Fluormayenite
A valid IMA mineral species
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Formula:
Ca12Al14O32F2
Colour:
Colourless
Lustre:
Vitreous
Hardness:
5½ - 6
Crystal System:
Isometric
Member of:
Name:
For the composition and analogy to chlormayenite
The fluorine analogue of chlormayenite and vacancy analogue of fluorkyuygenite.
The structure is based on microporous tetrahedra framework, with 1/3 of the structural cages are occupied by fluorine.
The mayenite supergroup species (in general, coded as C12A7, or C12A7e-) show unique electrochemichal properties, with some anions in their structure (e.g., oxygen anions) migrating thorough the structure. As such, the mayenites behave as metals even though they are very non-metal in terms of general chemistry. Transitions seen in their structure may be related to superconducting. The mayenites represent a group of chemicals known as "salts of an electron", also known as electrides (e.g., Weber et al., 2021).
The structure is based on microporous tetrahedra framework, with 1/3 of the structural cages are occupied by fluorine.
The mayenite supergroup species (in general, coded as C12A7, or C12A7e-) show unique electrochemichal properties, with some anions in their structure (e.g., oxygen anions) migrating thorough the structure. As such, the mayenites behave as metals even though they are very non-metal in terms of general chemistry. Transitions seen in their structure may be related to superconducting. The mayenites represent a group of chemicals known as "salts of an electron", also known as electrides (e.g., Weber et al., 2021).
Unique Identifiers
Mindat ID:
43883
Long-form identifier:
mindat:1:1:43883:8
GUID
(UUID V4):
(UUID V4):
6c7d84b9-efe8-4026-ab67-941fd7a2beb4
IMA Classification of Fluormayenite
Approved
IMA Formula:
Ca12Al14O32[◻4F2]
First published:
2015
Type description reference:
Galuskin, Evgeny V., Gfeller, Frank, Armbruster, Thomas, Galuskina, Irina O., Vapnik, Yevgeny, Dulski, Mateusz, Murashko, Mikhail, Dzierżanowski, Piotr, Sharygin, Viktor V., Krivovichev, Sergey V., Wirth, Richard (2015) Mayenite supergroup, part III: Fluormayenite, Ca12Al14O32[□4F2], and fluorkyuygenite, Ca12Al14O32[(H2O)4F2], two new minerals from pyrometamorphic rocks of the Hatrurim Complex, South Levant. European Journal of Mineralogy, 27 (1) 123-136 doi:10.1127/ejm/2015/0027-2420
Classification of Fluormayenite
4.CC.10
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
C : Metal: Oxygen = 2: 3,3: 5, and similar
C : With large and medium-sized cations
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
C : Metal: Oxygen = 2: 3,3: 5, and similar
C : With large and medium-sized cations
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 |
|---|---|---|
| Fmy | 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 Fluormayenite
Vitreous
Transparency:
Transparent
Colour:
Colourless
Comment:
In places with greenish or yellowish tint
Streak:
White
Hardness:
5½ - 6 on Mohs scale
Hardness:
VHN50=771 kg/mm2 - Vickers
Optical Data of Fluormayenite
Type:
Isotropic
RI values:
n = 1.612(3)
Birefringence:
Isotropic minerals have no birefringence
Surface Relief:
Moderate
Chemistry of Fluormayenite
Mindat Formula:
Ca12Al14O32F2
Elements listed:
Common Impurities:
Fe(III),Na
Crystallography of Fluormayenite
Crystal System:
Isometric
Class (H-M):
4 3m - Hextetrahedral
Space Group:
I4 3d
Setting:
I4 3d
Cell Parameters:
a = 11.9894(2) Å
Unit Cell V:
1723.42 ų
Z:
2
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0019954 | Fluormayenite | Williams P P (1973) Refinement of the structure of 11CaO*7Al2O3*CaF2 Acta Crystallographica B29 1550-1551 |  | 1973 | synthetic | 0 | 293 |
| 0019956 | Fluormayenite | Yu Q, Sugita S, Feng X, Mi J (1997) On the preparation of single crystals of 11CaO*7Al2O3*CaF2 and the confirmation of its crystal structure Cement and Concrete Research 27 1439-1449 | 1997 | synthetic | 0 | 293 | |
| 0019955 | Fluormayenite | Costa U, Ballirano P (2000) Improved powder X-ray data for the cement phase Ca12Al14O32F2 (C11A7f) Powder Diffraction 15 56-61 | 2000 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.895 Å | (92) |
| 2.997 Å | (47) |
| 2.681 Å | (100) |
| 2.447 Å | (43) |
| 2.189 Å | (41) |
| 1.945 Å | (27) |
| 1.663 Å | (33) |
| 1.602 Å | (37) |
Comments:
From Type Description.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere | <0.6 |
| 51 : Pyrometamorphic minerals (see also #54 and #56) | <0.36 |
Type Occurrence of Fluormayenite
General Appearance of Type Material:
Crystals, usually < 20 μm in size.
Place of Conservation of Type Material:
Type material is deposited in the collections of the collections of the Museum of Natural History in Bern, Bernastrasse 5, CH-3005 Bern, Switzerland, catalogue number NMBE- 42094.
Geological Setting of Type Material:
Larnite-rich pyrometamorphic rocks.
Associated Minerals at Type Locality:
Reference:
Galuskin, E.V., Gfeller, F., Armbruster, T., Sharygin, V.V., Galuskina, I.O., Krivovichev, S.V., Vapnik, Y., Murashko, M., Dzierżanowski, P., Wirth, R. (2015) Mayenite supergroup, part III: Fluormayenite, Ca12Ala14aO32[□4F2], and fluorkyuygenite, Ca12Al14O32[(H2O)4F2], two new minerals from pyrometamorphic rocks of the Hatrurim Complex, South Levant. European Journal of Mineralogy: 27: 123-136.
Synonyms of Fluormayenite
Relationship of Fluormayenite to other Species
Member of:
Other Members of this group:
| Chlorkyuygenite | Ca12Al14O32[(H2O)4Cl2] | Iso. 4 3m : I4 3d |
| Chlormayenite | Ca12Al14O32[◻4Cl2] | Iso. 4 3m : I4 3d |
| Fluorkyuygenite | Ca12Al14O32[(H2O)4F2] | Iso. 4 3m : I4 3d |
Common Associates
Associated Minerals Based on Photo Data:
| 1 photo of Fluormayenite associated with Ariegilatite | BaCa12(SiO4)4(PO4)2F2O |
| 1 photo of Fluormayenite associated with Spurrite | Ca5(SiO4)2(CO3) |
| 1 photo of Fluormayenite associated with Stracherite | BaCa6(SiO4)2[(PO4)(CO3)]2F |
Related Minerals - Strunz-mindat Grouping
| 4.CC. | Xuite | Ca3Fe3+2[(AlO3(OH)]3 |
| 4.CC. | Allendeite | Sc4Zr3O12 |
| 4.CC. | Bitikleite | Ca3(Sb5+Sn4+)[AlO4]3 |
| 4.CC. | Yttriaite-(Y) | Y2O3 |
| 4.CC. | Chlorkyuygenite | Ca12Al14O32[(H2O)4Cl2] |
| 4.CC. | Anzaite-(Ce) | Ce3+ 4Fe2+Ti6O18 (OH)2 |
| 4.CC. | Heamanite-(Ce) | (K0.5Ce0.5)TiO3 |
| 4.CC. | Priscillagrewite-(Y) | (Ca2Y)Zr2(AlO4)3 |
| 4.CC. | Saranovskite | SrCaFe2+2(Cr4Ti2)Ti12O38 |
| 4.CC. | Botuobinskite | SrFe2+Mg2(Cr3+6Ti4+12)[O36(OH)2] |
| 4.CC. | Mirnyite | SrZr4+Mg2(Cr3+6Ti4+12)O38 |
| 4.CC. | Haitaite-(La) | LaU4+Fe3+2(Ti13Fe2+4Fe3+)O38 |
| 4.CC. | Shagamite | KFe11O17 |
| 4.CC.05 | Chrombismite | Bi3+16Cr6+O27 |
| 4.CC.10 | Freudenbergite | Na2(Ti,Fe)8O16 |
| 4.CC.10 | Fluorkyuygenite | Ca12Al14O32[(H2O)4F2] |
| 4.CC.15 | Grossite | CaAl4O7 |
| 4.CC.17 | Goldschmidtite | KNbO3 |
| 4.CC.20 | Chlormayenite | Ca12Al14O32[◻4Cl2] |
| 4.CC.20 | Unnamed (HBU UK-4) | NaFe2+Zn2(Ti,Fe3+,Nb)6Ti12O38 |
| 4.CC.20 | Paseroite | PbMn2+(Mn2+,Fe3+)2(V5+,Ti,◻)18O38 |
| 4.CC.20 | Mianningite | (◻,Pb,Ce,Na)(U4+,Mn,U6+)Fe3+2 (Ti,Fe3+)18O38 |
| 4.CC.20 | UM1987-03-O:FePbTiU | ~(U,Pb)(Ti,Fe3+,Fe2+,Mn)21O38 |
| 4.CC.22 | Kahlenbergite | KAl11O17 |
| 4.CC.22 | Gorerite | CaAlFe3+11O19 |
| 4.CC.25 | Yafsoanite | Ca3Te6+2(ZnO4)3 |
| 4.CC.25 | Nixonite | Na2Ti6O13 |
| 4.CC.30 | Latrappite | Ca2NbFe3+O6 |
| 4.CC.30 | Lueshite | NaNbO3 |
| 4.CC.30 | Natroniobite | NaNbO3 |
| 4.CC.30 | Perovskite | CaTiO3 |
| 4.CC.30 | Barioperovskite | BaTiO3 |
| 4.CC.30 | Lakargiite | Ca(Zr,Sn,Ti)O3 |
| 4.CC.30 | Megawite | CaSnO3 |
| 4.CC.32 | Usturite | Ca3(Sb5+Zr)[Fe3+O4]3 |
| 4.CC.32 | Elbrusite | Ca3(U6+0.5Zr1.5)[Fe3+O4]3 |
| 4.CC.32 | Dzhuluite | Ca3(Sb5+Sn4+)[Fe3+O4]3 |
| 4.CC.32 | Monteneveite | Ca3Sb5+2(Fe3+2Fe2+)O12 |
| 4.CC.35 | Loparite-(Ce) | (Na,REE)2Ti2O6 |
| 4.CC.35 | Macedonite | PbTiO3 |
| 4.CC.35 | Tausonite | SrTiO3 |
| 4.CC.35 | Isolueshite | (Na,La)NbO3 |
| 4.CC.35 | Panguite | (Ti,Al,Sc,Mg,Zr,Ca)1.8O3 |
| 4.CC.37 | Pauloabibite | NaNbO3 |
| 4.CC.40 | Crichtonite | Sr(Mn,Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH)38 |
| 4.CC.40 | Davidite-(Ce) | Ce(Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH,F)38 |
| 4.CC.40 | Davidite-(La) | La(Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH,F)38 |
| 4.CC.40 | Davidite-(Y) | (La,Ce,Na,Ca,Pb)(Y,Fe2+,◻)(Fe2+,Mn2+)2(Ti,Fe3+,Nb,Zr)18O38 (hypothetical) |
| 4.CC.40 | Landauite | NaMnZn2(Ti,Fe)6Ti12O38 |
| 4.CC.40 | Lindsleyite | (Ba,Sr)(Zr,Ca)(Fe,Mg)2(Ti,Cr,Fe)18O38 |
| 4.CC.40 | Loveringite | (Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38 |
| 4.CC.40 | Mathiasite | (Mg,Cr,Fe,Ca,K)2(Ti,Zr,Cr,Fe)5O12 |
| 4.CC.40 | Senaite | Pb(Mn,Y,U)(Fe,Zn)2(Ti,Fe,Cr,V)18(O,OH)38 |
| 4.CC.40 | Uhligite | Ca3(Ti,Al,Zr)9O20 ? |
| 4.CC.40 | Dessauite-(Y) | (Sr,Pb)(Y,U)(Ti,Fe3+)20O38 |
| 4.CC.40 | Cleusonite | (Pb,Sr)(U4+,U6+)(Fe2+,Zn)2(Ti,Fe2+,Fe3+)18(O,OH)38 |
| 4.CC.40 | Gramaccioliite-(Y) | (Pb,Sr)(Y,Mn)Fe3+2(Ti,Fe3+)18O38 |
| 4.CC.45 | Diaoyudaoite | NaAl11O17 |
| 4.CC.45 | Hawthorneite | BaMgTi3Cr4Fe2+2Fe3+2O19 |
| 4.CC.45 | Hibonite | CaAl12O19 |
| 4.CC.45 | Lindqvistite | Pb2Mn2+Fe16O27 |
| 4.CC.45 | Magnetoplumbite | (Pb,Mn)(Fe,Mn)12O19 |
| 4.CC.45 | Plumboferrite | Pb2(Fe3+,Mn2+,Mg)11O19 |
| 4.CC.45 | Yimengite | K(Cr,Ti,Fe,Mg)12O19 |
| 4.CC.45 | Haggertyite | BaFe2+4Fe3+2Ti5MgO19 |
| 4.CC.45 | Nežilovite | PbZn2Mn4+2Fe3+8O19 |
| 4.CC.45 | Batiferrite | BaTi2Fe3+8Fe2+2O19 |
| 4.CC.45 | Chihuahuaite | FeAl12O19 |
| 4.CC.45 | Barioferrite | BaFe3+12O19 |
| 4.CC.45 | Kangite | (Sc,Ti,Al,Zr,Mg,Ca,◻)2O3 |
| 4.CC.45 | Mizraite-(Ce) | Ce(Al11Mg)O19 |
| 4.CC.50 | Jeppeite | (K,Ba)2(Ti,Fe)6O13 |
| 4.CC.55 | Zenzénite | Pb3Fe3+4Mn4+3O15 |
| 4.CC.60 | Mengxianminite (of Huang et al.) | (Ca,Na)3(Fe,Mn)2Mg2(Sn,Zn)5Al8O29 |
Fluorescence of Fluormayenite
Does not show fluorescence
Other Information
Thermal Behaviour:
molecular water is released at 400oC
Notes:
Raman bands [cm-1]: 320 (ν2 AlO4), 520 (ν4 AlO4); 700, 770 (ν1 AlO4)
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 Fluormayenite
mindat.org URL:
https://www.mindat.org/min-43883.html
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References for Fluormayenite
Reference List:
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2013) New minerals and nomenclature modifications approved in 2013. CNMNC Newsletter No 16. Mineralogical Magazine, 77 (6) 2695-2709 doi:10.1180/minmag.2013.077.6.01
Galuskin, Evgeny V., Gfeller, Frank, Armbruster, Thomas, Galuskina, Irina O., Vapnik, Yevgeny, Dulski, Mateusz, Murashko, Mikhail, Dzierżanowski, Piotr, Sharygin, Viktor V., Krivovichev, Sergey V., Wirth, Richard (2015) Mayenite supergroup, part III: Fluormayenite, Ca12Al14O32[□4F2], and fluorkyuygenite, Ca12Al14O32[(H2O)4F2], two new minerals from pyrometamorphic rocks of the Hatrurim Complex, South Levant. European Journal of Mineralogy, 27 (1) 123-136 doi:10.1127/ejm/2015/0027-2420
Localities for Fluormayenite
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.
Israel | |
| doi:10.3390/min8030109. +1 other reference |
| Galuskin +1 other reference | |
Jordan | |
| Khoury et al. (2015) +2 other references |
| Sokol +10 other references | |
| Galuskina et al. (2019) | |
Middle East | |
| Vapnik et al. (2014) | |
Palestine | |
| Galuskina et al. (2019) |
| Williams et al. (2013) +1 other reference |
Russia | |
| Ерохин Ю.В. |
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