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Fluornatropyrochlore

A valid IMA mineral species
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About FluornatropyrochloreHide

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
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 IdentifiersHide

Mindat ID:
40337
Long-form identifier:
mindat:1:1:40337:3

IMA Classification of FluornatropyrochloreHide

Approved
IMA Formula:
(Na,Pb2+,Ca,REE3+,U6+)2Nb5+2O6F
Approval year:
2013
First published:
2015

Classification of FluornatropyrochloreHide

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

Mineral SymbolsHide

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

SymbolSourceReference for Standard
FnpclIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of FluornatropyrochloreHide

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 FluornatropyrochloreHide

Type:
Isotropic
RI values:
n = 2.10(5)
Surface Relief:
Very High (positive)
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 FluornatropyrochloreHide

Mindat Formula:
(Na,Pb,Ca,REE,U)2Nb2O6F
Element Weights:
Element% weight
Nb53.581 %
O27.682 %
Na13.259 %
F5.478 %

Calculated from ideal end-member formula.

Crystallography of FluornatropyrochloreHide

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 DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
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 EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 4b: Highly evolved igneous rocks>3.0
34 : Complex granite pegmatites
35 : Ultra-alkali and agpaitic igneous rocks

Type Occurrence of FluornatropyrochloreHide

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 FluornatropyrochloreHide

Other Language Names for FluornatropyrochloreHide

Relationship of Fluornatropyrochlore to other SpeciesHide

Other Members of Pyrochlore Group:
Cesiokenopyrochlore◻Nb2(O,OH)6(Cs,◻) Iso. m3m(4/m32/m) : Fd3m
Fluorcalciopyrochlore(Ca,Na)2(Nb,Ti)2O6FIso.
'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)2O6FIso.
'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 (Pb1.50.5)Nb2O6(OH)Iso. m3m(4/m32/m) : Fd3m
'Kenoplumbopyrochlore'(Pb,◻)Nb2O6(◻,O)
OxycalciopyrochloreCa2Nb2O6OIso. m3m(4/m32/m) : Fd3m
'Oxynatropyrochlore'(Na,Ca,U)2Nb2O6(O,OH)
OxyplumbopyrochlorePb2Nb2O6OIso. 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 AssociatesHide

Associations Based on Photo Data:
28 photos of Fluornatropyrochlore associated with ZirconZr(SiO4)
23 photos of Fluornatropyrochlore associated with Ferro-katophoriteNa(CaNa)(Fe2+4Al)(AlSi7O22)(OH)2
13 photos of Fluornatropyrochlore associated with AegirineNaFe3+Si2O6
8 photos of Fluornatropyrochlore associated with AstrophylliteK2NaFe2+7Ti2[Si4O12]2O2(OH)4F
6 photos of Fluornatropyrochlore associated with TitaniteCaTiO(SiO4)
5 photos of Fluornatropyrochlore associated with IlmeniteFe2+TiO3
5 photos of Fluornatropyrochlore associated with FluorapatiteCa5(PO4)3F
4 photos of Fluornatropyrochlore associated with SanidineK(AlSi3O8)
4 photos of Fluornatropyrochlore associated with Bastnäsite-(Ce)Ce(CO3)F
4 photos of Fluornatropyrochlore associated with HematiteFe2O3

Related Minerals - Strunz-mindat GroupingHide

4.DH.Cesiokenopyrochlore◻Nb2(O,OH)6(Cs,◻) Iso. m3m(4/m32/m) : Fd3m
4.DH.Roméite GroupA2(Sb5+)2O6Z
4.DH.OxyplumboroméitePb2Sb2O6OIso. m3m(4/m32/m) : Fd3m
4.DH.Hydroxykenomicrolite(◻,Na,Sb3+)2Ta2O6(OH,Cs)Iso. m3m(4/m32/m) : Fd3m
4.DH.'Fluornatroroméite'(Na,Ca)2Sb2(O,OH)6F
4.DH.Oxyyttrobetafite-(Y)Y2Ti2O6OIso. m3m(4/m32/m) : Fd3m
4.DH.05Thorutite(Th,U,Ca)Ti2(O,OH)6Mon.
4.DH.05OrthobranneriteU4+U6+Ti4O12(OH)2Orth.
4.DH.05BranneriteUTi2O6Mon. 2/m : B2/m
4.DH.10KassiteCaTi2O4(OH)2Mon. 2/m : P21/b
4.DH.10Lucasite-(La)Mon. 2 : B2
4.DH.10Lucasite-(Ce)CeTi2(O,OH)6Mon.
4.DH.15'Fluorhydropyrochlore'
4.DH.15Hydrokenoelsmoreite2W2O6(H2O)Iso. m3m(4/m32/m) : Fd3m
4.DH.15'Hydroxynatromicrolite'(Na,Bi3+,◻)2Ta2O6(OH)Iso. m3m(4/m32/m) : Fd3m
4.DH.15Hydroplumboelsmoreite(Pb,◻)(W,Fe3+)2O6 · H2OIso. m3m(4/m32/m) : Fd3m
4.DH.15Hydropyrochlore(H2O,◻)2Nb2(O,OH)6(H2O)Iso. m3m(4/m32/m) : Fd3m
4.DH.15'Unnamed (Sb-analogue of Hydroxymanganopyrochlor)'(Mn,Ca,Y)2(Sb,Ti)2O6(OH)
4.DH.15Hydroxynatropyrochlore(Na,Ca,Ce)2Nb2O6(OH)Iso. m3m(4/m32/m) : Fd3m
4.DH.15Hydrokenopyrochlore(◻,x)2Nb2O6(H2O,Cs)Iso. m3m(4/m32/m) : Fd3m
4.DH.15Oxybismutomicrolite(Bi1.330.67)Σ2Ta2O6OIso. m3m(4/m32/m) : Fd3m
4.DH.15Kenomicrolite2Ta2[O4(OH)2]◻Iso. m3m(4/m32/m) : Fd3m
4.DH.15Fluornatromicrolite(Na1.5Bi0.5)Ta2O6FIso. m3m(4/m32/m) : Fd3m
4.DH.15'Oxynatropyrochlore'(Na,Ca,U)2Nb2O6(O,OH)
4.DH.15Hydroxycalciopyrochlore(Ca,Na,U,◻)2(Nb,Ti)2O6(OH)Iso. m3m(4/m32/m) : Fd3m
4.DH.15Fluorcalciopyrochlore(Ca,Na)2(Nb,Ti)2O6FIso.
4.DH.15OxycalciopyrochloreCa2Nb2O6OIso. m3m(4/m32/m) : Fd3m
4.DH.15'Fluorstrontiopyrochlore'(Sr,◻)2Nb2(O,OH)6F
4.DH.15OxyplumbopyrochlorePb2Nb2O6OIso. m3m(4/m32/m) : Fd3m
4.DH.15'Fluorplumbopyrochlore'(Pb,Y,Th,U,Na,Ca)2-x(Nb,Ti)2O6FIso.
4.DH.15'Bismutomicrolite (of Hogarth 1977)'Iso. m3m(4/m32/m) : Fd3m
4.DH.15'Bismutopyrochlore (of Chukanov et al.)'(Bi,Ca,U,Pb)2-xNb2(O,OH)6(OH)Amor.
4.DH.15'Kenoplumbopyrochlore'(Pb,◻)Nb2O6(◻,O)
4.DH.15Hydroxyplumbopyrochlore (Pb1.50.5)Nb2O6(OH)Iso. m3m(4/m32/m) : Fd3m
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.15HydroxycalciomicroliteCa1.5Ta2O6(OH)Iso. 432 : P4232
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)Iso. m3m(4/m32/m) : Fd3m
4.DH.15'Oxycalciobetafite'Ca2(Ti,Nb)2O6O
4.DH.15'Oxyuranobetafite'(U,Ca,◻)2(Ti,Nb)2O6O
4.DH.15Fluorcalciomicrolite(Ca,Na)2(Ta,Nb)2O6FIso. m3m(4/m32/m) : Fd3m
4.DH.15OxycalciomicroliteCa2Ta2O6OIso. m3m(4/m32/m) : Fd3m
4.DH.15OxystannomicroliteSn2Ta2O6OIso. m3m(4/m32/m) : Fd3m
4.DH.15Kenoplumbomicrolite(Pb,◻)2Ta2O6(◻,OH,O)Iso.
4.DH.15Oxynatromicrolite(Na,Ca,U)2(Ta,Nb)2O6(O,F)Iso. m3m(4/m32/m) : Fd3m
4.DH.15Oxystibiomicrolite(Sb3+,Ca)2Ta2O6OIso. m3m(4/m32/m) : Fd3m
4.DH.15'Hydromicrolite'(H2O,◻)2Ta2(O,OH)6(H2O)
4.DH.15'Plumbomicrolite (of Hogarth 1977)'
4.DH.15Hydrokenomicrolite(◻,H2O)2Ta2(O,OH)6(H2O)Iso. m3m(4/m32/m)
4.DH.15Hydroxykenoelsmoreite(◻,Pb)2(W,Fe3+,Al)2(O,OH)6(OH)Trig. 3 : R3
4.DH.15 va'Yttromicrolite (of Hogarth)'(Ca,Y3+,U,Na)2-x(Ta,Nb,Ti,Fe3+)2O7Iso. m3m(4/m32/m) : Fd3m
4.DH.15Hydroxykenopyrochlore(◻,Ce,Ba)2(Nb,Ti)2O6(OH,F)Iso. m3m(4/m32/m) : Fd3m
4.DH.15Hydroxymanganopyrochlore(Mn2+,Th,Na,Ca,REE)2(Nb,Ti)2O6(OH) Iso. m3(2/m3)
4.DH.20'Cuproroméite'Cu2Sb2(O,OH)7Iso.
4.DH.20Hydroxycalcioroméite(Ca,Sb3+)2(Sb5+,Ti)2O6(OH)Iso. m3m(4/m32/m) : Fd3m
4.DH.20BindheimitePb2Sb2O6OIso. m3m(4/m32/m) : Fd3m
4.DH.20Hydroxyferroroméite(Fe2+1.50.5)Sb5+2O6(OH)Iso. m3m(4/m32/m) : Fd3m
4.DH.20Fluorcalcioroméite(Ca,Na,◻)2Sb5+2(O,OH)6FIso. m3m(4/m32/m) : Fd3m
4.DH.20OxycalcioroméiteCa2Sb2O6OIso. m3m(4/m32/m) : Fd3m
4.DH.20StetefeldtiteAg2Sb2(O,OH)7Iso.
4.DH.20StibiconiteSb3+Sb5+2O6(OH) Iso. m3m(4/m32/m)
4.DH.20MonimolitePb2Sb5+2O7Iso. m3m(4/m32/m)
4.DH.25RosiaitePbSb5+2O6Trig. 3m(32/m) : P31m
4.DH.30Stefanweissite(Ca,REE)2Zr2(Nb,Ti)(Ti,Nb)2Fe2+O14Orth. mmm(2/m2/m2/m) : Cmca
4.DH.30ZirconoliteCaZrTi2O7Orth.
4.DH.30Laachite(Ca,Mn)2Zr2Nb2TiFeO14Mon. 2/m : B2/b
4.DH.30Nöggerathite-(Ce)(Ce,Ca)2Zr2(Nb,Ti)(Ti,Nb)2Fe2+O14Orth. mmm(2/m2/m2/m) : Cmca
4.DH.35LiandratiteU(Nb,Ta)2O8Trig. 3m(32/m) : P31m
4.DH.35PetscheckiteUFe(Nb,Ta)2O8Hex.
4.DH.40IngersoniteCa3Mn2+Sb5+4O14Trig. 32 : P3121
4.DH.45PittongiteNa0.22(W,Fe3+)(O,OH)3 · 0.44H2OHex. 6m2 : P6m2
4.DH.50TazzoliiteBa4-xNaxTi2Nb3SiO17[PO2(OH)2]x(OH)(1-2x) Orth. mmm(2/m2/m2/m) : Fmmm

Fluorescence of FluornatropyrochloreHide

Non-fluorescent

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 FluornatropyrochloreHide

References for FluornatropyrochloreHide

Localities for FluornatropyrochloreHide

Showing 23 localities.

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.
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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.
Angola
 
  • Huambo Province
    • Londuimbali
Gonçalves +1 other reference
Canada
 
  • Northwest Territories
    • North Slave Region
      • Blachford Lake alkaline complex
        • Thor Lake syenite complex
MÖLLER (2016)
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
Chao
    • Saguenay-Lac-Saint-Jean
      • Maria-Chapdelaine RCM
        • Girardville
Dupuis et al. (2013)
China
 
  • Sichuan
    • Liangshan Yi
      • Huili County
Xue et al. (2021)
Xue et al. (2021)
      • Mianning County
Williams et al. (2013)
  • Xinjiang
    • Akesu Prefecture
      • Baicheng Co.
Yin et al. (2015) +1 other reference
France
 
  • Réunion
    • Cilaos
JV COUREAU collection - Georges FAVREAU ...
Germany
 
  • Rhineland-Palatinate
    • Mayen-Koblenz
      • Mendig
        • Mendig
Christophe Boutry collection +1 other reference
        • Rieden
in the collection of Christof Schäfer
Hungary
 
  • Baranya County
    • Pécs District
      • Hosszúhetény
collector: Csaba Papp
www.geomania.hu +1 other reference
Madagascar
 
  • Diana
    • Ambanja District
      • Antsirabe
Université de Toulouse +1 other reference
Mongolia
 
  • Khovd Province
    • Myangad District
Pavel M. Kartashov (n.d.) +1 other reference
Norway
 
  • Akershus
    • Lunner
Canadian Museum of Nature collection
Portugal
 
  • Azores
    • São Miguel
Lavarde et al. (2019)
in the collection of Christof Schäfer
      • Ribeira Grande
Cámara et al. (2017)
      • Vila Franca do Campo
Alves (n.d.)
Russia
 
  • Murmansk Oblast
    • Kovdorsky District
Ivanyuk et al. (2018)
  • Zabaykalsky Krai
    • Kalarsky District
Starikova et al. (2019)
Tajikistan
 
  • Districts of Republican Subordination
Gerhard Möhn Collection. Identified by ...
 
and/or  
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