Wickenburgite (original) (raw)

A valid IMA mineral species

About WickenburgiteHide

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Formula:

CaPb3Al2Si10O24(OH)6

Colour:

Colorless, white, pink

Name:

Named after the town of Wickenburg, Arizona, USA, near the discovery locality - the Potter-Cramer claim.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:4282:2

f863f78f-c8fb-43bb-8bb4-350fa8d35581

IMA Classification of WickenburgiteHide

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IMA Formula:

Pb3CaAl2Si10O27 · 4H2O

Type description reference:

Classification of WickenburgiteHide

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9.EG.55

9 : SILICATES (Germanates)
E : Phyllosilicates
G : Double nets with 6-membered and larger rings

74.2.1.1

74 : PHYLLOSILICATES Modulated Layers
2 : Modulated Layers

16.14.14

16 : Silicates Containing Aluminum and other Metals
14 : Aluminosilicates of Ti, Zr, Sn and Pb

Mineral SymbolsHide

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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Physical Properties of WickenburgiteHide

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Colour:

Colorless, white, pink

Cleavage:

Distinct/Good
Distinct on the {0001}

Density:

3.85 g/cm3 (Measured) 3.84 g/cm3 (Calculated)

Optical Data of WickenburgiteHide

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RI values:

_n_ω = 1.692 _n_ε = 1.648

δ = 0.044

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Chemistry of WickenburgiteHide

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Mindat Formula:

CaPb3Al2Si10O24(OH)6

Crystallography of WickenburgiteHide

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Class (H-M):

3_m_ - Ditrigonal Pyramidal

Cell Parameters:

a = 8.555(2) Å, c = 20.190(5) Å

Unit Cell V:

1,279.70 ų (Calculated from Unit Cell)

Morphology:

Type material:
Most crystals exhibit only {0001} and {1011} with traces of {1010}. Rare forms include {3032}, {1124}, {6.1.7.12}, {1012}, {3144}, {4150}.

Crystal StructureHide

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X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Geological EnvironmentHide

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Type Occurrence of WickenburgiteHide

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General Appearance of Type Material:

Well crystallized to granular and massive. Crystals from 0.2 - 1.5 mm in diameter.

Place of Conservation of Type Material:

Harvard University, Cambridge, Massachusetts, USA, 119099.
National Museum of Natural History, Washington, D.C., USA, 122875.

Geological Setting of Type Material:

Oxide zone mineral derived from lead ores.

Synonyms of WickenburgiteHide

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Other Language Names for WickenburgiteHide

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Relationship of Wickenburgite to other SpeciesHide

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Common AssociatesHide

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Associated Minerals Based on Photo Data:

Related Minerals - Strunz-mindat GroupingHide

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Fluorescence of WickenburgiteHide

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Other InformationHide

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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 WickenburgiteHide

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References for WickenburgiteHide

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Reference List:

Lam, A. E., Groat, L. A., Cooper, M. A., Hawthorne, F. C. (1994) The crystal structure of wickenburgite, Pb3CaAlAlSi10O273, a sheet structure. The Canadian Mineralogist, 32 (3) 525-532

Localities for WickenburgiteHide

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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

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- 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). 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.