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Agardite-(Ce)

Big Photo

Clara Mine, Rankach valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany
© D. Schläfli

Show Agardite-(Ce) Photos (55)
Formula:
CeCu
 
6
[(OH)
 
6
|(AsO
 
4
)
 
3
] · 3H
 
2
O
System:HexagonalColour:light green, yellowish ...
Lustre:Vitreous, SilkyHardness:3 - 4
Name:For its relationship to the other Agardite series species.


Mixite Group.

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:Vitreous, Silky
Diaphaneity (Transparency):Transparent, Translucent
Colour:light green, yellowish green
Streak:greenish white
Hardness (Mohs):3 - 4
Hardness Data:Measured
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
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
[(OH)
 
6
|(AsO
 
4
)
 
3
] · 3H
 
2
O
Essential elements:As, Ce, Cu, H, O
All elements listed in formula:As, Ce, Cu, H, O

Relationship of Agardite-(Ce) to other Species

Related to:
  • Mixite Group
    • Related Minerals - Nickel-Strunz Grouping):
    8.DL.05Foggite
    CaAl[(OH)
     
    2
    		|PO
     
    4
    		] · H
     
    2
    		O
    8.DL.10Cyrilovite
    NaFe
    3+
    3
    		[(OH)
     
    2
    		|PO
     
    4
    		]
     
    2
    		 · 2H
     
    2
    		O
    8.DL.10Millisite
    (Na,K)CaAl
     
    6
    		[(OH)
     
    9
    		|(PO
     
    4
    		)
     
    4
    		] · 3H
     
    2
    		O
    8.DL.10Wardite
    NaAl
     
    3
    		[(OH)
     
    2
    		|PO
     
    4
    		]
     
    2
    		 · 2H
     
    2
    		O
    8.DL.15Agardite-(Nd)
    (Nd,La,Ce)Cu
     
    6
    		[(OH)
     
    6
    		|(AsO
     
    4
    		)
     
    3
    		] · 3H
     
    2
    		O
    8.DL.15Agardite-(Y)
    (Y,Ca)Cu
     
    6
    		[(OH)
     
    6
    		|(AsO
     
    4
    		,HAsO
     
    4
    		)|(AsO
     
    4
    		)
     
    2
    		] · 3H
     
    2
    		O
    8.DL.15Agardite-(La)
    (La,Ce)Cu
     
    6
    		[(OH)
     
    6
    		|(AsO
     
    4
    		)
     
    3
    		] · 3H
     
    2
    		O
    8.DL.15Goudeyite
    (Al,Y)Cu
     
    6
    		[(OH)
     
    6
    		|(AsO
     
    4
    		)
     
    3
    		] · 3H
     
    2
    		O
    8.DL.15Mixite
    BiCu
     
    6
    		[(OH)
     
    6
    		|(AsO
     
    4
    		)
     
    3
    		] · 3H
     
    2
    		O
    8.DL.15Petersite-(Y)
    (Y,Ce,Nd)Cu
     
    6
    		[(OH)
     
    6
    		|(PO
     
    4
    		)
     
    3
    		] · 3H
     
    2
    		O
    8.DL.15Zálesíite
    (Ca,Y)Cu
     
    6
    		[(OH)
     
    6
    		|(HAsO
     
    4
    		,AsO
     
    4
    		)|(AsO
     
    4
    		)
     
    2
    		] · 3H
     
    2
    		O
    8.DL.15Plumboagardite
    (Pb,REE,Ca)Cu
     
    6
    		[(OH)
     
    6
    		|(HAsO
     
    4
    		,AsO
     
    4
    		)|(AsO
     
    4
    		)
     
    2
    		] · 3H
     
    2
    		O
    8.DL.15Calciopetersite
    CaCu
     
    6
    		[(OH)
     
    6
    		|HPO
     
    4
    		|(PO
     
    4
    		)
     
    2
    		] · 3H
     
    2
    		O
    8.DL.20Cheremnykhite
    Pb
     
    3
    		Zn
     
    3
    		TeO
     
    6
    		(VO
     
    4
    		)
     
    2
    8.DL.20Dugganite
    Pb
     
    3
    		Zn
     
    3
    		(Te
    6+
     
    		O
     
    6
    		)(AsO
     
    4
    		)
     
    2
    8.DL.20Kuksite
    Pb
     
    3
    		Zn
     
    3
    		TeO
     
    6
    		(PO
     
    4
    		)
     
    2
    8.DL.20Wallkilldellite-Mn
    Ca
     
    2
    		Mn
    2+
    3
    		[(OH)
     
    2
    		|AsO
     
    4
    		]
     
    2
    		 · 9H
     
    2
    		O
    8.DL.20Wallkilldellite-(Fe)
    (Ca,Cu)
     
    4
    		Fe
    2+
    6
    		[(OH,O)
     
    2
    		|(AsO
     
    4
    		,SiO
     
    4
    		)]
     
    4
    		 · 18H
     
    2
    		O
    8.DL.20Wallkilldellite

    Other Names for Agardite-(Ce)

    Synonyms:
    IMA2003-030
    German names:
    Agardit-(Ce)
    Russian names:
    Агардит-(Ce)

    Other Information

    Fluorescence in UV light:none
    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

    Internet Links for Agardite-(Ce)

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  • Raman and XRD data at RRUFF project
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  • Search for Agardite-(Ce) in the Natural History Museum (London) online catalogue
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    Localities for Agardite-(Ce)

    Hide Locality List
    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.
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    (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
    		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
     
    • Styria
      • Fischbacher Alpen Mts
        • Rettenegg
          • Prinzkogel (Prinzenkogel) Mt.
            • Prinzkogel Mt. mines
              • Southern District
    		Jakely, D. et al. (2008)
    France
     
    • 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
    Germany
     
    • Baden-Württemberg
      • Black Forest
        • Calw
        • 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 Mts
        • Clausthal-Zellerfeld
          • Oberschulenberg
    		No reference listed
    • Saxony
      • Erzgebirge
        • Oberwiesenthal
          • Niederschlag
    		Lapis, 19 (4), 13-22+50.
    Greece
     
    • Attikí (Attica; Attika) Prefecture
      • Lavrion (Laurion; Laurium) District
        • Lavrion District Mines
          • Agios Konstantinos [St Constantine] (Kamareza; Kamariza)
            • Kamareza Mines
    		No reference listed
    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
    • 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 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 (Oshikoto) Region
      • Tsumeb
    		No reference listed
    Russia
     
    • Urals Region
      • Chelyabinsk Oblast'
        • Karabash (Karabasch)
          • Soimon Valley
            • Zlatoya Gora)
    		Vladimir Yu. Karpenko data
    UK
     
    • England
      • Cornwall
        • Mount's Bay District
          • St Hilary
    		No reference listed
        • St Erth - Gwithian Area
          • Phillack
    		[Golley & Williams, 1995, 2 - "Cornish Mineral Reference Manual"]
        • St Just District
          • Botallack - Pendeen Area
            • Truthwall
    		No reference listed
    USA
     
    • Nevada
      • Pershing Co.
        • Antelope District
    Natural History Museum Vienna collection
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
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