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Agardite-(Dy)

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Formula:
(Dy,La)Cu6(AsO4)3(OH)6 · 3H2O
Colour:
Grass green
Lustre:
Vitreous
Hardness:
3 - 4
Crystal System:
Hexagonal
Member of:
Incompletely characterised member of the Mixite Group.
A misinterpretation of chemical-analytical data seems highly probable - misidentified P-bearing agardite-(Y)?!

See also the highly questionable churchite-(Dy).




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Classification of Agardite-(Dy)Hide

Notes:
Published without approval
7/D.53-80

7 : Phosphates, Arsenates, Vanadates
D : Water-bearing phosphates with unfamiliar anions, mostly cations of small size: Be, Li
53 : Mixite - Agardite group

Physical Properties of Agardite-(Dy)Hide

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

Chemical Properties of Agardite-(Dy)Hide

Formula:
(Dy,La)Cu6(AsO4)3(OH)6 · 3H2O

Crystallography of Agardite-(Dy)Hide

Crystal System:
Hexagonal

Other Language Names for Agardite-(Dy)Hide

Simplified Chinese:砷镝铜石
Traditional Chinese:砷鏑銅石

Relationship of Agardite-(Dy) to other SpeciesHide

Member of:
Other Members of this group:
Agardite-(Ce)CeCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
Agardite-(La)LaCu6(AsO4)3(OH)6 · 3H2OHex. 6/m
Agardite-(Nd)NdCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/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.

Related Minerals - Nickel-Strunz Grouping (8th Edition)Hide

7/D.53-05CalciopetersiteCaCu6(PO4)2(PO3OH)(OH)6 · 3H2OHex. 6/m : P63/m
7/D.53-10Petersite-(Y)(Y,Ce,Nd)Cu6(PO4)3(OH)6 · 3H2OHex.
7/D.53-20GoudeyiteAlCu6(AsO4)3(OH)6 · 3H2OHex.
7/D.53-30ZálesíiteCaCu6(AsO4)2(AsO3OH)(OH)6 · 3H2OHex.
7/D.53-40Agardite-(Y)YCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
7/D.53-50Agardite-(La)LaCu6(AsO4)3(OH)6 · 3H2OHex. 6/m
7/D.53-60Agardite-(Ce)CeCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
7/D.53-70Agardite-(Nd)NdCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
7/D.53-85Plumboagardite(Pb,REE,Ca)Cu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
7/D.53-90MixiteBiCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
7/D.53-95Juanitaite(Cu,Ca,Fe)10Bi(AsO4)4(OH)11 · 2H2OTet. 4/mmm (4/m 2/m 2/m) : P42/nnm
7/D.53-100MrázekiteBi2Cu3(PO4)2O2(OH)2 · H2OMon. 2/m

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-(Dy)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Walenta: "Die Mineralien des Schwarzwaldes", Weise (Munich), 1992

Internet Links for Agardite-(Dy)Hide

Localities for Agardite-(Dy)Hide

ⓘ - 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.
Germany
 
  • Baden-Württemberg
    • Black Forest
      • Schenkenzell
Walenta: "Die Mineralien des Schwarzwaldes", Weise (Munich), 1992
Mineral and/or Locality  
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