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Natrobistantite

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Natrobistantit-Kuboktaeder
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Natrobistantit-Kuboktaeder

Kristallgröße: 0,8 mm; Fundort: Koktokay-Pegmatit, Koktokay, Altay, Ili, Xinjiang, China

Copyright: Pavel M. Kartashov
Contribution: slugslayer 2009-06-12
Locality: Koktokay Pegmatitfeld / Koktokay (Fuyun), Kreis / Altay, Bezirk / Ili (Yili Hasake), autonome Präfektur / Xinjiang, Provinz / China

Collectors Summary

Color blau grün, farblos, grün, gelbgrün
Streak color weiß
Cleavages fehlt
Crystal System kubisch,

Chemism

Chem­ical formula

(Na,Cs)Bi(Ta,Nb,Sb)4O12

Chem­ical com­po­si­tion

Antimon, Bismut, Cäsium, Natrium, Niob, Tantal, Sauerstoff

Unit weight: 1045.90891505 u; Number of atoms in the formula: 18

Info

Empirical formula:

(Na0.75Cs0.25)Bi(Ta0.6Nb0.3Sb0.1)4O12

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

18.36

12

66.67

15.9994300

191.9931600

Sodium

Na

1.65

0.75

4.17

22.9897702

17.2423277

Niobium

Nb

10.66

1.2

6.67

92.9063820

111.4876584

Antimony

Sb

4.66

0.4

2.22

121.7601000

48.7040400

Caesium

Cs

3.18

0.25

1.39

132.9054520

33.2263630

Tantalum

Ta

41.52

2.4

13.33

180.9479100

434.2749840

Bismuth

Bi

19.98

1

5.56

208.9803820

208.9803820

Anal­y­sis wt%

Na2O : 1.98, Cs2O : 3.90, CaO : 0.65, Bi2O3 : 22.97, Ta2O5 : 56.38, Nb2O5 : 11.00, Sb2O5 : 2.13 (Ref: Mineralogicheskii Zhurnal 83)

Strunz 9th edi­tion incl. updates

4.DH.15

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
D: Metall: Sauerstoff = 1:2 und vergleichbare
H: Mit großen (± mittelgroßen) [Kationen]; Lagen kantenverknüpfter Oktaeder
15:Pyrochlor-Gruppe

Clas­sifica­tion by Hölzel

4.CI.981

4: OXIDES
C: R2O3 Sesquioxides
I: Microlite-Group, Ta-dominant on the B-site

Dana 8th edi­tion

08.02.04.02

08: Multiple Oxides with Nb, Ta, and Ti
02: Multiple Oxides with Nb, Ta, and Ti where (A)2 (B2O6) (O,OH,F)
04: Pyrochlore Group (Cesstibtantite Subgroup; (Na,Cs)(Bi,Sb)(Ta,Nb)4O12

IMA sta­tus

diskreditiert - The Canadian Mineralogist Vol. 48, pp. 673-698 (2010)

Min­eral sta­tus

Varietät

Var­i­ety / poly­type of

Microlite group

Optical Properties

Color

blau grün, farblos, grün, gelbgrün

Streak color

weiß

Diaphane­ity (Trans­parency)

transparent

RI value α / ω / n

2.00

Ri mean

2.00

2V angle

Isotropisch

Optical Data Luminescence

Lumi­nes­cence

fluoreszierend, Kurzwelliges UV=stark rot orange

Color LW-UV (365nm)

 

orangerot

After­glow (Per­sistant Lumi­nes­cence)

keine Daten

Crystallography

Crystal Sys­tem

kubisch

Cell param­e­ters a (Å)

10.502

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

-

Cell param­e­ters a/b or c/a

1

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

1158.287

X-Ray Pow­der Diffrac­tion

6.07(60),
3.17(50),
3.03(100),
2.628(80),
1.858(90),
1.584(90),
1.205(50),
1.174(50)

XRD chart Natrobistantite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystals 3D

Open larger view

Physical Properties

Density (g/cm³)

6.1 - 6.2 / Durchschnittlich = 6.15

5.997 ( ρ calc. Mineralienatlas )

Cleav­ages

fehlt

Preface

Author (Name, Year)

Voloshin & Pakhomovskiy & Stepanov & Tyusheva, 1983

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

'Betafite (of Hogarth 1977)' (Var.v. Pyrochlore supergroup)

(Ca,Na,U)2(Ti,Nb,Ta)2O6(OH)

kubisch : m3m : Fd3m

4.DH.15

Hydroplumboelsmoreite

(Pb,☐)2(W,Fe3+)2O6(H2O)

kubisch : m3m : Fd3m

4.DH.15

Fluornatrocoulsellite

CaNa3AlMg3F14

trigonal : 3m : R3m

4.DH.15

Hydroxymanganopyrochlore

(Mn,Th,Na,Ca,REE)2(Nb,Ti)2O6(OH)

kubisch : m3m : Fd3m

4.DH.15

'Alumotungstite' (Var.v. Hydrokenoelsmoreite)

(H2O,Ca)x(W,Al)2(O,OH)6·nH2O

4.DH.15

'Calciobetafite' (Var.v. Pyrochlore supergroup)

Ca2(Ti,Nb)2(O,OH)7

kubisch : m3m : Fd3m

4.DH.15

'Cesstibtantite' (Var.v. Pyrochlore supergroup)

(Cs,Na)SbTa4O12

kubisch : m3m : Fd3m

4.DH.15

'Ferritungstite' (Var.v. Hydrokenoelsmoreite)

(W6+,Fe3+)2(O,OH)6·n(H2O,K,Ca,Na)

kubisch : m3m : Fd3m

4.DH.15

Hydropyrochlore

(H2O,☐)2Nb2(O,OH)6(H2O)

kubisch : m3m : Fd3m

4.DH.15

'Plumbobetafite' (Var.v. Pyrochlore supergroup)

(Pb,U,Ca)(Ti,Nb)2O6(OH,F)

kubisch : m3m : Fd3m

4.DH.15

'Stibiobetafite' (Var.v. Pyrochlore group)

(Sb3+,Ca)2(Ti,Nb,Ta)2(O,OH)7

kubisch : m3m : Fd3m

4.DH.15

'Uranmicrolite' (Var.v. Microlite group)

(Ca,U)2(Ta,Nb)2O6(OH,F)

kubisch : m3m : Fd3m

4.DH.15

'Uranopyrochlore' (Var.v. Pyrochlore supergroup)

(Ca,U,Na,Ce)2(Nb,Ta)2(O,OH,F)7

kubisch : m3m : Fd3m

4.DH.15

'Bariomicrolite'

Ba(Ta,Nb)2(O,OH)7

kubisch : m3m : Fd3m

4.DH.15

'Bariopyrochlore' (Var.v. Pyrochlore supergroup)

(Ba,Sr)(Nb,Ti)2(O,OH)7

kubisch : m3m : Fd3m

4.DH.15

'Natrobistantite' (Var.v. Microlite group)

(Na,Cs)Bi(Ta,Nb,Sb)4O12

4.DH.15

'Plumbomicrolite' (Var.v. Microlite group)

(Pb,Na,Ca)2(Ta,Nb)2(O,OH)7

kubisch : m3m : Fd3m

4.DH.15

'Plumbopyrochlore' (Var.v. Pyrochlore group)

(Pb,Y,U,Ca)2-xNb2O6(OH)

kubisch : m3m : Fd3m

4.DH.15

'Stannomicrolite' (Var.v. Microlite group)

(Sn2+,Fe2+)(Ta,Nb,Sn4+)2(O,OH)7

kubisch : m3m : Fd3m

4.DH.15

'Stibiomicrolite' (Var.v. Microlite group)

(Sb,Ca,Na)2(Ta,Nb)2(O,OH)7

kubisch : m3m : Fd3m

4.DH.15

'Bismutomicrolite'

(Bi,Ca)(Ta,Nb)2O6(OH)

kubisch : m3m : Fd3m

4.DH.15

'Bismutopyrochlore' (Var.v. Pyrochlore supergroup)

(Bi,U,Ca,Pb)1+x(Nb,Ta)2O6(OH)·nH2O

kubisch : m3m : Fd3m

4.DH.15

Oxynatromicrolite

(Na,Ca,U)2(Ta,Nb)2O6(O,F)

kubisch : m3m : Fd3m

4.DH.15

'Yttrobetafite-(Y)' (Var.v. Pyrochlore supergroup)

(Y,U,Ce)2(Ti,Nb,Ta)2O6(OH)

amorph

4.DH.15

'Strontiopyrochlore' (Var.v. Pyrochlore group)

Sr0.6Nb2(O,OH)7

kubisch : m3m : Fd3m

4.DH.15

Cesiokenopyrochlore

☐Nb2(O,OH)6Cs1−x {x ∼ 0.20}

kubisch : m3m : Fd3m

4.DH.15

Hydrokenoelsmoreite

WO3·0.5H2O

kubisch : m3m : Fd3m

4.DH.15

Hydrokenomicrolite

(◻,H2O)2Ta2(O,OH)6(H2O)

kubisch : m3m : Fd3m

4.DH.15

Oxybismutomicrolite

(Bi1.33☐0.67)Σ2Ta2O6O

kubisch : m3m : Fd3m

4.DH.15

Oxycalciomicrolite

Ca2Ta2O7

kubisch : m3m : Fd3m

4.DH.15

Oxystannomicrolite

Sn2Ta2O6O

kubisch : m3m : Fd3m

4.DH.15

Oxystibiomicrolite

(Sb3+,Ca)2Ta2O6O

4.DH.15

'Yttropyrochlore-(Y)' (Var.v. Pyrochlore group)

(Y,Na,Ca,U)1-2(Nb,Ta,Ti)2(O,OH)7

4.DH.15

'Ceriopyrochlore-(Ce)' (Var.v. Pyrochlore supergroup)

(Ca,Ce,Y,Na)2(Nb,Ta)2(O,OH,F)7

kubisch : m3m : Fd3m

4.DH.15

Fluornatromicrolite

(Na,Ca,Bi)2(Ta,Nb)2O6F

kubisch : m3m : Fd3m

4.DH.15

Fluornatropyrochlore

(Na,Pb,Ca,REE,U)2Nb2O6F

kubisch : m3m : Fd3m

4.DH.15

Hydrokenopyrochlore

2Nb2O4(OH)2(H2O)

kubisch : m3m : Fd3m

4.DH.15

Hydroxyferroroméite

(Fe2+1.50.5)Sb5+2O6(OH)

kubisch : m3m : Fd3m

4.DH.15

Kenoplumbomicrolite

(Pb,◻)2Ta 2O6(◻,O,OH)

kubisch : m3m : Fd3m

4.DH.15

Oxycalciopyrochlore

Ca2Nb2O6O

4.DH.15

Fluorcalciomicrolite

(Ca,Na)2Ta2(O,OH)6F

kubisch : m3m : Fd3m

4.DH.15

Hydroxykenoelsmoreite

(☐,Pb)2(W,Fe3+,Al)2(O,OH)6(OH)

trigonal : 3 : R3

4.DH.15

Hydroxykenomicrolite

(◻,Na,Sb3+)2Ta2O6(OH)

kubisch : m3m : Fd3m

4.DH.15

Hydroxykenopyrochlore

(☐,Ce,Ba)2(Nb,Ti)2O6(OH,F)

kubisch : m3m : Fd3m

4.DH.15

Fluorcalciopyrochlore

(Ca,Na)2(Nb,Ti)2O6F

kubisch : m3m : Fd3m

4.DH.15

Hydroxynatropyrochlore

(Na,Сa,Ce)2Nb2O6(OH)

kubisch : m3m : Fd3m

4.DH.15

Hydroxycalciomicrolite

Ca1.5Ta2O6(OH)

kubisch : 432 : P4332

4.DH.15

Hydroxyplumbopyrochlore

(Pb1.50.5)Nb2O6(OH)

kubisch : m3m : Fd3m

4.DH.15

Hydroxycalciopyrochlore

(Ca,Na,U,☐)2(Nb,Ti)2O6(OH)

kubisch : m3m : Fd3m

4.DH.15

Fluorcalcioroméite

(Ca,Na)2Sb5+2O6(F,OH)

kubisch : m3m : Fd3m

4.DH.15d

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

'Uranmicrolite' (Var.v. Microlite group)

(Ca,U)2(Ta,Nb)2O6(OH,F)

kubisch : m3m : Fd3m

4.CI.911

'Bismutomicrolite'

(Bi,Ca)(Ta,Nb)2O6(OH)

kubisch : m3m : Fd3m

4.CI.912

Hydrokenomicrolite

(◻,H2O)2Ta2(O,OH)6(H2O)

kubisch : m3m : Fd3m

4.CI.960

'Bariomicrolite'

Ba(Ta,Nb)2(O,OH)7

kubisch : m3m : Fd3m

4.CI.961

'Natrobistantite' (Var.v. Microlite group)

(Na,Cs)Bi(Ta,Nb,Sb)4O12

4.CI.981

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

'Pyrochlore'

08.02.01.01

Hydropyrochlore

(H2O,☐)2Nb2(O,OH)6(H2O)

kubisch : m3m : Fd3m

08.02.01.02

'Bariopyrochlore' (Var.v. Pyrochlore supergroup)

(Ba,Sr)(Nb,Ti)2(O,OH)7

kubisch : m3m : Fd3m

08.02.01.03

'Yttropyrochlore-(Y)' (Var.v. Pyrochlore group)

(Y,Na,Ca,U)1-2(Nb,Ta,Ti)2(O,OH)7

08.02.01.04

'Ceriopyrochlore-(Ce)' (Var.v. Pyrochlore supergroup)

(Ca,Ce,Y,Na)2(Nb,Ta)2(O,OH,F)7

kubisch : m3m : Fd3m

08.02.01.05

'Plumbopyrochlore' (Var.v. Pyrochlore group)

(Pb,Y,U,Ca)2-xNb2O6(OH)

kubisch : m3m : Fd3m

08.02.01.06

'Uranopyrochlore' (Var.v. Pyrochlore supergroup)

(Ca,U,Na,Ce)2(Nb,Ta)2(O,OH,F)7

kubisch : m3m : Fd3m

08.02.01.07

'Bismutopyrochlore' (Var.v. Pyrochlore supergroup)

(Bi,U,Ca,Pb)1+x(Nb,Ta)2O6(OH)·nH2O

kubisch : m3m : Fd3m

08.02.01.09

'Bariomicrolite'

Ba(Ta,Nb)2(O,OH)7

kubisch : m3m : Fd3m

08.02.02.02

'Plumbomicrolite' (Var.v. Microlite group)

(Pb,Na,Ca)2(Ta,Nb)2(O,OH)7

kubisch : m3m : Fd3m

08.02.02.03

'Uranmicrolite' (Var.v. Microlite group)

(Ca,U)2(Ta,Nb)2O6(OH,F)

kubisch : m3m : Fd3m

08.02.02.04

'Bismutomicrolite'

(Bi,Ca)(Ta,Nb)2O6(OH)

kubisch : m3m : Fd3m

08.02.02.05

'Stannomicrolite' (Var.v. Microlite group)

(Sn2+,Fe2+)(Ta,Nb,Sn4+)2(O,OH)7

kubisch : m3m : Fd3m

08.02.02.06

'Stibiomicrolite' (Var.v. Microlite group)

(Sb,Ca,Na)2(Ta,Nb)2(O,OH)7

kubisch : m3m : Fd3m

08.02.02.07

'Betafite group'

08.02.03.01

'Yttrobetafite-(Y)' (Var.v. Pyrochlore supergroup)

(Y,U,Ce)2(Ti,Nb,Ta)2O6(OH)

amorph

08.02.03.02

'Plumbobetafite' (Var.v. Pyrochlore supergroup)

(Pb,U,Ca)(Ti,Nb)2O6(OH,F)

kubisch : m3m : Fd3m

08.02.03.03

'Stibiobetafite' (Var.v. Pyrochlore group)

(Sb3+,Ca)2(Ti,Nb,Ta)2(O,OH)7

kubisch : m3m : Fd3m

08.02.03.04

'Calciobetafite' (Var.v. Pyrochlore supergroup)

Ca2(Ti,Nb)2(O,OH)7

kubisch : m3m : Fd3m

08.02.03.05

'Cesstibtantite' (Var.v. Pyrochlore supergroup)

(Cs,Na)SbTa4O12

kubisch : m3m : Fd3m

08.02.04.01

'Natrobistantite' (Var.v. Microlite group)

(Na,Cs)Bi(Ta,Nb,Sb)4O12

08.02.04.02

Zircosulfate

Zr(SO4)2·4H2O

orthorhombisch : mmm : Fddd

08.02.05.01

Orthobrannerite

U4+U6+Ti4O12(OH)2

orthorhombisch : 222 : P2122

08.02.07.01

'Parabariomicrolite ' (Pol.v. Hydrokenomicrolite)

BaTa4O10(OH)2·2H2O

08.02.08.01

IMA Number

IMA 1982-016

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