Fluornatropyrochlore
A valid IMA mineral species
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About Fluornatropyrochlore
Formula:
(Na,Pb,Ca,REE,U)2Nb2O6F
Colour:
Brownish yellow to reddish orange
Lustre:
Adamantine
Hardness:
4 - 4½
Specific Gravity:
5.275 (Calculated)
Crystal System:
Isometric
Member of:
Name:
For the chemical composition and relation to pyrochlore.
Note: The original description (Yin et al., 2015) gives Boziguoer intrusion, Baicheng County, Akesu, Xinjiang Autonomous Region, China as type locality, but the CNMNC Newsletter No. 17 (October 2013) list gave Maoniuping rare earth deposit, Mianning County, Sichuan Province, China.
Unique Identifiers
Mindat ID:
40337
Long-form identifier:
mindat:1:1:40337:3
IMA Classification of Fluornatropyrochlore
Approved
IMA Formula:
(Na,Pb2+,Ca,REE3+,U6+)2Nb5+2O6F
Approval year:
2013
First published:
2015
Classification of Fluornatropyrochlore
4.DH.
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 |
|---|---|---|
| Fnpcl | 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 Fluornatropyrochlore
Adamantine
Transparency:
Transparent, Translucent
Colour:
Brownish yellow to reddish orange
Streak:
Light yellow
Hardness:
4 - 4½ on Mohs scale
Tenacity:
Brittle
Density:
5.275 g/cm3 (Calculated)
Optical Data of Fluornatropyrochlore
Type:
Isotropic
RI values:
n = 2.10(5)
Surface Relief:
Very High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Chemistry of Fluornatropyrochlore
Mindat Formula:
(Na,Pb,Ca,REE,U)2Nb2O6F
Element Weights:
Crystallography of Fluornatropyrochlore
Crystal System:
Isometric
Class (H-M):
m3m(4/m32/m) - Hexoctahedral
Cell Parameters:
a = 10.5053(10) Å
Unit Cell V:
1159.4 ų
Z:
8
Morphology:
anhedral and subhedral grains;
Comment:
Fd3¯ m
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 6.074 Å | (3) |
| 3.042 Å | (100) |
| 2.628 Å | (38) |
| 1.857 Å | (34) |
| 1.582 Å | (15) |
| 1.515 Å | (4) |
| 1.314 Å | (2) |
| 1.205 Å | (3) |
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 Fluornatropyrochlore
General Appearance of Type Material:
Anhedral crystals, rarely as subhedral grains, with a grain size of 0.02 to 0.25 mm.
Place of Conservation of Type Material:
Holotype in the Geological Museum of China, Beijing,China, sample number M12183.
Geological Setting of Type Material:
Alkali granite
Associated Minerals at Type Locality:
Synonyms of Fluornatropyrochlore
Other Language Names for Fluornatropyrochlore
Dutch:Fluornatropyrochloor
German:Fluornatropyrochlor
Relationship of Fluornatropyrochlore to other Species
Member of:
Other Members of Pyrochlore Group:
| Cesiokenopyrochlore | ◻Nb2(O,OH)6(Cs,◻) | Iso. m3m(4/m32/m) : Fd3m |
| Fluorcalciopyrochlore | (Ca,Na)2(Nb,Ti)2O6F | Iso. |
| 'Fluorhydropyrochlore' | A possible new species (See discussion in Atencio et al. | |
| 'Fluorkenopyrochlore' | (◻,Sr,Ce,Ca,Na)2(Nb,Ti)2O6F | |
| '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:
| 28 photos of Fluornatropyrochlore associated with Zircon | Zr(SiO4) |
| 23 photos of Fluornatropyrochlore associated with Ferro-katophorite | Na(CaNa)(Fe2+4Al)(AlSi7O22)(OH)2 |
| 13 photos of Fluornatropyrochlore associated with Aegirine | NaFe3+Si2O6 |
| 8 photos of Fluornatropyrochlore associated with Astrophyllite | K2NaFe2+7Ti2[Si4O12]2O2(OH)4F |
| 6 photos of Fluornatropyrochlore associated with Titanite | CaTiO(SiO4) |
| 5 photos of Fluornatropyrochlore associated with Ilmenite | Fe2+TiO3 |
| 5 photos of Fluornatropyrochlore associated with Fluorapatite | Ca5(PO4)3F |
| 4 photos of Fluornatropyrochlore associated with Sanidine | K(AlSi3O8) |
| 4 photos of Fluornatropyrochlore associated with Bastnäsite-(Ce) | Ce(CO3)F |
| 4 photos of Fluornatropyrochlore associated with Hematite | Fe2O3 |
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. | 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 | Fluorcalciopyrochlore | (Ca,Na)2(Nb,Ti)2O6F |
| 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) |
Fluorescence of Fluornatropyrochlore
Non-fluorescent
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 Fluornatropyrochlore
mindat.org URL:
https://www.mindat.org/min-40337.html
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References for Fluornatropyrochlore
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 Fluornatropyrochlore
Showing 23 localities.
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 | |
| Gonçalves +1 other reference |
Canada | |
| MÖLLER (2016) |
| Chao |
| Dupuis et al. (2013) |
China | |
| Xue et al. (2021) |
| Xue et al. (2021) | |
| Williams et al. (2013) |
| Yin et al. (2015) +1 other reference |
France | |
| JV COUREAU collection - Georges FAVREAU ... |
Germany | |
| Christophe Boutry collection +1 other reference |
| in the collection of Christof Schäfer |
Hungary | |
| collector: Csaba Papp |
| www.geomania.hu +1 other reference | |
Madagascar | |
| Université de Toulouse +1 other reference |
Mongolia | |
| Pavel M. Kartashov (n.d.) +1 other reference |
Norway | |
| Canadian Museum of Nature collection |
Portugal | |
| Lavarde et al. (2019) |
| in the collection of Christof Schäfer | |
| Cámara et al. (2017) |
| Alves (n.d.) |
Russia | |
| Ivanyuk et al. (2018) |
| Starikova et al. (2019) |
Tajikistan | |
| Gerhard Möhn Collection. Identified by ... |
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