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Fluornatromicrolite

A valid IMA mineral species
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About FluornatromicroliteHide

Formula:
(Na1.5Bi0.5)Ta2O6F
Colour:
Green
Lustre:
Adamantine
Hardness:
5
Specific Gravity:
6.49
Crystal System:
Isometric
Name:
Named after the chemical composition. It was first approved as a new species by CNMMN, IMA in 1998 (IMA1998-018). But at the time the name was given, although approved, it was not according to the nomenclature at the time (Hogarth 1977). Because of controversies about the mineral and the nomenclature of the pyrochlore supergroup, the publication was delayed for several years. It was finally published by Witzke et al. (2011).
Now the name is approved according to the new nomenclature of the pyrochlore supergroup (Atencio et al. 2010).
A sodium-dominant mineral of the Microlite group with fluorine dominant at the second anion site.



Unique IdentifiersHide

Mindat ID:
7047
Long-form identifier:
mindat:1:1:7047:4

IMA Classification of FluornatromicroliteHide

Approved
IMA Formula:
(Na1.5Bi3+0.5)Ta5+2O6F
Approval year:
1998
First published:
2011

Classification of FluornatromicroliteHide

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

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

Physical Properties of FluornatromicroliteHide

Adamantine
Transparency:
Transparent
Colour:
Green
Streak:
White
Hardness:
Tenacity:
Brittle
Cleavage:
None Observed
Cleavage not discernible
Density:
6.49(6) g/cm3 (Measured)    
Comment:
Calculated density for Z=8 is 6.568g/cm�. The difference betwen the calculated and the measured density may be due to the small quantity of the mineral used.

Optical Data of FluornatromicroliteHide

Type:
Isotropic

Chemistry of FluornatromicroliteHide

Mindat Formula:
(Na1.5Bi0.5)Ta2O6F
Element Weights:
Element% weight
Ta58.762 %
Bi16.966 %
O15.587 %
Na5.599 %
F3.085 %

Calculated from ideal end-member formula.
Ta
Bi
O
Na
F

Crystallography of FluornatromicroliteHide

Crystal System:
Isometric
Class (H-M):
m3m(4/m32/m) - Hexoctahedral
Space Group:
Fd3m
Setting:
Fd3m
Cell Parameters:
a = 10.4451(2) Å
Unit Cell V:
1139.56 ų
Morphology:
Regular to flattened octahedral crystals

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0018616FluornatromicroliteWitzke T, Steins M, Doering T, Schuckmann W, Wegner R, Pollmann H (2011) Fluornatromicrolite, (Na,Ca,Bi)2Ta2O6F, a new mineral species from Quixaba, Paraiba, Brazil The Canadian Mineralogist 49 1105-11102011Quixaba, Paraiba, Brazil0293
0018462FluornatromicroliteAndrade M B, Atencio D, Menezes L A D, Ellena J (2011) The crystal structure of a microlite-group mineral with a formula near NaCaTa2O6F from the Morro Redondo mine, Coronel Murta, Minas Gerias, Brazil The Canadian Mineralogist 49 615-6212011Morro Redondo mine, Coronel Murta, Minas Gerias, Brazil0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
6.023 Å(31)
3.148 Å(33)
2.610 Å(27)
1.846 Å(59)
1.574 Å(47)
Comments:
Quixaba pegmatite, Paraíba, Brazil. The data are from the type description.

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 4b: Highly evolved igneous rocks>3.0
34 : Complex granite pegmatites

Type Occurrence of FluornatromicroliteHide

General Appearance of Type Material:
Flattened octahedral crystals up to 6 mm in size.
Place of Conservation of Type Material:
In the Mineralogical Collection of the Bergakademie Freiberg, Germany (No. 77975) and in the Mineralogical Collection of the Martin-Luther Universität Halle, Institut für Geologische Wissenschaften (No. 010356).
Geological Setting of Type Material:
Granite pegmatite.
Associated Minerals at Type Locality:

Synonyms of FluornatromicroliteHide

Other Language Names for FluornatromicroliteHide

Relationship of Fluornatromicrolite to other SpeciesHide

Other Members of Microlite Group:
Fluorcalciomicrolite(Ca,Na)2(Ta,Nb)2O6FIso. m3m(4/m32/m) : Fd3m
Hydrokenomicrolite(◻,H2O)2Ta2(O,OH)6(H2O)Iso. m3m(4/m32/m)
'Hydromicrolite'(H2O,◻)2Ta2(O,OH)6(H2O)
HydroxycalciomicroliteCa1.5Ta2O6(OH)Iso. 432 : P4232
Hydroxykenomicrolite(◻,Na,Sb3+)2Ta2O6(OH,Cs)Iso. m3m(4/m32/m) : Fd3m
'Hydroxylstibiomicrolite'(Sb,Ca,Na)2(Ta,Nb)2O6(OH)Iso.
'Hydroxynatromicrolite'(Na,Bi3+,◻)2Ta2O6(OH)Iso. m3m(4/m32/m) : Fd3m
Kenomicrolite2Ta2[O4(OH)2]◻Iso. m3m(4/m32/m) : Fd3m
Kenoplumbomicrolite(Pb,◻)2Ta2O6(◻,OH,O)Iso.
Oxybismutomicrolite(Bi1.330.67)Σ2Ta2O6OIso. m3m(4/m32/m) : Fd3m
OxycalciomicroliteCa2Ta2O6OIso. m3m(4/m32/m) : Fd3m
OxystannomicroliteSn2Ta2O6OIso. m3m(4/m32/m) : Fd3m
Oxystibiomicrolite(Sb3+,Ca)2Ta2O6OIso. m3m(4/m32/m) : Fd3m
'Uranmicrolite (of Hogarth 1977)'(Ca,U,Na)2-x(Ta,Nb)2(O,OH)7Iso.
'Yttromicrolite (of Hogarth)'(Ca,Y3+,U,Na)2-x(Ta,Nb,Ti,Fe3+)2O7Iso. m3m(4/m32/m) : Fd3m

Common AssociatesHide

Associations Based on Photo Data:
26 photos of Fluornatromicrolite associated with AlbiteNa(AlSi3O8)
23 photos of Fluornatromicrolite associated with MuscoviteKAl2(AlSi3O10)(OH)2
14 photos of Fluornatromicrolite associated with TopazAl2(SiO4)(F,OH)2
14 photos of Fluornatromicrolite associated with 'Cleavelandite'Na(AlSi3O8)
7 photos of Fluornatromicrolite associated with Lepidolite
6 photos of Fluornatromicrolite associated with Ixiolite-(Mn2+)(Ta0.67Mn2+0.33)O2
5 photos of Fluornatromicrolite associated with QuartzSiO2
5 photos of Fluornatromicrolite associated with 'Hafnian Zircon'(Zr,Hf)SiO4
4 photos of Fluornatromicrolite associated with Fluor-elbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F
4 photos of Fluornatromicrolite associated with 'Columbite-Tantalite'

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.Fluornatropyrochlore(Na,Pb,Ca,REE,U)2Nb2O6FIso. m3m(4/m32/m)
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.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

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 FluornatromicroliteHide

References for FluornatromicroliteHide

Localities for FluornatromicroliteHide

Showing 22 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.
Afghanistan
 
  • Kunar
    • Dara-e-Pech District
Lavinsky (n.d.)
  • Nuristan
    • Kamdesh District
Lyckberg (2011)
Argentina
 
  • Córdoba Province
    • San Alberto Department
      • Ambul District
        • Cañada del Puerto
Galliski et al. (2016)
  • Salta Province
    • La Poma Department
      • El Quemado mining district
Marquez-Zavalia et al. (2012)
Brazil
 
  • Paraíba
    • Frei Martinho
      • Quixaba
Pavel M. Kartashov (n.d.)
Witzke et al. (2011)
China
 
  • Henan
    • Sanmenxia
      • Lushi County
        • Nanyangshan pegmatite field
Qu et al. (2020)
Czech Republic
 
  • South Bohemian Region
    • Český Krumlov District
      • Nová Ves
Novák et al. (2013)
Finland
 
  • Pirkanmaa
    • Orivesi
      • Eräjärvi area
Pavel M. Kartashov analytical data (2012)
Italy
 
  • Tuscany
    • Livorno Province
      • Campo nell'Elba
        • Sant'Ilario in Campo
Tobias U. Prediger collection
Kazakhstan
 
  • East Kazakhstan Region
    • Ulan District
Anatoly Kasatkin analitical data
Mozambique
 
  • Zambezia Province
    • Alto Ligonha Pegmatite Field
      • Gilé district
MnhnL collection +1 other reference
    • Gilé District
      • Muiane-Naipa group
Moore (2001)
Pakistan
 
  • Gilgit-Baltistan
    • Roundu District
boyuan zhang Collection
    • Shigar District
      • Braldu Valley
Pavel M. Kartashov (n.d.)
imported from Shigar District +1 other reference
Russia
 
  • Murmansk Oblast
    • Voron'i Tundry
Zozulya et al. (2024)
  • Sverdlovsk Oblast
    • Prigorodny District
      • Yuzhakovo
        • Alabashka pegmatite field
Pavel M. Kartashov (n.d.)
  • Zabaykalsky Krai
    • Krasnochikoysky District
      • Krasnyi Chikoy
        • Malkhan pegmatite field
Kasatkin et al. (2020)
USA
 
  • California
    • San Diego County
      • Warner Springs Mining District
        • Warner Springs
Timothy Sherburn collection
  • Maine
    • Oxford County
      • Buckfield
King (2000)
 
and/or  
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