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Stannomicrolite

Collectors Summary

Color gelbbraun
Hardness (Mohs) 4.5 - 5.5
Crystal System kubisch, Fd3m

Additional information / Summary

diskreditiert

Der Stanomikrolith von Ercit et al. (1987) ist ein Oxystannomikrolith. Der Stannomikrolith von Uher et al. (2008) ist ein Ca- oder nullwertig-dominates Mitglied der Mikrolith-Gruppe.

Chemism

Chemical formula

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

Chemical composition

Eisen, Niob, Tantal, Zinn, Sauerstoff, Wasserstoff

Unit weight: 513.37770345 u; Number of atoms in the formula: 11.75

Info

Empirical formula:

(Sn0.75Fe0.25)(Ta0.6Nb0.3Sn0.1)2(O0.75(OH)0.25)7

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.34

1.75

14.89

1.0079470

1.7639073
Oxygen

O

21.82

7

59.57

15.9994300

111.9960100
Iron

Fe

2.72

0.25

2.13

55.8452000

13.9613000
Niobium

Nb

10.86

0.6

5.11

92.9063820

55.7438292
Tin

Sn

21.97

0.95

8.09

118.7107000

112.7751650
Tantalum

Ta

42.30

1.2

10.21

180.9479100

217.1374920

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

08.02.02.06

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

IMA status

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

Mineral status

Varietät

Variety / polytype of

Microlite group

Optical Properties

Color

gelbbraun

Diaphaneity (Transparency)

durchscheinend

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

3.046(100),
2.640(70),
1.866(80),
1.589(80),
1.524(50),
1.210(50),
1.180(50),
1.017(50)
XRD chart Stannomicrolite

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

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

4.5 - 5.5

Density (g/cm³)

8.34

Preface

Author (Name, Year)

Vorma & Siivola, 1967

References

American Mineralogist 62 (1977), 403

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

Canadian Mineralogist 48 (2010), 673

Other languages

Spanish

Estannomicrolita

French

Stannomicrolite

English

Stannomicrolite

German

Stannomikrolith

Russian

Станномикролит

Alternative Name

German

Stannomicrolit

Spanish

Stannomicrolita

English

Sukulaite

Locations with GPS information

IDs

GUSID (Global unique identifier short form) XZdjfchbjkKk5jHL8m5bxQ
GUID (Global unique identifier) 7D63975D-5BC8-428E-A4E6-31CBF26E5BC5
Database ID 3609