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Bismutopyrochlore

Additional Functions

Collectors Summary

Color schwarz, dunkel grünlich braun
Streak color gelb
Hardness (Mohs) 5
Cleavages fehlt
Crystal System kubisch, Fd3m

Additional information / Summary

Möglicherweise Oxynatropyrochlor oder Nullertig-dominates Mitglied der Pyrochlor-Supergruppe

Chemism

Chemical formula

(Bi,U,Ca,Pb)1+x(Nb,Ta)2O6(OH)·nH2O

Chemical composition

Bismut, Blei, Calcium, Niob, Tantal, Sauerstoff, Uran, Wasserstoff

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.CH.914

4: OXIDES
C: R2O3 Sesquioxides
H: Pyrochlore-Group, Nb-dominant on the B-site

Dana 8th edition

08.02.01.09

08: Multiple Oxides with Nb, Ta, and Ti
02: Multiple Oxides with Nb, Ta, and Ti where (A)2 (B2O6) (O,OH,F)
01: Pyrochlore Group (Pyrochlore Subgroup; Nb>Ta;(Nb+Ta)>2(Ti)

IMA status

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

Mineral status

Varietät

Variety / polytype of

Pyrochlore supergroup

Optical Properties

Color

schwarz, dunkel grünlich braun

Streak color

gelb

Diaphaneity (Transparency)

durchscheinend

max. Birefringence

0.000

RI value α / ω / n

2.10

Ri mean

2.10

2V angle

Isotropisch

Crystallography

Crystal System

kubisch

Class (H-M)

m3m

Space Group number

227

Space Group

Fd3m

Cell parameters a (Å)

10.41

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

Volume (ų)

1128.112

X-Ray Powder Diffraction

5.98(40),
2.967(100),
2.614(70),
1.848(90),
1.569(90),
1.500(40),
1.195(80),
1.145(50)
XRD chart Bismutopyrochlore

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

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

5

Density (g/cm³)

4.97

Cleavages

fehlt

(Co-)Type locality

(Co-)Type locality

Tadschikistan/Berg-Badachschan, Provinz/Pamir-Hochgebirge/Rangkul' Hochland/Glimmer-Pegmatit

Tadschikistan/Gorno-Badakhshan, Provinz/Murghob/Rangkul/Mika Pegmatit

Preface

Author (Name, Year)

Chukanov & Skrigitil & Kuzmina & Zadov, 1999

References

Zapiski Vserossiskogo Mineralogicheskogo Obshchetstva 128 (1999) (4), 36

The Pyrochlore Supergroup of Minerals: Nomenclature; The Canadian Mineralogist Vol. 48, pp. 673-698 (2010)

Other languages

Spanish

Bismutopirocloro

German

Bismutopyrochlor

French

Bismutopyrochlore

English

Bismutopyrochlore

Russian

Висмутопирохлор

Japanese

蒼鉛ﾊﾟｲﾛｸﾛｱ

CNMNC (IMA)-Number

IMA 1998-059

IDs

GUSID (Global unique identifier short form) 04zzixFEzEabrAXL1axQ3w
GUID (Global unique identifier) 8BF38CD3-4411-46CC-9BAC-05CBD5AC50DF
Database ID 416