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Wallkilldellite-(Fe)
A valid IMA mineral species
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About Wallkilldellite-(Fe)
Formula:
(Ca,Cu)4Fe2+6(AsO4,SiO4)4(OH,O)8 · 18H2O
Colour:
Brown to brownish yellow
Lustre:
Vitreous, Resinous
Hardness:
2 - 3
Specific Gravity:
3.0
Crystal System:
Hexagonal
Name:
The suffix, Fe, indicates the iron analog of wallkilldellite
Type Locality:
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).
Apparently closely related to Unnamed (Arseniosiderite-related mineral) (see Walenta, 2006).
Unique Identifiers
Mindat ID:
7361
Long-form identifier:
mindat:1:1:7361:1
Similar Names
| Wallkilldellite | A valid IMA mineral species | Ca2Mn32+(AsO4)2(OH)4 · 9H2O |
IMA Classification of Wallkilldellite-(Fe)
Approved
IMA Formula:
Ca2Fe2+3(As5+O4)2(OH)4·9H2O
Approval year:
1997
Classification of Wallkilldellite-(Fe)
8.DL.20
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
L : With large and medium-sized cations, (OH, etc.):RO4 = 2:1
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
L : With large and medium-sized cations, (OH, etc.):RO4 = 2:1
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Wlk-Fe | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Wlk-(Fe) | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Physical Properties of Wallkilldellite-(Fe)
Vitreous, Resinous
Transparency:
Translucent
Comment:
Vitreous on cleavage surfaces; slightly resinous on fracture surfaces.
Colour:
Brown to brownish yellow
Streak:
Light brown
Hardness:
2 - 3 on Mohs scale
Cleavage:
Perfect
{0001}
{0001}
Density:
3.0(1) g/cm3 (Measured) 2.92(2) g/cm3 (Calculated)
Optical Data of Wallkilldellite-(Fe)
Type:
Uniaxial (-)
Pleochroism:
Strong
Comments:
O = brown; E = pale brown-yellow.
Chemistry of Wallkilldellite-(Fe)
Mindat Formula:
(Ca,Cu)4Fe2+6(AsO4,SiO4)4(OH,O)8 · 18H2O
Element Weights:
Crystallography of Wallkilldellite-(Fe)
Crystal System:
Hexagonal
Cell Parameters:
a = 6.548(5) Å, c = 23.49(3) Å
Ratio:
a:c = 1 : 3.587
Unit Cell V:
872.23 ų (Calculated from Unit Cell)
Z:
1
Morphology:
Spherules, to 0.1 mm, consisting of extremely thin radiating plates,
Comment:
Point Group: 6/m 2/m 2/m, 6m2, or 6mm; space group: P63/mmc, P62c, or P63mc. Enju and Uehara (2015), give, for well-crystallsied material, a different hexagonal cell: a = 11.341(6) Å and c = 11.57(2) Å.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 11.600 Å | (100) |
| 5.670 Å | (80) |
| 3.275 Å | (70) |
| 1.641 Å | (25) |
| 2.760 Å | (15) |
| 2.850 Å | (10) |
| 2.547 Å | (10) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47d : [Arsenates, antimonates, selenates, bismuthinates] |
Type Occurrence of Wallkilldellite-(Fe)
Place of Conservation of Type Material:
Muséum d’Histoire naturelle de Genève in Geneva, Switzerland.
Geological Setting of Type Material:
oxidation zone of copper arsenide deposit
Associated Minerals at Type Locality:
Synonyms of Wallkilldellite-(Fe)
Other Language Names for Wallkilldellite-(Fe)
Dutch:Wallkilldelliet-(Fe)
German:Wallkilldellit-(Fe)
Common Associates
Associations Based on Photo Data:
| 7 photos of Wallkilldellite-(Fe) associated with Malachite | Cu2(CO3)(OH)2 |
| 5 photos of Wallkilldellite-(Fe) associated with Cuprite | Cu2O |
| 2 photos of Wallkilldellite-(Fe) associated with Tyrolite | Ca2Cu9(AsO4)4(CO3)(OH)8 · 11H2O |
| 1 photo of Wallkilldellite-(Fe) associated with Annabergite | Ni3(AsO4)2 · 8H2O |
| 1 photo of Wallkilldellite-(Fe) associated with Asbolane | (Ni,Co)2-xMn4+(O,OH)4 · nH2O |
Related Minerals - Strunz-mindat Grouping
| 8.DL.05 | Foggite | CaAl(PO4)(OH)2 · H2O |
| 8.DL.10 | Fluorowardite | NaAl3(PO4)2F2(OH)2(H2O)2 |
| 8.DL.10 | Wardite | NaAl3(PO4)2(OH)4 · 2H2O |
| 8.DL.10 | Millisite | (Na,K)CaAl6(PO4)4(OH)9 · 3H2O |
| 8.DL.10 | Cyrilovite | NaFe3+3(PO4)2(OH)4 · 2H2O |
| 8.DL.15 | Petersite-(Ce) | CeCu6(PO4)3(OH)6 · 3H2O |
| 8.DL.15 | Agardite-(Nd) | NdCu6(AsO4)3(OH)6 · 3H2O |
| 8.DL.15 | Agardite-(Y) | YCu6(AsO4)3(OH)6 · 3H2O |
| 8.DL.15 | Agardite-(Ce) | CeCu6(AsO4)3(OH)6 · 3H2O |
| 8.DL.15 | 'Agardite-(Dy)' | (Dy,La)Cu6(AsO4)3(OH)6 · 3H2O |
| 8.DL.15 | Agardite-(La) | LaCu6(AsO4)3(OH)6 · 3H2O |
| 8.DL.15 | Petersite-(Y) | YCu6(PO4)3(OH)6 · 3H2O |
| 8.DL.15 | Zálesíite | CaCu6(AsO4)2(AsO3OH)(OH)6 · 3H2O |
| 8.DL.15 | Mixite | BiCu6(AsO4)3(OH)6 · 3H2O |
| 8.DL.15 | Petersite-(La) | LaCu6(PO4)3(OH)6 · 3H2O |
| 8.DL.15 | Goudeyite | AlCu6(AsO4)3(OH)6 · 3H2O |
| 8.DL.15 | Calciopetersite | CaCu6(PO4)2(PO3OH)(OH)6 · 3H2O |
| 8.DL.15 | Plumboagardite | PbCu6(AsO4)2(AsO3OH)(OH)6 · 3H2O |
| 8.DL.20 | Dugganite | Pb3Zn3(AsO4)2(TeO6) |
| 8.DL.20 | Wallkilldellite | Ca2Mn2+3(AsO4)2(OH)4 · 9H2O |
| 8.DL.20 | Cheremnykhite | Pb3Zn3(VO4)2(TeO6) |
| 8.DL.20 | Kuksite | Pb3Zn3(PO4)2(TeO6) |
| 8.DL.25 | Angastonite | CaMgAl2(PO4)2(OH)4 · 7H2O |
| 8.DL.30 | Långbanshyttanite | Pb2Mn2Mg(AsO4)2(OH)4 · 6H2O |
Other Information
Notes:
Soluble in HCl.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Wallkilldellite-(Fe)
mindat.org URL:
https://www.mindat.org/min-7361.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Wallkilldellite-(Fe)
Localities for Wallkilldellite-(Fe)
Showing 11 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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).
All localities listed without proper references should be considered as questionable.
Argentina | |
| Ronald G. Simpson (2017) |
Austria | |
| Jakely (Hrsg.) |
Canada | |
| Reiner Mielke (2018) |
France | |
| Sarp et al. (1999) |
| Sarp et al. (1999) +3 other references | |
Japan | |
| ENJU et al. (2015) |
Poland | |
| Siuda et al. (2019) |
Spain | |
| Calvo Rebollar et al. (2022) |
| Joan Abella i Creus (Joanabellacreus@gmail.com) |
Switzerland | |
| Ansermet (2012) |
| Ansermet et al. (2021) |
Quick NavTopAbout Wallkilldellite-(Fe)Unique IdentifiersSimilar NamesIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Roua Mines, Daluis, Nice Arrondissement, Alpes-Maritimes, Provence-Alpes-Côte d'Azur, France