Xenophyllite
A valid IMA mineral species
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About Xenophyllite
Formula:
Na4Fe2+7(PO4)6
Colour:
Bluish-green to grey-green
Lustre:
Vitreous
Hardness:
3½ - 4
Specific Gravity:
3.58
Crystal System:
Triclinic
Name:
Named from Greek ξενoς (xénos, stranger) and ϕυλλo (fýllo, leaf), for its extraterrestrial origin and perfect cleavage of its crystals.
May or may not be a member of the Fillowite Group. Not listed as belonging according to "IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 54"
Unique Identifiers
Mindat ID:
29097
Long-form identifier:
mindat:1:1:29097:3
GUID
(UUID V4):
(UUID V4):
ba6d727f-ac92-4eeb-bce1-ad2b7981e3af
IMA Classification of Xenophyllite
Approved
IMA Formula:
Na4Fe7(PO4)6
Approval year:
2006
First published:
2020
Type description reference:
Britvin, Sergey N., Krivovichev, Sergey V., Obolonskaya, Edita V., Vlasenko, Natalia S., Bocharov, Vladimir N., Bryukhanova, Vera V. (2020) Xenophyllite, Na4Fe7(PO4)6, an Exotic Meteoritic Phosphate: New Mineral Description, Na-ions Mobility and Electrochemical Implications. Minerals, 10 (4) 300 doi:10.3390/min10040300
Classification of Xenophyllite
8.AC.50
8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
C : With medium-sized and large cations
8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
C : With medium-sized and large cations
Dana 7th ed.:
38.2.9.6
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 |
---|---|---|
Xp | 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 Xenophyllite
Vitreous
Transparency:
Translucent
Colour:
Bluish-green to grey-green
Streak:
White
Hardness:
3½ - 4 on Mohs scale
Cleavage:
Perfect
{010}
{010}
Density:
3.58(5) g/cm3 (Measured) 3.53(1) g/cm3 (Calculated)
Optical Data of Xenophyllite
Type:
Biaxial (-)
RI values:
nα = 1.675(2) nβ = 1.681(2) nγ = 1.681(2)
2V:
Measured: 10° to 20°
Max Birefringence:
δ = 0.006
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
High
Pleochroism:
Visible
Comments:
yellow-green (X) to dark grey-green (Z).
Chemistry of Xenophyllite
Mindat Formula:
Na4Fe2+7(PO4)6
Elements listed:
Crystallography of Xenophyllite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 9.643 Å, b = 9.633 Å, c = 17.645 Å
α = 88.26°, β = 88.16°, γ = 64.83°
α = 88.26°, β = 88.16°, γ = 64.83°
Ratio:
a:b:c = 1.001 : 1 : 1.832
Unit Cell V:
1,482.42 ų (Calculated from Unit Cell)
Z:
3
Twinning:
on (111)
Comment:
Space group P1 or P-1. Xenophyllite crystals are substantially curved and twinned on (111) (in triclinic setting). That results in severe X-ray reflection overlapping and precludes obtaining the single-crystal data suitable for the structure refinement.
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
5.12 Å | (2) |
3.034 Å | (10) |
2.888 Å | (2) |
2.715 Å | (8) |
2.585 Å | (3) |
2.405 Å | (2) |
1.870 Å | (2) |
1.769 Å | (2) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Near-surface Processes | |
30 : Terrestrial impact minerals |
Type Occurrence of Xenophyllite
General Appearance of Type Material:
Tiny lamella up to 0.15 mm long cross-cutting millimeter-sized grains of sarcopside. Elongated lamellar inclusions up to 20 × 150 μm
Place of Conservation of Type Material:
The holotype specimen of xenophyllite is deposited at the collection of the Mining Museum, Saint Petersburg Mining University, St. Petersburg, Russia, under the inventory number 23/2005.
Geological Setting of Type Material:
Phosphide-phosphate assemblages confined to troilite nodules in metallic meteorites
Associated Minerals at Type Locality:
Reference:
Britvin, S.N.; Krivovichev, S.V.; Obolonskaya, E.V.; Vlasenko, N.S.; Bocharov, V.N.; Bryukhanova, V.V. (2020) Xenophyllite, Na4Fe7(PO4)6, an Exotic Meteoritic Phosphate: New Mineral Description, Na-ions Mobility and Electrochemical Implications. Minerals: 10: 300.
Synonyms of Xenophyllite
Common Associates
Associated Minerals Based on Photo Data:
1 photo of Xenophyllite associated with Sarcopside | (Fe2+,Mn2+,Mg)3(PO4)2 |
1 photo of Xenophyllite associated with Goethite | α-Fe3+O(OH) |
Related Minerals - Strunz-mindat Grouping
8.AC. | Angarfite | NaFe3+5(PO4)4(OH)4 · 4H2O |
8.AC. | Wopmayite | Ca6Na3◻Mn(PO4)3(PO3OH)4 |
8.AC.X | Dyrnaesite-(La) | Na8Ce4+(La,REE)2(PO4)6 |
8.AC. | Edtollite | K2NaCu5Fe3+O2(AsO4)4 |
8.AC. | Alumoedtollite | K2NaCu5AlO2(AsO4)4 |
8.AC. | Crocobelonite | CaFe3+2O(PO4)2 |
8.AC. | Manganobadalovite | NaNaMn(MgFe3+)(AsO4)3 |
8.AC. | Beershevaite | CaFe3+3(PO4)3O |
8.AC. | Calciohatertite | NaNaCa(CaFe3+)(AsO4)3 |
8.AC. | Kabalovite | Fe2+3Fe3+4(PO4)6 |
8.AC. | Nazarchukite | Ca2NiFe3+2(PO4)4 |
8.AC. | Changesite–(Y) | (Ca8Y)◻Fe2+(PO4)7 |
8.AC. | Crocobelonite-1M | CaFe3+2O(PO4)2 |
8.AC. | Ebnerite | (NH4)Zn(PO4) |
8.AC. | Magnesioqingheiite | Na2Mg(MgAl)(PO4)3 |
8.AC. | Epiebnerite | (NH4)Zn(PO4) |
8.AC.02 | Grigorievite | Cu3Fe3+2Al2(VO4)6 |
8.AC.02 | Koksharovite | CaMg2Fe3+4(VO4)6 |
8.AC.02 | Ziminaite | Fe3+ 6 (VO4)6 |
8.AC.05 | Calciojohillerite | NaCaMg3(AsO4)3 |
8.AC.05 | Howardevansite | NaCuFe2(VO4)3 |
8.AC.05 | O'Danielite | Na(Zn,Mg)3(AsO4)(AsO3OH)2 |
8.AC.05 va | Alluaudite-Na□ | ◻4Na4Mn2+4Fe3+8(PO4)12 |
8.AC.05 va | Alluaudite-Ca□ | ◻4Ca4Mn2+4Fe3+8(PO4)12 |
8.AC.05 va | Ferroalluaudite-NaNa | Na4Na4Fe2+4Fe3+8(PO4)12 |
8.AC.05 | Hagendorfite-NaNa | NaNaFe2+(Mn2+,Mn3+)(PO4)3 (?) |
8.AC.05 | Erikapohlite | Cu3(Zn,Cu,Mg)4Ca2(AsO4)6 · 2H2O |
8.AC.05 | Hatertite | Na2(Ca,Na)(Fe3+,Cu)2(AsO4)3 |
8.AC.05 | Unnamed (Na-Mg Arsenate Hydroxyarsenate) | NaMg3(AsO4)(AsO3OH)2 |
8.AC.05 | Unnamed (Na-Zn-H Arsenate Hydrxyarsenate) | Na(Na0.6Zn0.4)Zn2(H0.6AsO4)(AsO3OH)2 |
8.AC.05 | Zincobradaczekite | NaZn2Cu2(AsO4)3 |
8.AC.05 | Badalovite | Na2Mg2Fe(AsO4)3 |
8.AC.05 | Magnesiocanutite | NaMnMg2[AsO4]2[AsO2(OH)2] |
8.AC.05 | Magnesiohatertite | (Na,Ca)2Ca(Mg,Fe3+)2(AsO4)3 |
8.AC.05 | Khrenovite | Na3Fe3+2(AsO4)3 |
8.AC.05 | Paraberzeliite | NaCa2Mg2(AsO4)3 |
8.AC.05 | Camanchacaite | NaCaMg2[AsO4][AsO3(OH)]2 |
8.AC.07 | Zhanghuifenite | Na3Mn4Mg2Al(PO4)6 |
8.AC.07 | Ferrobobfergusonite | Na2Fe2+5Fe3+Al(PO4)6 |
8.AC.10 | Alluaudite | (Na,Ca)Mn2+(Fe3+,Mn2+,Fe2+,Mg)2(PO4)3 |
8.AC.10 | Arseniopleite | NaCaMnMn2(AsO4)3 |
8.AC.10 | Caryinite | (Na,Pb)(Ca,Na)CaMn2+2(AsO4)3 |
8.AC.10 | Ferroalluaudite | (Na,Ca)Fe2+(Fe3+,Mn2+,Fe2+)2(PO4)3 |
8.AC.10 | Hagendorfite | NaCaMn2+Fe2+2(PO4)3 |
8.AC.10 | Johillerite | Na(Mg,Zn)3Cu(AsO4)3 |
8.AC.10 | Maghagendorfite | (Na,◻)MgMn2+(Fe2+,Fe3+)2(PO4)3 |
8.AC.10 | Nickenichite | Na0.8Ca0.4Cu0.4(Mg,Fe)3(AsO4)3 |
8.AC.10 | Varulite | NaCaMn2+Mn2+2(PO4)3 |
8.AC.10 | Ferrohagendorfite | NaCaFe2+Fe2+2(PO4)3 |
8.AC.10 | Bradaczekite | NaCu4(AsO4)3 |
8.AC.10 | Groatite | NaCaMn2(PO4)[PO3(OH)]2 |
8.AC.15 | Bobfergusonite | Na2Mn5FeAl(PO4)6 |
8.AC.15 | Ferrowyllieite | (Na,Ca,Mn)(Fe,Mn)(Fe,Fe,Mg)Al(PO4)3 |
8.AC.15 | Qingheiite | NaNaMn2+(MgAl)(PO4)3 |
8.AC.15 | Rosemaryite | (Na,Ca,Mn)(Mn,Fe2+)(Fe3+,Mg)Al(PO4)3 |
8.AC.15 | Wyllieite | (Na,Ca,Mn)(Mn,Fe)(Fe,Mg)Al(PO4)3 |
8.AC.15 | Ferrorosemaryite | ◻NaFe2+Fe3+Al(PO4)3 |
8.AC.15 | Ferroqingheiite | NaNaFe2+(MgAl)(PO4)3 |
8.AC.17 | Czochralskiite | Na4Ca3Mg(PO4)4 |
8.AC.18 | Manitobaite | Na16Mn2+ 25Al8(PO4)30 |
8.AC.20 | Marićite | NaFe2+(PO4) |
8.AC.25 | Berzeliite | (NaCa2)Mg2(AsO4)3 |
8.AC.25 | Manganberzeliite | (NaCa2)Mn2+2(AsO4)3 |
8.AC.25 | Palenzonaite | (NaCa2)Mn2+2(VO4)3 |
8.AC.25 | Schäferite | (NaCa2)Mg2(VO4)3 |
8.AC.25 | Hedegaardite | (Ca,Na)9(Ca,Na)Mg(PO4)6(PO3OH) |
8.AC.25 | Matyhite | Ca18(Ca,◻)2Fe2+2(PO4)14 |
8.AC.30 | Brianite | Na2CaMg(PO4)2 |
8.AC.35 | Vitusite-(Ce) | Na3(Ce,La,Nd)(PO4)2 |
8.AC.40 | Olgite | (Sr,Ba)(Na,Sr,REE)2Na(PO4)2 |
8.AC.40 | Bario-olgite | (Ba,Sr)(Na,Sr,REE)2Na(PO4)2 · |
8.AC.45 | Strontiowhitlockite | Sr9Mg(PO4)6(PO3OH) |
8.AC.45 | Whitlockite | Ca9Mg(PO4)6(PO3OH) |
8.AC.45 | Merrillite | Ca9NaMg(PO4)7 |
8.AC.45 | Tuite | Ca3(PO4)2 |
8.AC.45 | Ferromerrillite | Ca9NaFe2+(PO4)7 |
8.AC.47 | Iwateite | Na2BaMn(PO4)2 |
8.AC.47 | Yurmarinite | Na7(Fe3+,Mg,Cu)4(AsO4)6 |
8.AC.47 | Ozerovaite | Na2KAl3(AsO4)4 |
8.AC.47 | Anatolyite | Na6(Ca,Na)(Mg,Fe3+)3Al(AsO4)6 |
8.AC.47 | Pansnerite | K3Na3(Fe3+,Al)6(AsO4)8 |
8.AC.50 | Chladniite | Na3CaMg11(PO4)9 |
8.AC.50 | Fillowite | Na3CaMn2+11(PO4)9 |
8.AC.50 | Johnsomervilleite | Na3CaFe11(PO4)9 |
8.AC.50 | Galileiite | Na3Fe2+Fe2+11(PO4)9 |
8.AC.50 | Udinaite | NaMg4(VO4)3 |
8.AC.50 | Arsenudinaite | NaMg4(AsO4)3 |
8.AC.52 | Lasnierite | (Ca,Sr)(Mg,Fe2+)2Al(P[O,F]4)3 |
8.AC.55 | Pharmazincite | KZnAsO4 |
8.AC.57 | Zubkovaite | Ca3Cu3(AsO4)4 |
8.AC.60 | Kosnarite | KZr2(PO4)3 |
8.AC.65 | Panethite | (Na,Ca)2(Mg,Fe2+)2(PO4)2 |
8.AC.70 | Stanfieldite | Ca4Mg5(PO4)6 |
8.AC.75 | Ronneburgite | K2MnV4O12 |
8.AC.80 | Tillmannsite | Ag3Hg[(V,As)O4] |
8.AC.85 | Filatovite | K(Al,Zn)2(As,Si)2O8 |
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 Xenophyllite
mindat.org URL:
https://www.mindat.org/min-29097.html
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References for Xenophyllite
Reference List:
Britvin, Sergey N., Krivovichev, Sergey V., Obolonskaya, Edita V., Vlasenko, Natalia S., Bocharov, Vladimir N., Bryukhanova, Vera V. (2020) Xenophyllite, Na4Fe7(PO4)6, an Exotic Meteoritic Phosphate: New Mineral Description, Na-ions Mobility and Electrochemical Implications. Minerals, 10 (4) 300 doi:10.3390/min10040300
Localities for Xenophyllite
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).
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.
All localities listed without proper references should be considered as questionable.
Ukraine (TL) | |
| Britvin et al. (2020) |
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Augustinovka meteorite, Zaporizhzhia Raion, Zaporizhia Oblast, Ukraine