Papikeite
A valid IMA mineral species - pending publication
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About Papikeite
Formula:
NaMg2(Mg3Al2}(Al3Si5O22)(OH)2
note: the Newsletter #74 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
Member of:
Type Locality:
Unique Identifiers
Mindat ID:
43390
Long-form identifier:
mindat:1:1:43390:3
Similar Names
| Papagoite | A valid IMA mineral species | CaCu[H3AlSi2O9] |
IMA Classification of Papikeite
Approved, Pending publication
IMA Formula:
NaMg6Al(Si6Al2)O22(OH)2
Approval year:
2023
Approval history:
IMA No. 2022-145
Classification of Papikeite
9.DD.05
9 : SILICATES (Germanates)
D : Inosilicates
D : Inosilicates with 2-periodic double chains, Si4O11; Orthoamphiboles
9 : SILICATES (Germanates)
D : Inosilicates
D : Inosilicates with 2-periodic double chains, Si4O11; Orthoamphiboles
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Ppk | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Chemistry of Papikeite
Mindat Formula:
NaMg2(Mg3Al2}(Al3Si5O22)(OH)2
note: the Newsletter #74 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
note: the Newsletter #74 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
Element Weights:
Crystallography of Papikeite
Crystal System:
Orthorhombic
Class (H-M):
mmm(2/m2/m2/m) - Dipyramidal
Space Group:
Pnma
Setting:
Pnma
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 Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.223 Å | (70) |
| 3.059 Å | (100) |
| 2.819 Å | (55) |
| 2.670 Å | (54) |
| 2.565 Å | (95) |
| 2.542 Å | (93) |
| 2.498 Å | (61) |
| 1.511 Å | (68) |
Type Occurrence of Papikeite
Place of Conservation of Type Material:
collections of the Royal Ontario Museum, 100 Queens Park,
Toronto, ON M5S 2C6, Canada, accession number M60376
Toronto, ON M5S 2C6, Canada, accession number M60376
Synonyms of Papikeite
Other Language Names for Papikeite
Relationship of Papikeite to other Species
Member of:
Other Members of Papikeite Root Name Group:
| Ferro-papikeite | NaFe2+2(Fe2+3Al2)(Si5Al3O22)(OH)2 | Orth. mmm(2/m2/m2/m) : Pnma |
Common Associates
Associations Based on Photo Data:
| 7 photos of Papikeite associated with Arfvedsonite | NaNa2(Fe2+4Fe3+)Si8O22(OH)2 |
| 7 photos of Papikeite associated with Analcime | Na(AlSi2O6) · H2O |
| 7 photos of Papikeite associated with Papikeite Root Name Group | NaB2+2(C2+3Al2)(Si5Al3)O22(OH)2 |
| 1 photo of Papikeite associated with Orthopyroxene Subgroup | |
| 1 photo of Papikeite associated with Rutile | TiO2 |
Related Minerals - Strunz-mindat Grouping
| 9.DD.05 | Suenoite | ◻Mn2+2Mg5Si8O22(OH)2 |
| 9.DD.05 | Proto-ferro-anthophyllite | ◻Fe2+2Fe2+5(Si8O22)(OH)2 |
| 9.DD.05 | Proto-ferro-suenoite | ◻Mn2+2(Fe2+5)(Si8O22)(OH)2 |
| 9.DD.05 | Gedrite | ◻Mg2(Mg3Al2)(Al2Si6O22)(OH)2 |
| 9.DD.05 | Holmquistite | ◻Li2(Mg3Al2)(Si8O22)(OH)2 |
| 9.DD.05 | 'Sodic-anthophyllite' | {Na}{Mg2}{Mg5}(AlSi7O22)(OH)2 |
| 9.DD.05 | 'Sodic-ferro-anthophyllite' | NaFe2+2Fe2+5(AlSi7O22)(OH)2 |
| 9.DD.05 | Ferro-papikeite | NaFe2+2(Fe2+3Al2)(Si5Al3O22)(OH)2 |
| 9.DD.05 | Ferro-anthophyllite | ◻Fe2+2Fe2+5(Si8O22)(OH)2 |
| 9.DD.05 | Proto-anthophyllite | ◻Mg2Mg5(Si8O22)(OH)2 |
| 9.DD.05 | Ferro-gedrite | ◻Fe2+2(Fe2+3Al2)(Al2Si6O22)(OH)2 |
| 9.DD.05 | 'Ferri-holmquistite' | ◻{Li2}{Mg3Fe3+2}(Si8O22)(OH)2 |
| 9.DD.05 | Ferro-ferri-holmquistite | ◻Li2(Fe2+3Fe3+2)(Si8O22)(OH)2 |
| 9.DD.05 | Ferro-holmquistite | ◻Li2(Fe2+3Al2)(Si8O22)(OH)2 |
| 9.DD.05 | Anthophyllite | ◻Mg2Mg5(Si8O22)(OH)2 |
Other Information
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 Papikeite
mindat.org URL:
https://www.mindat.org/min-43390.html
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References for Papikeite
Localities for Papikeite
Showing 5 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.
Australia | |
| John Walshe |
Norway (TL) | |
| Kihle et al. (2022) +1 other reference |
| Kullerud et al. (2019) |
| Smith (1988) |
USA | |
|
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Papikeite type locality, Ærøya, Arendal, Agder, Norway