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Natrobistantite Mineral Data
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General Natrobistantite Information
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 Chemical Formula: |
(Na,Cs)Bi(Ta,Nb,Sb)4O12 |
| Composition: |
Molecular Weight = 1,101.75 gm |
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Cesium 3.62 % Cs 3.84 % Cs2O |
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Sodium 1.46 % Na 1.97 % Na2O |
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Tantalum 45.99 % Ta 56.15 % Ta2O5 |
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Niobium 8.43 % Nb 12.06 % Nb2O5 |
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Bismuth 20.86 % Bi 23.26 % Bi2O3 |
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Antimony 2.21 % Sb 2.65 % Sb2O3 |
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Oxygen 17.43 % O |
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______ ______ |
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100.00 % 99.93 % = TOTAL OXIDE |
| Empirical Formula: |
Na0.7Cs0.3Bi1.1Ta2.8NbSb0.2O12 |
| Environment: |
Replacing bismutotantalite in museum samples from a granitic pegmatite. |
| IMA Status: |
Approved IMA 1983 |
| Locality: |
Koktoky [Fuyan], Sinkiang-Uighur Autonomous Province, China. Link to MinDat.org Location Data. |
| Name Origin: |
For sodium (NATRium), BISmuth, and TANTalum in the chemical formula which deviates from the IMA pyrochlore nomenclature. |
| Name Pronunciation: |
Natrobistantite + Pronunciation  |
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Natrobistantite Image |
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Images:
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Natrobistantite
Comments: Bluish-green fragments of natrobistantite embedded in epoxy, co-type material.
Location: Kyoktogai pegmatite field, Altai, Xinjinag Province, China.
Scale: See Image.
© Rruff Database |
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Natrobistantite Crystallography
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| Cell Dimensions: |
a = 10.502, Z = 4; V = 1,158.29 Den(Calc)= 6.32 |
| Crystal System: |
Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F d3m |
| X Ray Diffraction: |
By Intensity(I/Io): 3.03(1), 1.858(0.9), 2.628(0.8), |
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Physical Properties of Natrobistantite
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| Cleavage: |
None |
| Color: |
Blue green, Colorless, Green, Yellow green. |
| Density: |
6.1 - 6.2, Average = 6.15 |
| Diaphaneity: |
Transparent |
| Habit: |
Aggregates - Made of numerous individual crystals or clusters. |
| Habit: |
Octahedral Crystals - Occurs as octahedral shaped crystals. |
| Luminescence: |
Fluorescent, Short UV=strong red orange. |
| Luster: |
Adamantine |
| Streak: |
white |
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Optical Properties of Natrobistantite
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| Optical Data: |
Isotropic. |
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NCalc= 2.05 - from Gladstone-Dale relationship (KC = 0.1664) where Ncalc=Dcalc*KC+1
NCalc= 2.02 - from Gladstone-Dale relationship (KC = 0.1664) where Ncalc=Dmeas*KC+1
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Calculated Properties of Natrobistantite
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| Electron Density: |
Bulk Density (Electron Density)=5.36 gm/cc
note: Specific Gravity of Natrobistantite =6.32 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0001390383
Boson Index = 0.9998609617 |
| Photoelectric: |
PENatrobistantite = 992.51 barns/electron
U=PENatrobistantite x rElectron Density=5,318.75 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Natrobistantite is Not Radioactive |
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Natrobistantite Classification
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| Dana Class: |
08.02.04.02 (08)Multiple Oxides with Nb, Ta, and Ti |
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(08.02)where (A)2 (B2O6) (O,OH,F) |
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(08.02.04)Pyrochlore Group (Cesstibtantite Subgroup; (Na,Cs)(Bi,Sb)(Ta,Nb)4O12 |
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08.02.04.01 Cesstibtantite (Cs,Na)SbTa4O12 F d3m 4/m 3 2/m |
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08.02.04.02 Natrobistantite (Na,Cs)Bi(Ta,Nb,Sb)4O12 F d3m 4/m 3 2/m |
| Strunz Class: |
04.DH.15 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate |
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04.D - Metal:Oxygen = 1:2 and similar |
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04.DH -With large (� medium-sized) cations; sheets of edge-sharing octahedra |
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04.DH.15 Alumotungstite (W,Al)(O,OH)3(?) Unk Cubic |
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04.DH.15 Betafite (Ca,U)2(Ti,Nb,Ta)2O6(OH) F d3m 4/m 3 2/m |
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04.DH.15 Ferritungstite (K,Ca,Na)(W,Fe)2(O,OH)6•(H2O) F d3m 4/m 3 2/m |
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04.DH.15 Cesstibtantite (Cs,Na)SbTa4O12 F d3m 4/m 3 2/m |
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04.DH.15 Bismutomicrolite (Bi,Ca)(Ta,Nb)2O6(OH) F d3m 4/m 3 2/m |
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04.DH.15 Ceriopyrochlore-(Ce) (Ce,Ca,Y)2(Nb,Ta)2O6(OH,F) F d3m 4/m 3 2/m |
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04.DH.15 Bariopyrochlore (Ba,Sr)(Nb,Ti)2(O,OH)7 F d3m 4/m 3 2/m |
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04.DH.15 Bariomicrolite Ba(Ta,Nb)2(O,OH)7 F d3m 4/m 3 2/m |
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04.DH.15 Calciobetafite Ca2(Ti,Nb)2(O,OH)7 F d3m 4/m 3 2/m |
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04.DH.15 Jixianite Pb(W,Fe)2(O,OH)7 F d3m 4/m 3 2/m |
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04.DH.15 Plumbomicrolite (Pb,Ca,U)2Ta2O6(OH) F d3m 4/m 3 2/m |
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04.DH.15 Kalipyrochlore (H2O,Sr)(Nb,Ti)(O,OH)6•(H2O,K) F d3m 4/m 3 2/m |
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04.DH.15 Plumbopyrochlore (Pb,Y,U,Ca)2-xNb2O6(OH) F d3m 4/m 3 2/m |
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04.DH.15 Strontiopyrochlore* Sr2Nb2(O,OH)7 F d3m 4/m 3 2/m |
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04.DH.15 Uranmicrolite (U,Ca)2(Ta,Nb)2O6(OH) F d3m 4/m 3 2/m |
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04.DH.15 Pyrochlore (Na,Ca)2Nb2O6(OH,F) F d3m 4/m 3 2/m |
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04.DH.15 Microlite (Na,Ca)2Ta2O6(O,OH,F) F d3m 4/m 3 2/m |
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04.DH.15 Natrobistantite (Na,Cs)Bi(Ta,Nb,Sb)4O12 F d3m 4/m 3 2/m |
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04.DH.15 Plumbobetafite (Pb,U,Ca)(Ti,Nb)2O6(OH,F) F d3m 4/m 3 2/m |
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04.DH.15 Stibiomicrolite (Sb,Ca,Na)2(Ta,Nb)2(O,OH)7 F d3m 4/m 3 2/m |
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04.DH.15 Stannomicrolite (Sn,Fe,Mn)(Ta,Nb,Sn)2(O,OH)7 F d3m 4/m 3 2/m |
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04.DH.15 Stibiobetafite (Sb,Ca)2(Ti,Nb,Ta)2(O,OH)7 F d3m 4/m 3 2/m |
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04.DH.15 Uranpyrochlore (U,Ca,Ce)2(Nb,Ta)2O6(OH,F) F d3m 4/m 3 2/m |
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04.DH.15 Bismutopyrochlore! (Bi,U,Ca,Pb)1x(Nb,Ta)2O6(OH)•n(H2O) F d3m 4/m 3 2/m |
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04.DH.15 Fluornatromicrolite! (Na,Ca,Bi)2Ta2O6F F d3m 4/m 3 2/m |
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04.DH.15 Yttrobetafite-(Y) (Y,U,Ce)2(Ti,Nb,Ta)2O6(OH) F d3m 4/m 3 2/m |
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04.DH.15 Yttropyrochlore-(Y) (Y,Na,Ca,U)1-2(Nb,Ta,Ti)2(O,OH)7 F d3m 2/m 3 |
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04.DH.15 Elsmoreite! WO3•0.5(H2O) F d3m 4/m 3 2/m |
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Other Natrobistantite Information
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| References: |
NAME( AntBidBlaNic3) PHYS. PROP.(AntBidBlaNic3) OPTIC PROP.(AntBidBlaNic3) |
| See Also: |
Links to other databases for Natrobistantite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
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Natrobistantite
(Na,Cs)Bi(Ta,Nb,Sb)4O12
Dana No: 08.02.04.02 Strunz No: 04.DH.15
Locality:
Notes:
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