Fluornatromicrolite
A valid IMA mineral species
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About Fluornatromicrolite
Formula:
(Na1.5Bi0.5)Ta2O6F
Colour:
Green
Lustre:
Adamantine
Hardness:
5
Specific Gravity:
6.49
Crystal System:
Isometric
Member of:
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). Cause to controversies about the mineral and the nomenclature of the pyrochlore supergroup, the publication was delayed for several years. It was first published by Witzke et al. (2011).
Now the name is approved according to the new nomenclature of the pyrochlore supergroup (Atencio et al. 2010).
Now the name is approved according to the new nomenclature of the pyrochlore supergroup (Atencio et al. 2010).
Type Locality:
Isostructural with:
Unique Identifiers
Mindat ID:
7047
Long-form identifier:
mindat:1:1:7047:4
GUID
(UUID V4):
(UUID V4):
6daeb5c5-04f6-4bdc-a47e-46098beb7947
IMA Classification of Fluornatromicrolite
Classification of Fluornatromicrolite
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 |
---|---|---|
Fnmic | 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 Fluornatromicrolite
Adamantine
Transparency:
Transparent
Colour:
Green
Streak:
White
Hardness:
5 on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Cleavage not discernible
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 Fluornatromicrolite
Type:
Isotropic
Chemistry of Fluornatromicrolite
Mindat Formula:
(Na1.5Bi0.5)Ta2O6F
Crystallography of Fluornatromicrolite
Crystal System:
Isometric
Class (H-M):
m3m (4/m 3 2/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 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) |
---|---|---|---|---|---|---|---|
0018462 | Fluornatromicrolite | Andrade 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 49 615-621 | 2011 | Morro Redondo mine, Coronel Murta, Minas Gerias, Brazil | 0 | 293 | |
0018616 | Fluornatromicrolite | Witzke 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 1105-1110 | 2011 | Quixaba, Paraiba, Brazil | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
6.023 Å | (31) |
3.148 Å | (33) |
3.015 9100) Å | ( |
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 Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 4b: Highly evolved igneous rocks | >3.0 |
34 : Complex granite pegmatites |
Type Occurrence of Fluornatromicrolite
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 Fluornatromicrolite
Other Language Names for Fluornatromicrolite
German:Fluornatromikrolith
Relationship of Fluornatromicrolite to other Species
Member of:
Other Members of this group:
Fluorcalciomicrolite | (Ca,Na)2(Ta,Nb)2O6F | Iso. m3m (4/m 3 2/m) : Fd3m |
Hydrokenomicrolite | (◻,H2O)2Ta2(O,OH)6(H2O) | Iso. m3m (4/m 3 2/m) |
Hydromicrolite | (H2O,◻)2Ta2(O,OH)6(H2O) | |
Hydroxycalciomicrolite | Ca1.5Ta2O6(OH) | Iso. 4 3 2 : P42 3 2 |
Hydroxykenomicrolite | (◻,Na,Sb3+)2Ta2O6(OH) | Iso. m3m (4/m 3 2/m) : Fd3m |
Hydroxynatromicrolite | (Na,Bi3+,◻)2Ta2O6(OH) | Iso. m3m (4/m 3 2/m) : Fd3m |
Kenoplumbomicrolite | (Pb,◻)2Ta2O6(◻,OH,O) | Iso. |
Oxybismutomicrolite | (Bi1.33◻0.67)Σ2Ta2O6O | Iso. m3m (4/m 3 2/m) : Fd3m |
Oxycalciomicrolite | Ca2Ta2O6O | Iso. m3m (4/m 3 2/m) : Fd3m |
Oxystannomicrolite | Sn2Ta2O6O | Iso. m3m (4/m 3 2/m) : Fd3m |
Oxystibiomicrolite | (Sb3+,Ca)2Ta2O6O | Iso. m3m (4/m 3 2/m) : Fd3m |
Uranmicrolite (of Hogarth 1977) | (Ca,U,Na)2-x(Ta,Nb)2(O,OH)7 | Iso. |
Yttromicrolite (of Hogarth) | (Ca,Y3+,U,Na)2-x(Ta,Nb,Ti,Fe3+)2O7 | Iso. m3m (4/m 3 2/m) : Fd3m |
Common Associates
Associated Minerals Based on Photo Data:
20 photos of Fluornatromicrolite associated with Albite | Na(AlSi3O8) |
17 photos of Fluornatromicrolite associated with Muscovite | KAl2(AlSi3O10)(OH)2 |
13 photos of Fluornatromicrolite associated with Cleavelandite | Na(AlSi3O8) |
8 photos of Fluornatromicrolite associated with Topaz | Al2(SiO4)(F,OH)2 |
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 Hafnian Zircon | (Zr,Hf)SiO4 |
5 photos of Fluornatromicrolite associated with Quartz | SiO2 |
4 photos of Fluornatromicrolite associated with Fluor-elbaite | Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F |
4 photos of Fluornatromicrolite associated with Columbite-Tantalite |
Related Minerals - Strunz-mindat Grouping
4.DH. | Fluornatropyrochlore | (Na,Pb,Ca,REE,U)2Nb2O6F |
4.DH. | Roméite Group | A2(Sb5+)2O6Z |
4.DH. | Hydroxykenomicrolite | (◻,Na,Sb3+)2Ta2O6(OH) |
4.DH. | Fluornatroroméite | (Na,Ca)2Sb2(O,OH)6F |
4.DH. | Oxyplumboroméite | Pb2Sb2O6O |
4.DH. | Cesiokenopyrochlore | ◻Nb2(O,OH)6(Cs,◻) |
4.DH. | Oxyyttrobetafite-(Y) | Y2Ti2O6O |
4.DH.05 | Brannerite | UTi2O6 |
4.DH.05 | Orthobrannerite | U4+U6+Ti4O12(OH)2 |
4.DH.05 | Thorutite | (Th,U,Ca)Ti2(O,OH)6 |
4.DH.10 | Kassite | CaTi2O4(OH)2 |
4.DH.10 | Lucasite-(Ce) | CeTi2(O,OH)6 |
4.DH.15 va | Alumotungstite | ◻2W2O6(H2O) |
4.DH.15 | Bismutomicrolite (of Hogarth 1977) | |
4.DH.15 | Hydroplumboelsmoreite | (Pb,◻)(W,Fe3+)2O6 · H2O |
4.DH.15 | Hydropyrochlore | (H2O,◻)2Nb2(O,OH)6(H2O) |
4.DH.15 | Plumbomicrolite (of Hogarth 1977) | |
4.DH.15 | Stibiomicrolite (of Groat et al.) | |
4.DH.15 | Strontiopyrochlore (of Hogarth 1977) | A2Nb2(O,OH)6Z |
4.DH.15 | Bismutopyrochlore (of Chukanov et al.) | (Bi,Ca,U,Pb)2-xNb2(O,OH)6(OH) |
4.DH.15 | Hydrokenoelsmoreite | ◻2W2O6(H2O) |
4.DH.15 | Fluorcalciomicrolite | (Ca,Na)2(Ta,Nb)2O6F |
4.DH.15 | Oxycalciobetafite | Ca2(Ti,Nb)2O6O |
4.DH.15 va | Yttromicrolite (of Hogarth) | (Ca,Y3+,U,Na)2-x(Ta,Nb,Ti,Fe3+)2O7 |
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 | Kenoplumbopyrochlore | (Pb,◻)Nb2O6(◻,O) |
4.DH.15 | Oxyyttropyrochlore-(Y) | (Y,◻)2Nb2O6O |
4.DH.15 | Fluorkenopyrochlore | (◻,Sr,Ce,Ca,Na)2(Nb,Ti)2O6F |
4.DH.15 | Oxyuranobetafite | (U,Ca,◻)2(Ti,Nb)2O6O |
4.DH.15 | Oxycalciomicrolite | Ca2Ta2O6O |
4.DH.15 | Oxystannomicrolite | Sn2Ta2O6O |
4.DH.15 | Kenoplumbomicrolite | (Pb,◻)2Ta2O6(◻,OH,O) |
4.DH.15 | Oxystibiomicrolite | (Sb3+,Ca)2Ta2O6O |
4.DH.15 | Hydromicrolite | (H2O,◻)2Ta2(O,OH)6(H2O) |
4.DH.15 | Hydrokenomicrolite | (◻,H2O)2Ta2(O,OH)6(H2O) |
4.DH.15 | Hydroxymanganopyrochlore | (Mn2+,Th,Na,Ca,REE)2(Nb,Ti)2O6(OH) |
4.DH.15 | Hydroxycalciomicrolite | Ca1.5Ta2O6(OH) |
4.DH.15 | Fluorplumbopyrochlore | (Pb,Y,Th,U,Na,Ca)2-x(Nb,Ti)2O6F |
4.DH.15 | Hydroxyplumbopyrochlore | (Pb1.5◻0.5)Nb2O6(OH) |
4.DH.15 | Oxynatromicrolite | (Na,Ca,U)2(Ta,Nb)2O6(O,F) |
4.DH.15 | Fluorhydropyrochlore | |
4.DH.15 | Hydroxykenoelsmoreite | (◻,Pb)2(W,Fe3+,Al)2(O,OH)6(OH) |
4.DH.15 | Hydrokenopyrochlore | (◻,x)2Nb2O6(H2O,Cs) |
4.DH.15 | Hydroxykenopyrochlore | (◻,Ce,Ba)2(Nb,Ti)2O6(OH,F) |
4.DH.15 | Hydroxynatropyrochlore | (Na,Ca,Ce)2Nb2O6(OH) |
4.DH.15 | Hydroxynatromicrolite | (Na,Bi3+,◻)2Ta2O6(OH) |
4.DH.15 | Unnamed (Sb-analogue of Hydroxymanganopyrochlor) | (Mn,Ca,Y)2(Sb,Ti)2O6(OH) |
4.DH.15 | Oxybismutomicrolite | (Bi1.33◻0.67)Σ2Ta2O6O |
4.DH.20 | Bindheimite | Pb2Sb2O6O |
4.DH.20 | Hydroxycalcioroméite | (Ca,Sb3+)2(Sb5+,Ti)2O6(OH) |
4.DH.20 | Monimolite | Pb2Sb5+2O7 |
4.DH.20 | Cuproroméite | Cu2Sb2(O,OH)7 |
4.DH.20 | Stetefeldtite | Ag2Sb2(O,OH)7 |
4.DH.20 | Stibiconite | Sb3+Sb5+2O6(OH) |
4.DH.20 | Fluorcalcioroméite | (Ca,Na,◻)2Sb5+2(O,OH)6F |
4.DH.20 | Oxycalcioroméite | Ca2Sb2O6O |
4.DH.20 | Hydroxyferroroméite | (Fe2+1.5◻0.5)Sb5+2O6(OH) |
4.DH.25 | Rosiaite | PbSb5+2O6 |
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.30 | Stefanweissite | (Ca,REE)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 Fluornatromicrolite
mindat.org URL:
https://www.mindat.org/min-7047.html
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References for Fluornatromicrolite
Reference List:
Witzke, T., Steins, M., Doering, T., Schuckmann, W., Wegner, R., Pöllmann, H. (2011) Fluornatromicrolite, (Na,Ca,Bi)2Ta2O6F, a new mineral from Quixaba, Paraíba, Brazil. The Canadian Mineralogist, 49 (4) 1105-1110 doi:10.3749/canmin.49.4.1105
Localities for Fluornatromicrolite
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).
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.
All localities listed without proper references should be considered as questionable.
Afghanistan | |
| Rob Lavinsky photo |
| Lyckberg (2011) |
Argentina | |
| Galliski et al. (2016) |
| Márquez-Zavalía et al. (2012) |
Brazil | |
| Pavel.M. Kartashov (n.d.) |
| Witzke et al. (2011) |
China | |
| Qu et al. (2020) |
Czech Republic | |
| Novák et al. (2013) |
Finland | |
| Pavel M. Kartashov analytical data (2012) |
Italy | |
| Tobias U. Prediger collection |
Kazakhstan | |
| Anatoly Kasatkin analitical data |
Mozambique | |
| Mineralogical Record (2001) |
Pakistan | |
| |
Pavel.M. Kartashov (n.d.) | |
imported from Shigar District +1 other reference | |
Russia | |
| Zozulya et al. (2024) |
| Pavel.M. Kartashov (n.d.) |
| Kasatkin et al. (2020) |
USA | |
| Timothy Sherburn collection |
| King (2000) |
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Shigar Valley, Shigar District, Gilgit-Baltistan, Pakistan