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About Wallkilldellite-(Fe)Hide

(Ca,Cu)4Fe2+6(AsO4,SiO4)4(OH,O)8 · 18H2O
Brown to brownish yellow
Vitreous, Resinous
2 - 3
Crystal System:
Isostructural with:
The Fe analogue of Wallkilldellite. Note: The Mn dominant member of the series is not called Wallkilldellite-(Mn). The suffix "-(Mn)" has been used in error. Compare Mitridatite Group.

Apparently closely related to Unnamed (Arseniosiderite-related mineral) (see Walenta, 2006).

Classification of Wallkilldellite-(Fe)Hide

Approval Year:

D : Phosphates, etc. with additional anions, with H2O
L : With large and medium-sized cations, (OH, etc.):RO4 = 2:1

Physical Properties of Wallkilldellite-(Fe)Hide

Vitreous, Resinous
Brown to brownish yellow
Light brown
2 - 3 on Mohs scale

Optical Data of Wallkilldellite-(Fe)Hide

Uniaxial (-)

Chemical Properties of Wallkilldellite-(Fe)Hide

(Ca,Cu)4Fe2+6(AsO4,SiO4)4(OH,O)8 · 18H2O
IMA Formula:
Ca2Fe2+3(AsO4)2(OH)4 · 9H2O

Crystallography of Wallkilldellite-(Fe)Hide

Crystal System:

X-Ray Powder DiffractionHide

Powder Diffraction Data:
11.6 Å(10)
5.67 Å(8)
3.275 Å(7)
2.76 Å(15)
1.64 Å(25)

Type Occurrence of Wallkilldellite-(Fe)Hide

Place of Conservation of Type Material:
Muséum d’Histoire naturelle de Genève in Geneva, Switzerland.

Synonyms of Wallkilldellite-(Fe)Hide

Other Language Names for Wallkilldellite-(Fe)Hide

Common AssociatesHide

Associated Minerals Based on Photo Data:
2 photos of Wallkilldellite-(Fe) associated with CupriteCu2O

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-(Nd)NdCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
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.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.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 Wallkilldellite-(Fe)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Sarp, H., Mari, G., and Chiappero, P.-J. (1999) Wallkilldellite-Fe, (Ca,Cu)4Fe6[(As,Si)O4]4(OH)8·18H2O, a new mineral from the Roua mine (Alpes-Maritimes, France). Riviéra Scientifique, 12, 5–12 (in French with English abstract).
Jambor, J.L. and Roberts, A.C. (2001) New mineral names. American Mineralogist: 86: 197-200.
Walenta, K. (2006) Über das neue arseniosideritähnliche Mineral aus dem Schwarzwald und seine Beziehungen zum Wallkilldellit-Fe. Erzgräber 20, 15-17. (in German).

Internet Links for Wallkilldellite-(Fe)Hide

Localities for Wallkilldellite-(Fe)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.
  • Salta Province
Ronald G. Simpson (2017) Taron Project NI 43-101 Technical Report Salta Province, Argentina
  • Ontario
    • Timiskaming District
      • Cobalt-Gowganda region
        • Cobalt area
          • Coleman Township
            • Nipissing 404
Reiner Mielke 2018
  • Provence-Alpes-Côte d'Azur
    • Alpes-Maritimes
      • Guillaumes
        • Daluis
Sarp, H., G. Mari, et al. (1999). La wallkilldellite-Fe, (Ca,Cu)4Fe6((As,Si)O4)4(OH)8.18H2O, un nouveau minéral de la mine de Roua (Alpes Maritimes, France). Riviéra Scientifique 83: 5-12.
Sarp, H., Mari, G., and Chiappero, P.-J. (1999) Wallkilldellite-Fe, (Ca,Cu)4Fe6[(As,Si)O4]4(OH)8·18H2O, a new mineral from the Roua mine (Alpes-Maritimes, France). Riviéra Scientifique, 12, 5–12 (in French with English abstract).; Jambor, J.L. and Roberts, A.C. (2001) New mineral names. American Mineralogist: 86: 197-200. Mineralogical Record 32: 312.; ; Sarp, H. and Černý, R. (2000): Rollandite, Cu3(AsO4)2.4H2O, a new mineral: its description and crystal structure. Eur. J. Mineral., 12, 1045-1050. MR 33 (2002), 169
  • Oita Prefecture
    • Saiki City
      • Kiura mine (Shin-Kiura mine; Kiura emery mine)
Enju, S., & Uehara, S. (2015). Yukonite and wallkilldellite–(Fe) from the Kiura mine, Oita Prefecture, Japan. Journal of Mineralogical and Petrological Sciences, 110(3), 150-155.
  • Valais
    • Anniviers
      • Ayer
Ansermet, S. (2012): Mines et minéraux du Valais - II. Anniviers et Tourtemagne. With contributions by N. Meisser, Ed. Porte-plumes (Ayer)
Mineral and/or Locality  
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