The F analogue of aldermanite. Co-described with the related elliottite. Also related to tomsquarryite.
Compare also fluorcarmoite-(BaNa).

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

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Unique IdentifiersHide

Mindat ID:

55685

Long-form identifier:

mindat:1:1:55685:1

GUID
(UUID V4):

2b33e35b-d1dc-4612-9847-64748fbd2d5c

IMA Classification of PenriceiteHide

IMA status:

Approved

Classification of PenriceiteHide

Strunz-mindat (2024):

8.DM.

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H₂O
M : With large and medium-sized cations, (OH, etc.):RO₄ > 2:1

Mineral SymbolsHide

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

Symbol	Source	Reference
Prc	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of PenriceiteHide

Density:

2.12 g/cm³ (Calculated)

Optical Data of PenriceiteHide

Type:

Biaxial (+)

RI values:

n_α = 1.502(2) n_β = 1.503(2) n_γ =
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2V:

Measured: 10° to 20°

Max Birefringence:

δ = 1.502

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

Surface Relief:

Low

Comments:

γ not determined due to extreme thinness of the crystals; orientation: X = b, Y ≈ c, Z ≈ a*

Chemistry of PenriceiteHide

Mindat Formula:

[Mg(H₂O)₆][Na(H₂O)₂Al₃(PO₄)₂F₆] · H₂O

simplified formula: NaMgAl₃(PO₄)₂F₆(H₂O)₉

Elements listed:

Al, F, H, Mg, Na, O, P - search for minerals with similar chemistry

Crystallography of PenriceiteHide

Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Space Group:

P2₁/b

Setting:

P2₁/c

Cell Parameters:

a = 13.478(3) Å, b = 9.971(2) Å, c = 6.999(1) Å
β = 97.20(3)°

Ratio:

a:b:c = 1.352 : 1 : 0.702

Unit Cell V:

933.17 Å³ (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
13.39 Å	(100)
8.00 Å	(30)
5.718 Å	(12)
5.562 Å	(26)
3.284 Å	(4)
3.004 Å	(5)
2.855 Å	(16)
2.782 Å	(15)

Type Occurrence of PenriceiteHide

Type Locality:

ⓘ Penrice marble quarry, Penrice, Barossa Valley, North Mt Lofty Ranges, Mt Lofty Ranges, South Australia, Australia

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:

Quartz	Perhamite	Minyulite	Goethite	Crandallite
Angastonite

Common AssociatesHide

Associated Minerals Based on Photo Data:

1 photo of Penriceite associated with Tomsquarryite

NaMgAl₃(PO₄)₂(OH)₆ · 8H₂O

Related Minerals - Strunz-mindat Grouping Hide

8.DM.	Betpakdalite-CaMg	[Ca₂(H₂O)₁₇Mg(H₂O)₆][Mo₈As₂Fe³⁺₃O₃₆(OH)]	Mon. 2/m : B2/m
8.DM.	Betpakdalite-FeFe	[Fe³⁺₂ (H₂O)₁₅(OH)₂Fe³⁺(H₂O)₆][Mo₈As₂Fe³⁺₃O₃₇]	Mon. 2/m : B2/m
8.DM.	Elliottite	NaMgAl₃(PO₄)₂F₆ · 9H₂O	Mon. 2/m : B2/m
8.DM.	Sarrochite	[Ca₄(H₂O)₃₈][Mo₈P₂Fe³⁺₃O₃₇(OH)]	Trig. 3m (3 2/m) : P3m1
8.DM.	Tomsquarryite	NaMgAl₃(PO₄)₂(OH)₆ · 8H₂O	Trig. 3m (3 2/m) : R3m
8.DM.	Chinnerite	[Mg(H₂O)₆]Na(H₂O)₂Al₃(PO₄)₂F₆	Mon. 2/m : P2/m
8.DM.05	Morinite	NaCa₂Al₂(PO₄)₂(OH)F₄ · 2H₂O	Mon. 2/m : P2₁/m
8.DM.05	Esperanzaite	NaCa₂Al₂(AsO₄)₂(OH)F₄ · 2H₂O	Mon. 2/m : P2₁/m
8.DM.10	Tyrolite	Ca₂Cu₉(AsO₄)₄(CO₃)(OH)₈ · 11H₂O	Mon. 2/m
8.DM.10	Tangdanite	Ca₂Cu₉(AsO₄)₄(SO₄)_0.5(OH)₉ · 9H₂O	Mon. 2/m : B2/b
8.DM.15	Betpakdalite-CaCa	[Ca₂(H₂O)₁₇Ca(H₂O)₆][Mo⁶⁺₈As⁵⁺₂Fe³⁺₃O₃₆(OH)]	Mon. 2/m : B2/m
8.DM.15	Melkovite	[Ca₂(H₂O)₁₅Ca(H₂O)₆][Mo₈P₂Fe³⁺₃O₃₆(OH)]	Mon. 2/m : B2/m
8.DM.15	Betpakdalite-NaCa	[Na₂(H₂O)₁₇Ca(H₂O)₆][Mo⁶⁺₈As⁵⁺₂Fe³⁺₃O₃₄(OH)₃]	Mon. 2/m : B2/m
8.DM.20	Phosphovanadylite-Ba	Ba[V⁴⁺₄P₂O₈(OH)₈] · 12H2O	Iso. 4 3m : I4 3m
8.DM.20	Phosphovanadylite-Ca	Ca[V⁴⁺₄P₂O₁₂(OH)₄] · 12H₂O	Iso. 4 3m : I4 3m
8.DM.25	Yukonite	Ca₃Fe³⁺(AsO₄)₂(OH)₃ · 5H₂O	Orth. mm2
8.DM.30	Uduminelite	Ca₃Al₈(PO₄)₂O₁₂ · 2H₂O
8.DM.35	Aldermanite	[Mg(H₂O)₆][Na(H₂O)₂Al₃(PO₄)₂(OH,F)₆] · H₂O	Mon. 2/m : P2₁/b
8.DM.35	Azovskite	Fe³⁺₃(PO₄)(OH)₆ or near
8.DM.35	Delvauxite	CaFe₄(PO₄,SO₄)₂(OH)₈ · 4-6H₂O not confirmed	Amor.
8.DM.40	Santafeite	(Na,Ca,Sr)₁₂(Mn²⁺,Fe³⁺,Al,Mg)₈Mn⁴⁺₈(VO₄)₁₆(OH,O)₂₀ · 8H₂O	Orth. mmm (2/m 2/m 2/m)
8.DM.55	Tapiaite	Ca₅Al₂(AsO₄)₄(OH)₄ · 12H₂O	Mon.
8.DM.60	Alcantarillaite	[Fe³⁺_0.5(H₂O)₄][CaAs³⁺₂(Fe³⁺_2.5W⁶⁺_0.5)(AsO₄)₂O₇]	Orth. mmm (2/m 2/m 2/m) : Imma

Other InformationHide

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 PenriceiteHide

mindat.org URL:

https://www.mindat.org/min-55685.html
Please feel free to link to this page.

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External Links:

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Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

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References for PenriceiteHide

Reference List:

Miyawaki, Ritsuro, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2021) CNMNC Newsletter 64. IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) Mineralogical Magazine, 86 (1) 178-182 doi:10.1180/mgm.2021.93

Elliott, P., Grey, I.E., Macrae, C.M., Kampf, A.R., Davidson, C. (2022): Penriceite, [Mg(H₂O)₆][Na(H₂O)₂Al₃(PO₄)₂F₆]·H₂O, the F-analogue of aldermanite, from the Penrice marble quarry. Australian Journal of Mineralogy, 23(1), 5-12.

(2023) Penriceite. Handbook of Mineralogy. Mineralogical Society of America

Localities for PenriceiteHide

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

- 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.


Australia (TL)
South Australia Mt Lofty Ranges North Mt Lofty Ranges Barossa Valley Penrice ⓘ Penrice marble quarry (TL)	Miyawaki et al. (2021) +1 other reference
Kapunda ⓘ Tom's Quarry	Elliott et al. (2022)

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Penriceite