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Penriceite

A valid IMA mineral species
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Formula:
[Mg(H2O)6][Na(H2O)2Al3(PO4)2F6] · H2O
simplified formula: NaMgAl3(PO4)2F6(H2O)9
Specific Gravity:
2.12 (Calculated)
Crystal System:
Monoclinic
Isostructural with:
Aldermanite
The F analogue ofaldermanite. Co-described with the relatedelliottite. Also related totomsquarryite.
Compare alsofluorcarmoite-(BaNa).

The structure is formed via periodic unit-cell-scale twinning of the structure of elliottite.


Classification of Penriceite

Mineral Symbols
Surface Relief:
Low

Comments:

Chemistry of Penriceite

Crystallography of Penriceite
General Appearance of Type Material:

platy crystals, up to 100 μm in diameter and 1-2 μm thick, forming rod-like aggregates
Place of Conservation of Type Material:
mineralogical collections of (1) the Museum of South Australia, North Terrace, Adelaide 5000, South Australia, Australia, catalogue number G32227 (holotype), and (2) the Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, catalogue number 76158 (cotype)
Geological Setting of Type Material:
marbles; a secondary phase
Associated Minerals at Type Locality:
AngastoniteCrandalliteGoethiteMinyulitePerhamite
Quartz

Common AssociatesTrig.3m(32/m) :R3m8.DM.ElliottiteNaMgAl3(PO4)2F6 · 9H2OMon. 2/m :B2/m8.DM.Betpakdalite-FeFe[Fe3+2 (H2O)15(OH)2Fe3+(H2O)6][Mo8As2Fe3+3O37]Mon. 2/m :B2/m8.DM.Betpakdalite-CaMg[Ca2(H2O)17Mg(H2O)6][Mo8As2Fe3+3O36(OH)]Mon. 2/m :B2/m8.DM.Chinnerite[Mg(H2O)6]Na(H2O)2Al3(PO4)2F6Mon. 2/m :P2/m8.DM.Sarrochite[Ca4(H2O)38][Mo8P2Fe3+3O37(OH)]Trig.3m(32/m) :P3m18.DM.05EsperanzaiteNaCa2Al2(AsO4)2(OH)F4 · 2H2OMon. 2/m :P21/m8.DM.05MoriniteNaCa2Al2(PO4)2(OH)F4 · 2H2OMon. 2/m :P21/m8.DM.10TangdaniteCa2Cu9(AsO4)4(SO4)0.5(OH)9 · 9H2OMon. 2/m :B2/b8.DM.10TyroliteCa2Cu9(AsO4)4(CO3)(OH)8 · 11H2OMon. 2/m8.DM.15Melkovite[Ca2(H2O)15Ca(H2O)6][Mo8P2Fe3+3O36(OH)]Mon. 2/m :B2/m8.DM.15Betpakdalite-NaCa[Na2(H2O)17Ca(H2O)6][Mo6+8As5+2Fe3+3O34(OH)3]Mon. 2/m :B2/m8.DM.15Betpakdalite-CaCa[Ca2(H2O)17Ca(H2O)6][Mo6+8As5+2Fe3+3O36(OH)]Mon. 2/m :B2/m8.DM.20Phosphovanadylite-BaBa[V4+4P2O8(OH)8] · 12H2OIso.43m :I43m8.DM.20Phosphovanadylite-CaCa[V4+4P2O12(OH)4] · 12H2OIso.43m :I43m8.DM.25YukoniteCa3Fe3+(AsO4)2(OH)3 · 5H2OOrth.mm28.DM.30UdumineliteCa3Al8(PO4)2O12 · 2H2O8.DM.35Aldermanite[Mg(H2O)6][Na(H2O)2Al3(PO4)2(OH,F)6] · H2OMon. 2/m :P21/b8.DM.35AzovskiteFe3+3(PO4)(OH)6 or near8.DM.35DelvauxiteCaFe4(PO4,SO4)2(OH)8 · 4-6H2O not confirmedAmor.8.DM.40Santafeite(Na,Ca,Sr)12(Mn2+,Fe3+,Al,Mg)8Mn4+8(VO4)16(OH,O)20 · 8H2OOrth.mmm(2/m2/m2/m)8.DM.55TapiaiteCa5Al2(AsO4)4(OH)4 · 12H2OMon.8.DM.60Alcantarillaite[Fe3+0.5(H2O)4][CaAs3+2(Fe3+2.5W6+0.5)(AsO4)2O7]Orth.mmm(2/m2/m2/m) :Imma

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  • Raman and XRD data at RRUFF project
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    • References for PenriceiteⓘPenrice marble quarry (TL)Miyawaki et al. (2021)+1 other referenceElliott et al. (2022)
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