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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 (72)
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.

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: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

Member of Group:
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.25Angastonite
CaMgAl
 
2
(PO
 
4
)
 
2
(OH)
 
4
·7H
 
2
O

Other Names for Agardite-(Ce)

Synonyms:
IMA2003-030
Other Languages:
Czech:Agardit-(Ce)
German:Agardit-(Ce)
Italian:Agardite-(Ce)
Latvian:Agardīts-(Ce)
Russian:Агардит-(Ce)

Other Information

Fluorescence in UV light:none
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

Internet Links for Agardite-(Ce)

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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.
    (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
     
    • 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
    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 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] (Kamariza)
            • 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
    • 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
    		 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
    		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
          • Majuba Hill Mine (Mylar Mine)
    		Natural History Museum Vienna collection; Jensen, M. (1993): Update on the mineralogy of the Majuba Hill mine, Pershing County. Mineralogical Record. 24, 171-180.
    Mineral and/or Locality
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