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Uranosilite

Collectors Summary

Color gelblichweiß
Streak color weiß
Solubility - verdünnte HCl, verdünnte HNO3
Crystal System orthorhombisch, P22121, Pmmb, Pmcb

Chemism

Chem­ical formula

U6+Si7O17

Chem­ical com­po­si­tion

Silicium, Sauerstoff, Uran

Unit weight: 706.617933 u; Number of atoms in the formula: 25

Info

Empirical formula:

USi7O17

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

38.49

17

68.00

15.9994300

271.9903100

Silicon

Si

27.82

7

28.00

28.0855300

196.5987100

Uranium

U

33.69

1

4.00

238.0289130

238.0289130

Strunz 9th edi­tion incl. updates

9.AK.40

9: Silikate (Germanate)
A: Inselsilikate (Nesosilikate)
K: Uranyl Insel(Neso)- und Schicht(Poly)-Silikate
40:Uranosilit-Gruppe mit U:Si = 1:7

Lapis Clas­sifica­tion

VIII/B.35-010

VIII: SILIKATE
B: Inselsilikate mit tetraederfremden Anionen
35: Kationen mit Koordinationszahlen zwischen [8] und [12]; Uranyl-Inselsilikate mit [UO2] 2+-[SiO4] 4- und Verwandte

Clas­sifica­tion by Hölzel

9.AO.300

9: SILICATES
A: Nesosilicates
O: Weeksite-Group

Dana 8th edi­tion

53.03.03.02

53: Nesosilicates Nesosilicate Insular SiO4 Groups and Other Anions of Complex Cations
03: Nesosilicates Nesosilicate Insular SiO4 Groups and Other Anions of Complex Cations with (UO2)
03: Other uranyl sillicates

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

gelblichweiß

Streak color

weiß

max. Birefrin­gence

0.014

Birefringence chart\! Uranosilite title=Birefringence chart Uranosilite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.570

RI value γ / ε

1.584

Ri mean

1.577

2V angle

Biaxial (-) nd

Crystallography

Crystal Sys­tem

orthorhombisch

Class (H-M)

222, mmm, mmm

Space Group number

18, 51, 55

Space Group

P22121, Pmmb, Pmcb

Cell param­e­ters a (Å)

11.60

Cell param­e­ters b (Å)

14.68

Cell param­e­ters c (Å)

12.83

Cell param­e­ters a/b or c/a

0.790

Cell param­e­ters c/b

0.874

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

6

Volumne (ų)

2184.795

X-Ray Pow­der Diffrac­tion

11.58(90),
7.30(100),
6.19(90),
3.50(80),
3.42(60),
3.20(60),
3.08(60),
2.77(70)

XRD chart Uranosilite

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

Physical Properties

Density (g/cm³)

3.25 (berechnet)

3.222 ( ρ calc. Mineralienatlas )

Insta­bil­ity

- verdünnte HCl, verdünnte HNO3

Preface

Occurrences

nur in der Oxidationszone der Urangrube Brunhilde in Menzenschwand

Gen­er­a­tion con­di­tions

Oxidationszone; unter speziellen Bedingungen entstanden

Rare­ness

extrem selten

Name from

der chemischen Zusammensetzung (Uran-Silikat)

Author (Name, Year)

Walenta, 1983

Safety Instructions

Industrial chemicals are often present in powder form and therefore often contain much higher dangers than natural, crystalline substances. These hazard statements refer to the classification of industrially used chemical compounds that may also occur in this natural mineral. The hazard classification makes no claim to completeness.




Safety classes: Ionizing radiation: Radioaktiv

References

Neues Jahrbuch für Mineralogie, Monatshefte (1983), 259

Other languages

German

Uranosilit

Spanish

Uranosilita

English

Uranosilite

French

Uranosilite

CNMNC (IMA)-Number

IMA 1981-066

CNMNC symbol

Symbol

Usi

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

German pages

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

English pages

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

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Uranosilit
Crystal-Treasure.com - search for: Uranosilit
Bosse - search for: Uranosilit
Edelsteine Neuburg - Gundolf Fischer - search for: Uranosilit

Locations with GPS information