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Agardite-(Nd)

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About Agardite-(Nd)Hide

Formula:
NdCu6(AsO4)3(OH)6 · 3H2O
Colour:
Grass-green, greenish, greenish-blue
Lustre:
Vitreous
Hardness:
3 - 4
Crystal System:
Hexagonal
Member of:
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)Hide

Approved
Approval Year:
2010
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

Physical Properties of Agardite-(Nd)Hide

Vitreous
Colour:
Grass-green, greenish, greenish-blue
Streak:
Greenish white
Hardness:
3 - 4 on Mohs scale

Chemical Properties of Agardite-(Nd)Hide

Formula:
NdCu6(AsO4)3(OH)6 · 3H2O
IMA Formula:
NdCu2+6(AsO4)3(OH)6 · 3H2O

Crystallography of Agardite-(Nd)Hide

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 V:
936.90 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
11.70 Å(100)
4.443 Å(22)
3.545 Å(18)
3.255 Å(8)
2.935 Å(18)
2.695 Å(13)
2.559 Å(10)
2.453 Å(30)

Type Occurrence of Agardite-(Nd)Hide

Synonyms of Agardite-(Nd)Hide

Other Language Names for Agardite-(Nd)Hide

Simplified Chinese:砷钕铜石
Traditional Chinese:砷釹銅石

Relationship of Agardite-(Nd) to other SpeciesHide

Member of:
Other Members of this group:
Agardite-(Ce)CeCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
Agardite-(Dy)(Dy,La)Cu6(AsO4)3(OH)6 · 3H2OHex.
Agardite-(La)LaCu6(AsO4)3(OH)6 · 3H2OHex. 6/m
Agardite-(Y)YCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
CalciopetersiteCaCu6(PO4)2(PO3OH)(OH)6 · 3H2OHex. 6/m : P63/m
GoudeyiteAlCu6(AsO4)3(OH)6 · 3H2OHex.
MixiteBiCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
Petersite-(Ce)Cu6Ce(PO4)3(OH)6·3H2OHex. 6/m : P63/m
Petersite-(La)Cu6La(PO4)3(OH)6 · 3H2OHex. 6/m : P63/m
Petersite-(Y)(Y,Ce,Nd)Cu6(PO4)3(OH)6 · 3H2OHex.
Plumboagardite(Pb,REE,Ca)Cu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
ZálesíiteCaCu6(AsO4)2(AsO3OH)(OH)6 · 3H2OHex.

Common AssociatesHide

Associated Minerals Based on Photo Data:
13 photos of Agardite-(Nd) associated with ConichalciteCaCu(AsO4)(OH)
2 photos of Agardite-(Nd) associated with PseudomalachiteCu5(PO4)2(OH)4

Related Minerals - Nickel-Strunz GroupingHide

8.DL.05FoggiteCaAl(PO4)(OH)2 · H2OOrth. mmm (2/m 2/m 2/m)
8.DL.10CyriloviteNaFe3+3(PO4)2(OH)4 · 2H2OTet. 4 2 2 : P41 21 2
8.DL.10Millisite(Na,K)CaAl6(PO4)4(OH)9 · 3H2OTet.
8.DL.10WarditeNaAl3(PO4)2(OH)4 · 2H2OTet. 4 2 2 : P41 21 2
8.DL.15Agardite-(Y)YCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
8.DL.15Agardite-(Ce)CeCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
8.DL.15Agardite-(La)LaCu6(AsO4)3(OH)6 · 3H2OHex. 6/m
8.DL.15GoudeyiteAlCu6(AsO4)3(OH)6 · 3H2OHex.
8.DL.15MixiteBiCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
8.DL.15Petersite-(Y)(Y,Ce,Nd)Cu6(PO4)3(OH)6 · 3H2OHex.
8.DL.15ZálesíiteCaCu6(AsO4)2(AsO3OH)(OH)6 · 3H2OHex.
8.DL.15Plumboagardite(Pb,REE,Ca)Cu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
8.DL.15CalciopetersiteCaCu6(PO4)2(PO3OH)(OH)6 · 3H2OHex. 6/m : P63/m
8.DL.20CheremnykhitePb3Zn3(VO4)2(TeO6)Orth.
8.DL.20DugganitePb3Zn3(AsO4)2(TeO6)Trig. 3 2 : P3 2 1
8.DL.20KuksitePb3Zn3(PO4)2(TeO6)Trig. 3 2 : P3 2 1
8.DL.20WallkilldelliteCa2Mn2+3(AsO4)2(OH)4 · 9H2OHex.
8.DL.20Wallkilldellite-(Fe)(Ca,Cu)4Fe2+6(AsO4,SiO4)4(OH,O)8 · 18H2OHex.
8.DL.25AngastoniteCaMgAl2(PO4)2(OH)4 · 7H2OTric. 1 : P1

Other InformationHide

Health Risks:
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)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Walenta, K., 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., Katerinopoulos, A. (2010) Agardite-(Nd), IMA 2010-056. CNMNC Newsletter No. 7, February 2010, page 30. Mineralogical Magazine: 75: 27-31.
Pekov, I.V., Chukanov, N.V., Zadov, A.E., Voudouris, P., Magganas, A., Katerinopoulos, A. (2011) Agardite-(Nd), NdCu6(AsO4)3(OH)6•3H2O from the Hilarion Mine, Lavrion, Greece: mineral description and chemical relations with other members of the agardite-zálesíite solid-solution system. Journal of Geosciences: 56: 249-255.

Internet Links for Agardite-(Nd)Hide

Localities for Agardite-(Nd)Hide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Australia
 
  • New South Wales
    • Robinson Co.
      • Cobar
Leverett, P., McKinnon, A.R., Williams, P.A. (2003) Mineralogy of the oxidised zone at the New Cobar orebody. Advances in Regolith. CRC LEME, Bentley, 267-270.
  • 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. Australian Journal of Mineralogy 12, 25-42. [as "Nd-dominant agardite"]
Austria
 
  • Salzburg
    • St. Johann im Pongau District
      • Bad Gastein
        • 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. Kolitsch, U. (2015): Eine Korrektur zum Beitrag „Agardit-(Ce), Agardit-(Nd), Plumboagardit(?), Pseudomalachit und Zálesíit(?) vom Kielbreinbau, Radhausberg-Südseite, Gasteinertal, Salzburg“. P. 237 in Niedermayr, G. et al. (2015): Neue Mineralfunde aus Österreich LXIV. Carinthia II, 205./125., 207-280. [sample mix-up by finder]
  • Styria
    • Weiz District
      • Rettenegg
        • Prinzkogel (Prinzenkogel)
          • Prinzkogel mines
            • Southern District
R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993); Jakely, D. et al. (2008)
Bulgaria
 
  • Sofia City Province
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
 
  • Auvergne-Rhône-Alpes
    • Rhône
      • Villefranche
        • Chessy-les-Mines
Germany
 
  • Baden-Württemberg
    • Freiburg
      • Ortenaukreis
        • Gengenbach
          • Haigerach valley
Wittern,A. (1995) Mineralien finden im Schwarzwald; Gröbner, J. (2017): Zálesíit von Oberhepschingen im Wiesental, Südschwarzwald, sowie ein aktueller Überblick über Agarditvorkommen im Schwarzwald. Erzgräber 31, 1-9.
        • Oberwolfach
Göb, S., Wenzel, T., Bau, M., Jacob, D.E., Loges, A., Markl, G. (2011). The redistribution of rare-earth elements in secondary minerals of hydrothermal veins, Schwarzwald, Southwestern Germany. Can. Mineral. 49, 1305-1333.
      • Rottweil
        • 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
      • Waldshut
        • Dachsberg
          • Urberg
Walenta: "Die Mineralien des Schwarzwaldes", Weise (Munich), 1992
    • Karlsruhe
      • Freudenstadt
        • Bad Rippoldsau-Schapbach
K. Walenta: "Die Mineralien des Schwarzwaldes", Weise (Munich), 1992
      • Pforzheim
        • Würm
Walenta: "Die Mineralien des Schwarzwaldes", Weise (Munich), 1992; Gröbner, J. (2017): Zálesíit von Oberhepschingen im Wiesental, Südschwarzwald, sowie ein aktueller Überblick über Agarditvorkommen im Schwarzwald. Erzgräber 31, 1-9.
Greece (TL)
 
  • Attica
    • East Attica
      • Lavreotiki
        • Lavrion Mining District
          • Agios Konstantinos (Kamariza)
            • Kamariza Mines (Kamareza Mines)
              • Hilarion Mine
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.; Pekov, I.V., Chukanov, N.V., Zadov, A.E., Voudouris, P., Magganas, A., Katerinopoulos, A. (2011): Agardite-(Nd), NdCu6(AsO4)3(OH)6•3H2O from the Hilarion Mine, Lavrion, Greece: mineral description and chemical relations with other members of the agardite-zálesíite solid-solution system. Journal of Geosciences, 56, 249-255.
Italy
 
  • Lombardy
    • Varese Province
      • Cuasso al Monte
        • Cavagnano
Guastoni, A., Gentile, P., Nestola, F., Zorzi, F. (2017): Agardite-(Y), agardite-(Ce) e agardite-(Nd) di Cuasso al Monte, Varese. Rivista Mineralogica Italiana, 41, 4 (4-2017), 228-232.
Guastoni, A., Gentile, P., Nestola, F., Zorzi, F. (2017): Agardite-(Y), agardite-(Ce) e agardite-(Nd) di Cuasso al Monte, Varese. Rivista Mineralogica Italiana, 41, 4 (4-2017), 228-232.
UK
 
  • England
    • Cornwall
      • Hayle
        • Great Wheal Alfred (Alfred Consols)
Embrey, P.G. (1978) Fourth supplementary list of British Minerals. Mineralogical Magazine, vol. 42, n° 322, p. 169-177.; Embrey & Symes (1987) Minerals of Cornwall and Devon.
USA
 
  • Nevada
    • Esmeralda Co.
      • Railroad Springs Mining District
NBMG Spec. Pub. 31 Minerals of Nevada
Dakota Matrix - Tom Loomis
    • Mineral Co.
      • Bell Mining District
NBMG Spec. Pub. 31 Minerals of Nevada
 
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