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Cesstibtantite (Cesstibtantit)

Collectors Summary

Color farblos, grau
Streak color weiß
Hardness (Mohs) 6.5
Cleavages undeutlich
Crystal System kubisch, Fd3m

Additional information / Summary

Varietät der Pyrochlor-Supergruppe oder Hydroxykenomikrolith. Der ursprüngliche Typmaterial Cesstibtantit wurde zu einem anderen Mineralnamen "Hydroxykenomikrolith" übertragen.

Chemism

Chemical formula

(Cs,Na)SbTa4O12

Chemical composition

Antimon, Cäsium, Natrium, Tantal, Sauerstoff

Unit weight: 1142.97143155 u; Number of atoms in the formula: 18

Info

Empirical formula:

(Cs0.75Na0.25)SbTa4O12

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

16.80

12

66.67

15.9994300

191.9931600
Sodium

Na

0.50

0.25

1.39

22.9897702

5.7474426
Antimony

Sb

10.65

1

5.56

121.7601000

121.7601000
Caesium

Cs

8.72

0.75

4.17

132.9054520

99.6790890
Tantalum

Ta

63.33

4

22.22

180.9479100

723.7916400

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

Dana 8th edition

08.02.04.01

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

Pyrochlore supergroup

Optical Properties

Color

farblos, grau

Streak color

weiß

Optical Data Luminescence

Color LW-UV (365nm)

  

orangegelb

Color SW-UV (254nm)

  

orangegelb

Most Common Activator

(UO2)2+ (Uranyl-Ion) als Verunreinigungen

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

kubisch

Class (H-M)

m3m

Space Group number

227

Space Group

Fd3m

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

8

X-Ray Powder Diffraction

3.17(90),
3.04(100),
1.860(100),
1.587(100),
1.370(90),
1.017(90),
1.012(100)
XRD chart Cesstibtantite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

6.5

Cleavages

undeutlich

(Co-)Type locality

(Co-)Type locality

Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Voron'i Tundry/Vasin-Myl'k, Berg

Preface

Author (Name, Year)

Voloshin & Men'shikov & Pakhomovskiy & Polezhaeva &1981

References

Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 110 (1981), 345

The Pyrochlore Supergroup of Minerals: Nomenclature; The Canadian Mineralogist Vol. 48, pp. 673-698 (2010)http://pubsites.uws.edu.au/ima-cnmnc/Atencio%20et%20al%20pyrochlore%20nomenclature.pdf

Clarification of status of species in the pyrochlore supergroup Mineralogical Magazine, February 2013, v. 77, p. 13-20, published online February 13, 2013 http://nrmima.nrm.se/MM%2077%281%29%20AG%20Christy.pdf

Other languages

German

Cesstibtantit

Spanish

Cesstibtantita

French

Cesstibtantite

English

Cesstibtantite

Russian

Цезстибтантит

Locations with GPS information

IDs

GUSID (Global unique identifier short form) tYiyh4MAPE2BeVZprOyl9A
GUID (Global unique identifier) 87B288B5-0083-4D3C-8179-5669ACECA5F4
Database ID 659