Fluorcalciopyrochlore
A valid IMA mineral species
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About Fluorcalciopyrochlore
Formula:
(Ca,Na)2(Nb,Ti)2O6F
Colour:
Brownish-yellow to reddish-orange
Lustre:
Adamantine, Greasy
Hardness:
5
Specific Gravity:
4.34 (Calculated)
Crystal System:
Isometric
Member of:
Name:
For the chemical composition and relation to pyrochlore (now a generic name).
This page provides mineralogical data about Fluorcalciopyrochlore.
Unique Identifiers
Mindat ID:
40341
Long-form identifier:
mindat:1:1:40341:6
IMA Classification of Fluorcalciopyrochlore
Classification of Fluorcalciopyrochlore
4.DH.15
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
H : With large (+- medium-sized) cations; sheets of edge-sharing octahedra
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
H : With large (+- medium-sized) cations; sheets of edge-sharing octahedra
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 |
|---|---|---|
| Fcpcl | 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 Fluorcalciopyrochlore
Adamantine, Greasy
Transparency:
Transparent, Translucent
Comment:
On fractured surfaces
Colour:
Brownish-yellow to reddish-orange
Streak:
Light yellow
Hardness:
5 on Mohs scale
Cleavage:
None Observed
Parting:
None observed
Fracture:
Conchoidal
Density:
4.34 g/cm3 (Calculated)
Chemistry of Fluorcalciopyrochlore
Mindat Formula:
(Ca,Na)2(Nb,Ti)2O6F
Element Weights:
Crystallography of Fluorcalciopyrochlore
Crystal System:
Isometric
Cell Parameters:
a = 10.4164(9) Å
Unit Cell V:
1,130.19 ų (Calculated from Unit Cell)
Morphology:
As octahedra {111}, dodecahedra {110}, and cubes {100}, or combinations thereof, and generally range in size from 0.01 to 0.3 mm
Comment:
Fd3¯ m
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 6.041 Å | (9) |
| 3.018 Å | (100) |
| 2.613 Å | (17) |
| 1.844 Å | (29) |
| 1.571 Å | (15) |
| 1.504 Å | (2) |
| 1.303 Å | (2) |
| 1.197 Å | (2) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 34 : Complex granite pegmatites | |
| 35 : Ultra-alkali and agpaitic igneous rocks |
Type Occurrence of Fluorcalciopyrochlore
General Appearance of Type Material:
As octahedra {111}, dodecahedra {110}, and cubes {100}, or combinations thereof, and generally range in size from 0.01 to 0.3 mm
Place of Conservation of Type Material:
In the collections of the Laboratory of Crystal Structure, Scientific Research Institute, China University of Geosciences, Beijing, 100083, China, catalogue number XI-81
Geological Setting of Type Material:
A dolomite-type niobium rare-earth ore deposit.
Associated Minerals at Type Locality:
Synonyms of Fluorcalciopyrochlore
Calciopyrochlore (in part)
Other Language Names for Fluorcalciopyrochlore
Dutch:Fluorcalciopyrochloor
German:Fluorcalciopyrochlor
Relationship of Fluorcalciopyrochlore to other Species
Member of:
Other Members of Pyrochlore Group:
| Cesiokenopyrochlore | ◻Nb2(O,OH)6(Cs,◻) | Iso. m3m(4/m32/m) : Fd3m |
| 'Fluorhydropyrochlore' | A possible new species (See discussion in Atencio et al. | |
| 'Fluorkenopyrochlore' | (◻,Sr,Ce,Ca,Na)2(Nb,Ti)2O6F | |
| Fluornatropyrochlore | (Na,Pb,Ca,REE,U)2Nb2O6F | Iso. m3m(4/m32/m) |
| 'Fluorplumbopyrochlore' | (Pb,Y,Th,U,Na,Ca)2-x(Nb,Ti)2O6F | Iso. |
| 'Fluorstrontiopyrochlore' | (Sr,◻)2Nb2(O,OH)6F | |
| Hydrokenopyrochlore | (◻,x)2Nb2O6(H2O,Cs) | Iso. m3m(4/m32/m) : Fd3m |
| Hydropyrochlore | (H2O,◻)2Nb2(O,OH)6(H2O) | Iso. m3m(4/m32/m) : Fd3m |
| Hydroxycalciopyrochlore | (Ca,Na,U,◻)2(Nb,Ti)2O6(OH) | Iso. m3m(4/m32/m) : Fd3m |
| Hydroxykenopyrochlore | (◻,Ce,Ba)2(Nb,Ti)2O6(OH,F) | Iso. m3m(4/m32/m) : Fd3m |
| Hydroxymanganopyrochlore | (Mn2+,Th,Na,Ca,REE)2(Nb,Ti)2O6(OH) | Iso. m3(2/m3) |
| Hydroxynatropyrochlore | (Na,Ca,Ce)2Nb2O6(OH) | Iso. m3m(4/m32/m) : Fd3m |
| Hydroxyplumbopyrochlore | (Pb1.5◻0.5)Nb2O6(OH) | Iso. m3m(4/m32/m) : Fd3m |
| 'Kenoplumbopyrochlore' | (Pb,◻)Nb2O6(◻,O) | |
| Oxycalciopyrochlore | Ca2Nb2O6O | Iso. m3m(4/m32/m) : Fd3m |
| 'Oxynatropyrochlore' | (Na,Ca,U)2Nb2O6(O,OH) | |
| Oxyplumbopyrochlore | Pb2Nb2O6O | Iso. m3m(4/m32/m) : Fd3m |
| 'Oxyyttropyrochlore-(Y)' | (Y,◻)2Nb2O6O | |
| 'Strontiopyrochlore (of Hogarth 1977)' | (Sr,Ce,Ca)0.66(Nb,Fe)2(O,OH)7 | |
| 'Unnamed (Sb-analogue of Hydroxymanganopyrochlor)' | (Mn,Ca,Y)2(Sb,Ti)2O6(OH) |
Common Associates
Associations Based on Photo Data:
| 6 photos of Fluorcalciopyrochlore associated with Aegirine | NaFe3+Si2O6 |
| 5 photos of Fluorcalciopyrochlore associated with Microcline | K(AlSi3O8) |
| 4 photos of Fluorcalciopyrochlore associated with Zircon | Zr(SiO4) |
| 4 photos of Fluorcalciopyrochlore associated with Albite | Na(AlSi3O8) |
| 3 photos of Fluorcalciopyrochlore associated with Epididymite | Na2Be2Si6O15 · H2O |
| 3 photos of Fluorcalciopyrochlore associated with Hydroxycalciopyrochlore | (Ca,Na,U,◻)2(Nb,Ti)2O6(OH) |
| 2 photos of Fluorcalciopyrochlore associated with Magnetite | Fe2+Fe3+2O4 |
| 2 photos of Fluorcalciopyrochlore associated with 'Apatite' | Ca5(PO4)3A |
| 2 photos of Fluorcalciopyrochlore associated with Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| 2 photos of Fluorcalciopyrochlore associated with Annite | KFe2+3(AlSi3O10)(OH)2 |
Related Minerals - Strunz-mindat Grouping
| 4.DH. | Cesiokenopyrochlore | ◻Nb2(O,OH)6(Cs,◻) |
| 4.DH. | Roméite Group | A2(Sb5+)2O6Z |
| 4.DH. | Oxyplumboroméite | Pb2Sb2O6O |
| 4.DH. | Fluornatropyrochlore | (Na,Pb,Ca,REE,U)2Nb2O6F |
| 4.DH. | Hydroxykenomicrolite | (◻,Na,Sb3+)2Ta2O6(OH,Cs) |
| 4.DH. | 'Fluornatroroméite' | (Na,Ca)2Sb2(O,OH)6F |
| 4.DH. | Oxyyttrobetafite-(Y) | Y2Ti2O6O |
| 4.DH.05 | Thorutite | (Th,U,Ca)Ti2(O,OH)6 |
| 4.DH.05 | Orthobrannerite | U4+U6+Ti4O12(OH)2 |
| 4.DH.05 | Brannerite | UTi2O6 |
| 4.DH.10 | Kassite | CaTi2O4(OH)2 |
| 4.DH.10 | Lucasite-(La) | |
| 4.DH.10 | Lucasite-(Ce) | CeTi2(O,OH)6 |
| 4.DH.15 | 'Fluorhydropyrochlore' | |
| 4.DH.15 | Hydrokenoelsmoreite | ◻2W2O6(H2O) |
| 4.DH.15 | 'Hydroxynatromicrolite' | (Na,Bi3+,◻)2Ta2O6(OH) |
| 4.DH.15 | Hydroplumboelsmoreite | (Pb,◻)(W,Fe3+)2O6 · H2O |
| 4.DH.15 | Hydropyrochlore | (H2O,◻)2Nb2(O,OH)6(H2O) |
| 4.DH.15 | 'Unnamed (Sb-analogue of Hydroxymanganopyrochlor)' | (Mn,Ca,Y)2(Sb,Ti)2O6(OH) |
| 4.DH.15 | Hydroxynatropyrochlore | (Na,Ca,Ce)2Nb2O6(OH) |
| 4.DH.15 | Hydrokenopyrochlore | (◻,x)2Nb2O6(H2O,Cs) |
| 4.DH.15 | Oxybismutomicrolite | (Bi1.33◻0.67)Σ2Ta2O6O |
| 4.DH.15 | Kenomicrolite | ◻2Ta2[O4(OH)2]◻ |
| 4.DH.15 | Fluornatromicrolite | (Na1.5Bi0.5)Ta2O6F |
| 4.DH.15 | 'Oxynatropyrochlore' | (Na,Ca,U)2Nb2O6(O,OH) |
| 4.DH.15 | Hydroxycalciopyrochlore | (Ca,Na,U,◻)2(Nb,Ti)2O6(OH) |
| 4.DH.15 | Oxycalciopyrochlore | Ca2Nb2O6O |
| 4.DH.15 | 'Fluorstrontiopyrochlore' | (Sr,◻)2Nb2(O,OH)6F |
| 4.DH.15 | Oxyplumbopyrochlore | Pb2Nb2O6O |
| 4.DH.15 | 'Fluorplumbopyrochlore' | (Pb,Y,Th,U,Na,Ca)2-x(Nb,Ti)2O6F |
| 4.DH.15 | 'Bismutomicrolite (of Hogarth 1977)' | |
| 4.DH.15 | 'Bismutopyrochlore (of Chukanov et al.)' | (Bi,Ca,U,Pb)2-xNb2(O,OH)6(OH) |
| 4.DH.15 | 'Kenoplumbopyrochlore' | (Pb,◻)Nb2O6(◻,O) |
| 4.DH.15 | Hydroxyplumbopyrochlore | (Pb1.5◻0.5)Nb2O6(OH) |
| 4.DH.15 | 'Stibiomicrolite (of Groat et al.)' | |
| 4.DH.15 | 'Oxyyttropyrochlore-(Y)' | (Y,◻)2Nb2O6O |
| 4.DH.15 | 'Fluorkenopyrochlore' | (◻,Sr,Ce,Ca,Na)2(Nb,Ti)2O6F |
| 4.DH.15 | Hydroxycalciomicrolite | Ca1.5Ta2O6(OH) |
| 4.DH.15 | 'Strontiopyrochlore (of Hogarth 1977)' | (Sr,Ce,Ca)0.66(Nb,Fe)2(O,OH)7 |
| 4.DH.15 va | 'Alumotungstite' | ◻2W2O6(H2O) |
| 4.DH.15 | 'Oxycalciobetafite' | Ca2(Ti,Nb)2O6O |
| 4.DH.15 | 'Oxyuranobetafite' | (U,Ca,◻)2(Ti,Nb)2O6O |
| 4.DH.15 | Fluorcalciomicrolite | (Ca,Na)2(Ta,Nb)2O6F |
| 4.DH.15 | Oxycalciomicrolite | Ca2Ta2O6O |
| 4.DH.15 | Oxystannomicrolite | Sn2Ta2O6O |
| 4.DH.15 | Kenoplumbomicrolite | (Pb,◻)2Ta2O6(◻,OH,O) |
| 4.DH.15 | Oxynatromicrolite | (Na,Ca,U)2(Ta,Nb)2O6(O,F) |
| 4.DH.15 | Oxystibiomicrolite | (Sb3+,Ca)2Ta2O6O |
| 4.DH.15 | 'Hydromicrolite' | (H2O,◻)2Ta2(O,OH)6(H2O) |
| 4.DH.15 | 'Plumbomicrolite (of Hogarth 1977)' | |
| 4.DH.15 | Hydrokenomicrolite | (◻,H2O)2Ta2(O,OH)6(H2O) |
| 4.DH.15 | Hydroxykenoelsmoreite | (◻,Pb)2(W,Fe3+,Al)2(O,OH)6(OH) |
| 4.DH.15 va | 'Yttromicrolite (of Hogarth)' | (Ca,Y3+,U,Na)2-x(Ta,Nb,Ti,Fe3+)2O7 |
| 4.DH.15 | Hydroxykenopyrochlore | (◻,Ce,Ba)2(Nb,Ti)2O6(OH,F) |
| 4.DH.15 | Hydroxymanganopyrochlore | (Mn2+,Th,Na,Ca,REE)2(Nb,Ti)2O6(OH) |
| 4.DH.20 | 'Cuproroméite' | Cu2Sb2(O,OH)7 |
| 4.DH.20 | Hydroxycalcioroméite | (Ca,Sb3+)2(Sb5+,Ti)2O6(OH) |
| 4.DH.20 | Bindheimite | Pb2Sb2O6O |
| 4.DH.20 | Hydroxyferroroméite | (Fe2+1.5◻0.5)Sb5+2O6(OH) |
| 4.DH.20 | Fluorcalcioroméite | (Ca,Na,◻)2Sb5+2(O,OH)6F |
| 4.DH.20 | Oxycalcioroméite | Ca2Sb2O6O |
| 4.DH.20 | Stetefeldtite | Ag2Sb2(O,OH)7 |
| 4.DH.20 | Stibiconite | Sb3+Sb5+2O6(OH) |
| 4.DH.20 | Monimolite | Pb2Sb5+2O7 |
| 4.DH.25 | Rosiaite | PbSb5+2O6 |
| 4.DH.30 | Stefanweissite | (Ca,REE)2Zr2(Nb,Ti)(Ti,Nb)2Fe2+O14 |
| 4.DH.30 | Zirconolite | CaZrTi2O7 |
| 4.DH.30 | Laachite | (Ca,Mn)2Zr2Nb2TiFeO14 |
| 4.DH.30 | Nöggerathite-(Ce) | (Ce,Ca)2Zr2(Nb,Ti)(Ti,Nb)2Fe2+O14 |
| 4.DH.35 | Liandratite | U(Nb,Ta)2O8 |
| 4.DH.35 | Petscheckite | UFe(Nb,Ta)2O8 |
| 4.DH.40 | Ingersonite | Ca3Mn2+Sb5+4O14 |
| 4.DH.45 | Pittongite | Na0.22(W,Fe3+)(O,OH)3 · 0.44H2O |
| 4.DH.50 | Tazzoliite | Ba4-xNaxTi2Nb3SiO17[PO2(OH)2]x(OH)(1-2x) |
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 Fluorcalciopyrochlore
mindat.org URL:
https://www.mindat.org/min-40341.html
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References for Fluorcalciopyrochlore
Reference List:
Atencio, D., Andrade, M. B., Christy, A. G., Giere, R., Kartashov, P. M. (2010) The pyrochlore supergroup of minerals: nomenclature. The Canadian Mineralogist, 48 (3) 673-698 doi:10.3749/canmin.48.3.673
Christy, A. G., Atencio, D. (2013) Clarification of status of species in the pyrochlore supergroup. Mineralogical Magazine, 77 (1) 13-20 doi:10.1180/minmag.2013.077.1.02
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2013) New minerals and nomenclature modifications approved in 2013. CNMNC Newsletter No.17. Mineralogical Magazine, 77 (7) 2997-3005 doi:10.1180/minmag.2013.077.7.09
Localities for Fluorcalciopyrochlore
Showing 38 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.
Angola | |
| Amores-Casals et al. (2019) |
Canada | |
| Hogarth (1961) |
| Hogarth (1961) |
| RRUFF ID: R110198 | |
| Bideaux (1997) | |
| Chao |
| Hogarth (1961) |
| GROULIER et al. (2014) |
China (TL) | |
| Williams et al. (2013) +1 other reference |
| Xue et al. (2021) |
| Xue et al. (2021) | |
| Sun et al. (2022) |
Czech Republic | |
| Matýsek et al. (2025) |
| Matýsek et al. (2025) |
Finland | |
| Pavel M. Kartashov analytical data 2019 |
France | |
| Wang et al. (1994) |
Germany | |
| Färber (n.d.) |
| Blaß et al. (2015) |
| EDXS analyses (Ca1.08Na0.76) |
Greenland | |
| Bonazzi (2006) |
India | |
| Magna et al. (2020) |
Italy | |
| Sun et al. (2020) +1 other reference |
Madagascar | |
| Estrade (2014) |
| Université de Toulouse +1 other reference | |
Morocco | |
| De Ascenção Guedes (2023) |
Norway | |
| Piilonen et al. (2013) |
Portugal | |
| Samples collected by Luigi Chiappino ... +1 other reference |
Russia | |
| Pavel M. Kartashov (n.d.) |
| Popova et al. (2018) +1 other reference |
| Попова et al. (2019) |
| Pavel M. Kartashov analytical data of ... | |
| Sharygin +12 other references |
| RRUFF ID: R060288 |
| Ivanyuk et al. (2018) |
| Kozlov +6 other references |
| Yakovenchuk et al. (2019) | |
| Doroshkevich et al. (2022) |
| Doroshkevich et al. (2016) +1 other reference |
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Karavai Mt, Vishnevye Mountains, Chelyabinsk Oblast, Russia