. Y.; Nakov, R. A.; Stanchev, C. D. (2002): First agardite-(Y), -(Nd), -(La) find in Bulgaria. Neues Jahrbuch fuer Mineralogie, Monatshefte 2002, 107-116.
    France
     
    • Franche-Comté
      • Territoire-de-Belfort
        • Giromagny
    		Hohl: "Minéraux et Mines du Massif Vosgien", Editions du Rhin (Mulhouse), 1994
    • Midi-Pyrénées
      • Aveyron
        • Monteils
    		No reference listed
    Patrice Queneau Collection
        • Najac
    		Jean Claude Dol
    Germany
     
    • Baden-Württemberg
      • Black Forest
        • Freudenstadt
    		Wittern: "Mineralfundorte in Deutschland", Schweizerbart (Stuttgart), 2001
    • Lower Saxony
      • Harz
        • St Andreasberg District
          • Oder valley
    		Weiss: "Mineralfundstellen, Deutschland West", 1990
          • St Andreasberg
    		No reference listed
    Greece
     
    • Attikí (Attica; Attika) Prefecture
      • Lavrion (Laurion; Laurium) District
        • Lavrion District Mines
          • Agios Konstantinos [St Constantine] (Kamariza)
    		LAPIS 24 (7/8) 1999; Wendel, W. and Markl, G. (1999) Lavrion: Mineralogische Klassiker und Raritäten für Sammler. LAPIS 24 (7/8):34-52
            • Kamariza Mines (Kamareza Mines)
    		Elbin, K. & Wendel, W. (1996): Lavendulan aus Lavrion. Lapis, 21 (11), 42-43; 62. ; J. Gröbner und U. Kolitsch (2002): Neufunde von Laurion aus den Jahren 2001 und 2002. Aufschluss 53 (5-6), 363-371.
    GRÖBNER, J. (2001): Roter Skorodit und weitere ungewöhnliche Arsenate: Die Mineralien des Abbaus 132 der Grube Christiana, Lavrion/Griechenland. Lapis, 26 (11), 13-21.
              • Hilarion area
    		No reference listed
          • Sounion Area
            • Agia Varvara Mines (St Barbara Mines)
    Italy
     
    • Sardinia
      • Carbonia-Iglesias Province
        • Domusnovas
          • Oridda
    		Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 4, 2000
    Poland
     
    • Lower Silesia (Dolnośląskie)
      • Rudawy Janowickie Mts
        • Jelenia Góra District
    		SiudaR., K. Gal-Solymos, Kruszewski L., 2006: Agardite-(La)-duftite and scorodite-köttigite-like mineral paragenesis from supergenic zone of the Miedzianka deposit (Rudawy Janowickie Mts., Poland) – preliminary report. Mineralogia Polonica Special Papers, 29, 192-195
    Switzerland
     
    • Ticino (Tessin)
      • Malcantone
        • Alto Malcantone
          • Breno
    		Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Verlag Wepf & Co. (Basel), p. 24
    UK
     
    • England
      • Cornwall
        • Mount's Bay District
          • St Hilary
    		[UKJMM 20:7-37]
        • St Erth - Gwithian Area
          • Phillack
            • Great Wheal Alfred (Alfred Consols)
    		Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 4, 2000
      • Cumbria
        • North and Western Region (Cumberland)
          • Caldbeck Fells
            • Carrock Fell
    		Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 4, 2000
            • Deer Hills
    		Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 4, 2000
    USA
     
    • California
      • San Benito Co.
        • Diablo Range
          • New Idria District
            • San Benito River headwaters area
              • Dallas Gem Mine area
                • Santa Rita Peak
    		www.mineralsocal.org
    • New Mexico
      • Lincoln Co.
        • Red Cloud District
          • Gallinas Mts
    		Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 4, 2000
    Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols
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