Papikeite (original) (raw)

A valid IMA mineral species

About PapikeiteHide

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Formula:

NaMg2(Mg3Al2}(Al3Si5O22)(OH)2

note: the Newsletter #75 reports the formula as a BFe2+-dominant one (it would fit the species now listed in Mindat as ferro-papikeite); formula may thus change soon

Crystal System:

Orthorhombic

This page provides mineralogical data about Papikeite.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:43390:3

0638621a-a1a1-4ecd-a6cb-4dd1e0853a3c

IMA Classification of PapikeiteHide

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Approved, Pending publication

IMA Formula:

NaMg6Al(Si6Al2)O22(OH)2

Approval history:

IMA No. 2022-145

Classification of PapikeiteHide

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9.DD.05

9 : SILICATES (Germanates)
D : Inosilicates
D : Inosilicates with 2-periodic double chains, Si4O11; Orthoamphiboles

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.

Chemistry of PapikeiteHide

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Mindat Formula:

NaMg2(Mg3Al2}(Al3Si5O22)(OH)2

note: the Newsletter #75 reports the formula as a BFe2+-dominant one (it would fit the species now listed in Mindat as ferro-papikeite); formula may thus change soon

Crystallography of PapikeiteHide

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Crystal System:

Orthorhombic

Class (H-M):

m m m _(_2/_m_2/_m_2/m ) - Dipyramidal

Cell Parameters:

a = 18.6322(6) Å, b = 17.8492(6) Å, c = 5.2811(2) Å

Ratio:

a:b:c = 1.044 : 1 : 0.296

Unit Cell V:

1,756.33 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Type Occurrence of PapikeiteHide

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Place of Conservation of Type Material:

collections of the Royal Ontario Museum, 100 Queens Park,
Toronto, ON M5S 2C6, Canada, accession number M60376

Synonyms of PapikeiteHide

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Relationship of Papikeite to other SpeciesHide

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Other Members of this group:

Common AssociatesHide

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Associated Minerals Based on Photo Data:

Related Minerals - Strunz-mindat GroupingHide

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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 PapikeiteHide

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References for PapikeiteHide

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Reference List:

Hawthorne, F. C., Oberti, R., Harlow, G. E., Maresch, W. V., Martin, R. F., Schumacher, J. C., Welch, M. D. (2012) Nomenclature of the amphibole supergroup. American Mineralogist, 97 (11) 2031-2048 doi:10.2138/am.2012.4276

Localities for PapikeiteHide

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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.