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Agardite-(Nd)

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Big Photo

Big 3 mine, Railroad Springs District, Esmeralda Co., Nevada, USA
© mslama

Show Agardite-(Nd) Photos (16)



Formula:
NdCu
 
6
(AsO
 
4
)
 
3
(OH)
 
6
 · 3H
 
2
O
System:HexagonalColour:Grass-green, greenish, ...
Hardness:3 - 4
Member of:Mixite Group


Originally an incompletely characterised member of the Mixite Group, published without approval.
Finally approved in 2010, based on material from the Hilarion Mine, Lavrion, Greece.

Quantitative analyses are generally needed to ensure that the mixite-group sample in question is really Nd-dominant, and not simply a Nd-rich variety.

Originally reported from Wittichen, Schenkenzell, Black Forest, Baden-Württemberg, Germany.

Classification of Agardite-(Nd)

IMA status:Approved 2010
Strunz 8th edition ID:7/D.53-70
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-(Nd)

Type Locality:Hilarion Mine (Hilarion adit; Hilarion Mine No. 50), Hilarion area, Kamariza Mines (Kamareza Mines), Agios Konstantinos [St Constantine] (Kamariza), Lavrion District Mines, Lavrion (Laurion; Laurium) District, Attikí (Attica; Attika) Prefecture, Greece

Physical Properties of Agardite-(Nd)

Lustre:Vitreous
Colour:Grass-green, greenish, greenish-blue
Streak:Greenish white
Hardness (Mohs):3 - 4

Crystallography of Agardite-(Nd)

Crystal System:Hexagonal
Class (H-M):6/m - Dipyramidal
Space Group:P63/m
Cell Parameters:a = 13.548(8) Å, c = 5.894(6) Å
Ratio:a:c = 1 : 0.435
Unit Cell Volume:V 936.90 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
d-spacingIntensity
11.70 (100)
4.443 (22)
3.545 (18)
3.255 (8)
2.935 (18)
2.695 (13)
2.559 (10)
2.453 (30)

Chemical Properties of Agardite-(Nd)

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

Relationship of Agardite-(Nd) 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-(La)
(La,Ce)Cu
 
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
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-(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.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-(Nd)

Synonyms:
Chlorotile-(Nd)IMA2010-056
Other Languages:
German:Agardit-(Nd)
Russian:Агардит-(Nd)

Other Information

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-(Nd)

Reference List:

- +
Walenta, K. and Theye, T. (2004): Agardit-(Ce) von der Grube Clara im mittleren Schwarzwald. Aufschluss 55, 17-23. [includes data on Nd-dominant material from Johann Mine, Black Forest]

Pekov, I.V., Chukanov, N.V., Zadov, A.E., Voudouris, P., Magganas, A. and Katerinopoulos, A. (2010) Agardite-(Nd), IMA 2010-056. CNMNC Newsletter No. 7, February 2010, page 30; Mineralogical Magazine, 75, 27-31.

Internet Links for Agardite-(Nd)

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    • Localities for Agardite-(Nd)

    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.
    Australia
     
    • New South Wales
      • Robinson Co.
        • Cobar
          • Cobar
    		http://leme.anu.edu.au/Pubs/Advancesinregolith/Leverett_et_al.pdf
    • Western Australia
      • Pilbara Region
        • East Pilbara Shire
    		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
        • Rettenegg
          • Prinzkogel (Prinzenkogel)
            • Prinzkogel mines
              • Southern District
    		R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993); Jakely, D. et al. (2008)
    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
     
    • Rhône-Alpes
      • Rhône
        • Le Bois d'Oingt
          • Chessy-les-Mines
    Germany
     
    • Baden-Württemberg
      • Black Forest
        • Bad Rippoldsau
    		K. Walenta: "Die Mineralien des Schwarzwaldes", Weise (Munich), 1992
        • Gengenbach
          • Haigerach valley
    		Wittern,A. (1995) Mineralien finden im Schwarzwald
        • Pforzheim
          • Würm
    		Walenta: "Die Mineralien des Schwarzwaldes", Weise (Munich), 1992
        • Schenkenzell
          • Wittichen
            • Burgfelsen
    		Walenta, K. and Theye, T. (2004): Agardit-(Ce) von der Grube Clara im mittleren Schwarzwald. Aufschluss 55, 17-23. [with analysis of Johann material showing Nd>La]
    K. Walenta: "Die Mineralien des Schwarzwaldes", Weise (Munich), 1992
    K. Walenta: "Die Mineralien des Schwarzwaldes", Weise (Munich), 1992
        • St Blasien
          • Urberg
    		Walenta: "Die Mineralien des Schwarzwaldes", Weise (Munich), 1992
    Greece
     
    • Attikí (Attica; Attika) Prefecture
      • Lavrion (Laurion; Laurium) District
        • Lavrion District Mines
          • Agios Konstantinos [St Constantine] (Kamariza)
            • Kamariza Mines (Kamareza Mines)
              • Hilarion area
    		Pekov, I.V., Chukanov, N.V., Zadov, A.E., Voudouris, P., Magganas, A. and Katerinopoulos, A. (2010) Agardite-(Nd), IMA 2010-056. CNMNC Newsletter No. 7, February 2010, page 30; Mineralogical Magazine, 75, 27-31.; Anatoly Kasatkin
    UK
     
    • England
      • Cornwall
        • St Erth - Gwithian Area
          • Phillack
            • Great Wheal Alfred (Alfred Consols)
    		[Embrey & Symes, 1987, 40 - "Minerals of Cornwall and Devon"]
    USA
     
    • Nevada
      • Esmeralda Co.
        • Railroad Springs District
    		NBMG Spec. Pub. 31 Minerals of Nevada
    Dakota Matrix - Tom Loomis
      • Mineral Co.
        • Bell District
    		NBMG Spec. Pub. 31 Minerals of Nevada
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