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Agardite-(Ce)

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Formula:
CeCu
 
6
(AsO
 
4
)
 
3
(OH)
 
6
· 3H
 
2
O
System:HexagonalColour:light green, yellowish ...
Lustre:Sub-Vitreous, Resinous, SilkyHardness:3 - 4
Member of:Mixite Group
Name:Named by Kurt Walenta and Thomas Theye in 2003 for its relationship to the other Agardite series species.


Mixite Group.

Visually similar to Creaseyite.

Classification of Agardite-(Ce)

IMA status:Approved 2003
Strunz 8th edition ID:7/D.53-60
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
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Type Occurrence of Agardite-(Ce)

Type Locality:Clara Mine, Rankach valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany

Physical Properties of Agardite-(Ce)

Lustre:Sub-Vitreous, Resinous, Silky
Diaphaneity (Transparency):Transparent, Translucent
Colour:light green, yellowish green
Streak:greenish white
Hardness (Mohs):3 - 4
Hardness Data:Measured
Tenacity:Brittle
Cleavage:None Observed
Fracture:Conchoidal
Density (measured):3.7 g/cm3
Density (calculated):3.775 g/cm3

Crystallography of Agardite-(Ce)

Crystal System:Hexagonal
Class (H-M):6/m - Dipyramidal
Space Group:P63/m
Space Group Setting:P63/m
Cell Parameters:a = 13.59Å, c = 5.89Å
Ratio:a:c = 1 : 0.433
Unit Cell Volume:V 942.1 ų
Z:2

Optical Data of Agardite-(Ce)

Type:Uniaxial (+)
RI values: nω = 1.725 nε = 1.810
Maximum Birefringence:δ = 0.085

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High

Chemical Properties of Agardite-(Ce)

Formula:
CeCu
 
6
(AsO
 
4
)
 
3
(OH)
 
6
· 3H
 
2
O
Simplified for copy/paste:CeCu6(AsO4)3(OH)6·3H2O
Essential elements:As, Ce, Cu, H, O
All elements listed in formula:As, Ce, Cu, H, O

Relationship of Agardite-(Ce) to other Species

Member of:Mixite Group
Other Members of Group:

- +
Agardite-(Dy)
(Dy,La)Cu
 
6
(AsO
 
4
)
 
3
(OH)
 
6
· 3H
 
2
O
Agardite-(La)
(La,Ce)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-(Ce)
Cu
 
6
Ce(PO
 
4
)
 
3
(OH)
 
6
·3H
 
2
O
Petersite-(Y)
(Y,Ce,Nd)Cu
 
6
(PO
 
4
)
 
3
(OH)
 
6
· 3H
 
2
O
Plumboagardite
(Pb,REE,Ca)Cu
 
6
(AsO
 
4
)
 
2
(HAsO
 
4
,AsO
 
4
)(OH)
 
6
· 3H
 
2
O
Zálesíite
(Ca,Y)Cu
 
6
(AsO
 
4
)
 
2
(HAsO
 
4
,AsO
 
4
)(OH)
 
6
· 3H
 
2
O
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)
 
4
· 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-(La)
(La,Ce)Cu
 
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

Other Names for Agardite-(Ce)

Synonyms:
Chlorotile-(Ce)IMA2003-030
Other Languages:
Czech:Agardit-(Ce)
German:Agardit-(Ce)
Italian:Agardite-(Ce)
Latvian:Agardīts-(Ce)
Russian:Агардит-(Ce)
Simplified Chinese:砷铈铜石
Traditional Chinese:砷鈰銅石

Other Information

Fluorescence in UV light:Not fluorescent
Special Storage/
Display Requirements from:
Tin stope,..., Pershing Co., Nevada, USABe careful when cleaning in water ! Agardite fibers will clump.
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-(Ce)

Reference List:

- +
Walenta, K. and Theye, T. (2004) Agardit-(Ce) von der Grube Clara im mittleren Schwarzwald. Aufschluss 55, 17-23. (in German)

Lapis (1984) 1: 22-37

Best Localities for Agardite-(Ce)

Best of Species:Agardite-(Ce)

Internet Links for Agardite-(Ce)

Search Engines:
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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Mineral Dealers:
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  • Agardite-(Ce) specimens for sale - minfind.com
  • Localities for Agardite-(Ce)

    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.
    (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.
    Australia
     
    • New South Wales
      • Yancowinna Co.
    No reference listed
    • Western Australia
      • East Pilbara Shire
        • Rudall River District
    Downes, P. J., Hope, M., Bevan, A. W. R. and Henry, D. A. (2006): Chalcocite and associated secondary minerals from the Telfer gold mine, Western Australia. Austral. J. Mineral. 12, 25-42.
    Austria
     
    • Salzburg
      • Hohe Tauern
        • Gastein valley
          • Naßfeld valley
            • Kreuzkogel massif
              • Radhausberg
    Kolitsch, U. (2014): 1876) Agardit-(Ce), Agardit-(Nd), Plumboagardit(?), Pseudomalachit und Zalesiit(?) vom Kielbreinbau, Radhausberg-Südseite, Gasteinertal, Salzburg. P. 112 in Niedermayr, G. et al. (2014): Neue Mineralfunde aus Österreich LXIII. Carinthia II, 204./124., 65-146. [sample mix-up by finder]
    • Styria
      • Fischbacher Alpen
        • Rettenegg
          • Prinzkogel (Prinzenkogel)
            • Prinzkogel mines
              • Southern District
    Jakely, D. et al. (2008)
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Central Bohemia Region
        • Příbram
          • Vrančice
    Sejkora, J., Toegel, V., Pauliš, P.: Agardit-(Ce) ze supergenní zóny ložiska Vrančice u Příbrami (Česká republika). Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 2008, vol. 16, 2, 217-220.
    - Sejkora, J., Toegel, V., Pauliš, P.: Agardit-(Ce) ze supergenní zóny ložiska Vrančice u Příbrami (Česká republika). Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 2008, vol. 16, 2, 217-220.
    France
     
    • Franche-Comté
      • Territoire-de-Belfort
    U. Kolitsch (1997): Neufunde von Mineralien aus einigen Vorkommen der Vogesen, Frankreich: Giromagny, Auxelles-Haut und Kruth 1. Aufschluss 48 (4), 243-256.
    • Lorraine
      • Vosges
        • Val-d'Ajol
    Favreau G., Iltis A. (2000), Données complémentaires sur les minéraux du Val d'Ajol (Vosges), Le Cahier des Micromonteurs, n°1, pp: 39-54
    • Midi-Pyrénées
      • Aveyron
        • Lunel
        • Monteils
    Georges Favreau - Favreau G., Eytier J-R., Eytier C. (2010), Les minéraux de la mine de Falgayrolles (Aveyron), Le Cahier des Micromonteurs, n°109
    Germany
     
    • Baden-Württemberg
      • Black Forest
        • Calw
    Walenta, K. (1992): "Die Mineralien des Schwarzwaldes", Weise (Munich).
        • Schenkenzell
          • Wittichen
            • Burgfelsen
    K. Walenta: "Die Mineralien des Schwarzwaldes", Weise (Munich), 1992
        • Wolfach
          • Oberwolfach
            • Rankach valley
    Walenta, K. & Theye, T. (2004): Agardit-(Ce) von der Grube Clara im mittleren Schwarzwald. Aufschluss 55, 17-23.
    • Lower Saxony
      • Harz
        • Bad Lauterberg
    Gröbner, J. & Kloss, D. (2010): Neufunde von der Grube Wolkenhügel bei Bad Lauterberg im Harz. Lapis 35 (1), 39-41; 62.
        • Clausthal-Zellerfeld
          • Bockswies veins
            • Oberschulenberg
    No reference listed
    • Saxony
      • Erzgebirge
        • Niederschlag-Bärenstein District
          • Bärenstein
            • Niederschlag
    Lapis, 19 (4), 13-22+50.
    Greece
     
    • Attikí Prefecture (Attica; Attika)
      • Lavrion District (Laurion; Laurium)
        • 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)
    No reference listed
              • Hilarion area
    No reference listed
    No reference listed
    Italy
     
    • Sardinia
      • Carbonia-Iglesias Province
        • Fluminimaggiore
    Stara, P., Rizzo, R., Tanca, G. A. (1996): Iglesiente – Arburese, Miniere e Minerali. Associazioni e Gruppi Mineralogici Italiani Ed., 238 pp.
    Giovanni Fraccaro collection
    • Trentino-Alto Adige
      • Trento Province
        • Valsugana
          • Vignola-Falesina
    Paolo Gasparetto, Erica Bittarello, Andrea Canal, Lara Casagrande, Marco E. Ciriotti, Bruno Fassina, Paolo Ferretti, Sergio Pegoraro, Fabio Tosato, Paolo Zammatteo (2014): I lavori minerari del Rio Ricet, Vignola, Falesina, Trento. Micro, 12, 50-123.
    • Tuscany
      • Livorno Province
        • Campiglia Marittima
    Senesi, F. & Sabelli, C. (1999): Gli arseniati degli antichi scavi di Valle S. Caterina (Campiglia Marittima). Rivista Mineralogica Italiana, 23(1), 51-55.
    Morocco
     
    • Souss-Massa-Draâ Region
      • Ouarzazate Province
        • Tazenakht
          • Bou Azer District (Bou Azzer District)
            • Taghouni
    T. Witzke, U. Kolitsch, W. Krause, A. Wiechowski, O. Medenbach, A. R. Kampf, I. M. Steele and G. Favreau (2006): Guanacoite, Cu2Mg2(Mg0.5Cu0.5)(OH)4(H2O)4(AsO4)2, a new arsenate mineral species from the El Guanaco Mine, near Taltal, Chile: Description and crystal structure. Eur. J. Mineral. (in press).
    Namibia
     
    • Otjikoto Region (Oshikoto)
      • Tsumeb
    Gebhard, G. (1999): Tsumeb II. A Unique Mineral Locality. GG Publishing, Grossenseifen, Germany
    Russia
     
    • Urals Region
      • Southern Urals
        • Chelyabinsk Oblast'
          • Karabash (Karabasch)
            • Soimon Valley
    Vladimir Yu. Karpenko data
    UK
     
    • England
      • Cornwall
        • Mount's Bay District
          • St Hilary
    Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
        • St Agnes District
          • St Agnes
    Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
        • St Erth - Gwithian Area
          • Hayle
            • Great Wheal Alfred (Alfred Consols)
    [Golley & Williams, 1995, 2 - "Cornish Mineral Reference Manual"]
    USA
     
    • Nevada
      • Pershing Co.
        • Antelope District
          • Majuba Hill Mine (Majuba Mine; Mylar Mine; Tin Mine; Nevada Bureau of Mines and Geology sample sites 2844 & 2846)
    Natural History Museum Vienna collection; Jensen, M. (1993): Update on the mineralogy of the Majuba Hill mine, Pershing County. Mineralogical Record. 24, 171-180.
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