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Oxystannomicrolite (Oxystannomikrolith)

Additional Functions

Collectors Summary

Color rötlichbraun
Crystal System kubisch, Fd3m

Chemism

Chemical formula

Sn2Ta2O6O

Chemical composition

Tantal, Zinn, Sauerstoff

Unit weight: 711.31323 u; Number of atoms in the formula: 11

Info

Empirical formula:

Sn2Ta2O6O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

15.74

7

63.64

15.9994300

111.9960100

Tin

Sn

33.38

2

18.18

118.7107000

237.4214000

Tantalum

Ta

50.88

2

18.18

180.9479100

361.8958200

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

Lapis Classification

IV/C.13-034

IV: OXIDE
C: Oxide mit Verhältnis Metall : Sauerstoff = 2:3 (M2O3 und verwandte Verbindungen)
13: Pyrochlor-Gruppe; MIKROLITH-Untergruppe [Ta ± Nb]

Classification by Hölzel

4.CI.240

4: OXIDES
C: R2O3 Sesquioxides
I: Microlite-Group, Ta-dominant on the B-site

IMA status

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

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Pyrochlore supergroup  ⇒ Microlite group

Optical Properties

Color

rötlichbraun

RI value α / ω / n

2.223

Ri mean

2.223

2V angle

Isotropisch

Crystallography

Crystal System

kubisch

Class (H-M)

m3m

Space Group number

227

Space Group

Fd3m

Cell parameters a (Å)

10.458

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°

Volumne (ų)

1143.789

X-Ray Powder Diffraction

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

(Co-)Type locality

(Co-)Type locality

Finnland/Kanta-Häme, Landschaft/Tammela/Sukula Pegmatite

References

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

Bulletin de la Commission Géologique de Finlande 229 (1967), 173

Canadian Mineralogist 48 (2010), 673

IMA group assignments

Other languages

English

Oxystannomicrolite

German

Oxystannomikrolith

CNMNC symbol

Symbol

Omic