Cesstibtantite Mineral Data

General Cesstibtantite Information

Chemical Formula:

(Cs,Na)SbTa4O12

Composition:

Molecular Weight = 579.81 gm

Cesium 6.88 % Cs 7.29 % Cs₂O

Sodium 1.19 % Na 1.60 % Na₂O

Tantalum 59.30 % Ta 72.40 % Ta₂O₅

Niobium 1.60 % Nb 2.29 % Nb₂O₅

Antimony 12.60 % Sb 15.08 % Sb₂O₃

Hydrogen 0.12 % H 1.09 % H₂O

Oxygen 17.66 % O

Fluorine 0.66 % F 0.66 % F

- % F -0.28 % -O=F₂

______ ______

100.00 % 100.14 % = TOTAL OXIDE

Empirical Formula:

Cs_0.3(OH)_0.7Sb_0.6Na_0.3Ta_1.9Nb_0.1O_5.7F_0.2

Environment:

Highly fractionated granite pegmatites.

IMA Status:

Approved IMA 1982

Locality:

Leshaia pegmatite, Vuoriyarvi carbonatite complex, Kola Peninsula, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for CESium, antimony (STIBium), and TANTalum in the composition.

Synonym:

ICSD 74283

PDF 35-672

Cesstibtantite Image

Images:

Cesstibtantite

Comments: Flesh-coloured simpsonite (blue scheelite-like UV luminescention) crystal partially replaced with grey cesstibtantite (orange UV luminescention)..
Location: Vasin-Myl'k Mt, Voron'i Tundry, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Specimen size is 6x5x2 cm.
© Pavel M. Kartashov

Cesstibtantite Crystallography

Cell Dimensions:

a = 10.256, Z = 7; V = 1,078.78 Den(Calc)= 6.25

Crystal System:

Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F d3m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 1.587(1), 1.84(1), 3.04(1),

Physical Properties of Cesstibtantite

Cleavage:

None

Color:

Colorless, Gray, Yellow orange, Black.

Density:

6.4 - 6.6, Average = 6.5

Diaphaneity:

Transparent to Opaque

Fracture:

Brittle - Uneven - Very brittle fracture producing uneven fragments.

Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Hardness:

6.5 - Pyrite

Luminescence:

Fluorescent and cathodoluminescent, Long UV=yellow orange.

Luster:

Vitreous - Adamantine

Streak:

white

Optical Properties of Cesstibtantite

Gladstone-Dale:

CI meas= 0.239 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.209 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.128,KPDmeas= 0.1231,KC= 0.1618
Ncalc = 2.01 - 2.07

Optical Data:

Isotropic, n=1.8.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Cesstibtantite in Air**
λ	R	∑ R(λ)
480 nm	13.80
551 nm	13.60
589 nm	13.60
656 nm	13.00

**Calculated Relative Intensity Colors of Cesstibtantite in Air**
Relative Intensity	0%	70%	100%	140%	210%	280%	350%	420%	490%	560%	630%	660%
R

Calculated Properties of Cesstibtantite

Electron Density:

Bulk Density (Electron Density)=5.32 gm/cc
note: Specific Gravity of Cesstibtantite =6.25 gm/cc.

Fermion Index:

Fermion Index = 0.0001561061
Boson Index = 0.9998438939

Photoelectric:

PE_{Cesstibtantite}= 793.94 barns/electron
U=PE_{Cesstibtantite} x rElectron Density=4,226.01 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Cesstibtantite is Not Radioactive

Cesstibtantite Classification

Dana Class:

08.02.04.01 (08)Multiple Oxides with Nb, Ta, and Ti

(08.02)where (A)2 (B2O6) (O,OH,F)

(08.02.04)Pyrochlore Group (Cesstibtantite Subgroup; (Na,Cs)(Bi,Sb)(Ta,Nb)4O12

08.02.04.01 Cesstibtantite (Cs,Na)SbTa4O12 F d3m 4/m 3 2/m

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

04.D - Metal:Oxygen = 1:2 and similar

04.DH -With large (� medium-sized) cations; sheets of edge-sharing octahedra

04.DH.15 Alumotungstite (W,Al)(O,OH)3(?) Unk Cubic

04.DH.15 Betafite (Ca,U)2(Ti,Nb,Ta)2O6(OH) F d3m 4/m 3 2/m

04.DH.15 Ferritungstite (K,Ca,Na)(W,Fe)2(O,OH)6•(H2O) F d3m 4/m 3 2/m

04.DH.15 Cesstibtantite (Cs,Na)SbTa4O12 F d3m 4/m 3 2/m

04.DH.15 Bismutomicrolite (Bi,Ca)(Ta,Nb)2O6(OH) F d3m 4/m 3 2/m

04.DH.15 Ceriopyrochlore-(Ce) (Ce,Ca,Y)2(Nb,Ta)2O6(OH,F) F d3m 4/m 3 2/m

04.DH.15 Bariopyrochlore (Ba,Sr)(Nb,Ti)2(O,OH)7 F d3m 4/m 3 2/m

04.DH.15 Bariomicrolite Ba(Ta,Nb)2(O,OH)7 F d3m 4/m 3 2/m

04.DH.15 Calciobetafite Ca2(Ti,Nb)2(O,OH)7 F d3m 4/m 3 2/m

04.DH.15 Jixianite Pb(W,Fe)2(O,OH)7 F d3m 4/m 3 2/m

04.DH.15 Plumbomicrolite (Pb,Ca,U)2Ta2O6(OH) F d3m 4/m 3 2/m

04.DH.15 Kalipyrochlore (H2O,Sr)(Nb,Ti)(O,OH)6•(H2O,K) F d3m 4/m 3 2/m

04.DH.15 Plumbopyrochlore (Pb,Y,U,Ca)2-xNb2O6(OH) F d3m 4/m 3 2/m

04.DH.15 Strontiopyrochlore* Sr2Nb2(O,OH)7 F d3m 4/m 3 2/m

04.DH.15 Uranmicrolite (U,Ca)2(Ta,Nb)2O6(OH) F d3m 4/m 3 2/m

04.DH.15 Pyrochlore (Na,Ca)2Nb2O6(OH,F) F d3m 4/m 3 2/m

04.DH.15 Microlite (Na,Ca)2Ta2O6(O,OH,F) F d3m 4/m 3 2/m

04.DH.15 Natrobistantite (Na,Cs)Bi(Ta,Nb,Sb)4O12 F d3m 4/m 3 2/m

04.DH.15 Plumbobetafite (Pb,U,Ca)(Ti,Nb)2O6(OH,F) F d3m 4/m 3 2/m

04.DH.15 Stibiomicrolite (Sb,Ca,Na)2(Ta,Nb)2(O,OH)7 F d3m 4/m 3 2/m

04.DH.15 Stannomicrolite (Sn,Fe,Mn)(Ta,Nb,Sn)2(O,OH)7 F d3m 4/m 3 2/m

04.DH.15 Stibiobetafite (Sb,Ca)2(Ti,Nb,Ta)2(O,OH)7 F d3m 4/m 3 2/m

04.DH.15 Uranpyrochlore (U,Ca,Ce)2(Nb,Ta)2O6(OH,F) F d3m 4/m 3 2/m

04.DH.15 Bismutopyrochlore! (Bi,U,Ca,Pb)1x(Nb,Ta)2O6(OH)•n(H2O) F d3m 4/m 3 2/m

04.DH.15 Fluornatromicrolite! (Na,Ca,Bi)2Ta2O6F F d3m 4/m 3 2/m

04.DH.15 Yttrobetafite-(Y) (Y,U,Ce)2(Ti,Nb,Ta)2O6(OH) F d3m 4/m 3 2/m

04.DH.15 Yttropyrochlore-(Y) (Y,Na,Ca,U)1-2(Nb,Ta,Ti)2(O,OH)7 F d3m 2/m 3

04.DH.15 Elsmoreite! WO3•0.5(H2O) F d3m 4/m 3 2/m

Other Cesstibtantite Information

References:

NAME( AntBidBlaNic3) PHYS. PROP.(AntBidBlaNic3) OPTIC PROP.(AntBidBlaNic3)

See Also:

Links to other databases for Cesstibtantite :
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
15 - WWW-MINCRYST

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Cesstibtantite

(Cs,Na)SbTa4O12
Dana No: 08.02.04.01 Strunz No: 04.DH.15
Locality:

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