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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

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Stannomikrolith
Google-Bilder-Suche - search for: Stannomikrolith
Mineralienatlas.de (Forum) - search for: Stannomikrolith

English pages

Mindat - search for: Stannomicrolite
Webmineral - search for:Stannomicrolite
Handbook-of-Mineralogy - search for: Stannomicrolite
RRUFF - Raman, XRD and other mineral data - search for: Stannomicrolite
RRUFF - References and PDF downloads - search for: Stannomicrolite
American-Mineralogist-Crystal-Structure-Database - search for: Stannomicrolite
Strahlen.org - search for: Stannomicrolite

Russian pages

Webmineral.ru - search for: Станномикролит

Mineral Dealer

German pages

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Crystal-Treasure.com - search for: Stannomikrolith
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Edelsteine Neuburg - Gundolf Fischer - search for: Stannomikrolith
Geolitho marketplace, by and for collectors - search for: Stannomikrolith

Locations with GPS information