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Uranmicrolite

Pictures (29 Images total)

Uranmikrolith
Views (File:
1264755371
): 1460
Uranmikrolith
Größe: 1,28 mm; Fundort: Grotta d'Oggi, San Piero in Campo, Campo nell'Elba,Insel Elba, Livorno, Toskana (Toscana), Italien
Copyright: Matteo Chinellato; Contribution: Hg
Location: Italien/Toskana (Toscana)/Livorno, Provinz/Elba, Insel/Campo nell'Elba/San Piero in Campo/Grotta d'Oggi
Mineral: Uranmicrolite
Image: 1264755371
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Uranmikrolith

Größe: 1,28 mm; Fundort: Grotta d'Oggi, San Piero in Campo, Campo nell'Elba,Insel Elba, Livorno, Toskana (Toscana), Italien

Copyright: Matteo Chinellato
Contribution: Hg 2010-01-29
Locality: Grotta d'Oggi / San Piero in Campo / Campo nell'Elba / Elba, Insel / Livorno, Provinz / Toskana (Toscana) / Italien
Uranmikrolith
Views (File:
1274529422
): 1043
Uranmikrolith
Größe: 2,47 mm; Fundort: Grotta d'Oggi, San Piero in Campo, Campo nell'Elba,Insel Elba, Livorno, Toskana (Toscana), Italien
Copyright: Matteo Chinellato; Contribution: Hg
Location: Italien/Toskana (Toscana)/Livorno, Provinz/Elba, Insel/Campo nell'Elba/San Piero in Campo/Grotta d'Oggi
Mineral: Uranmicrolite
Image: 1274529422
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Uranmikrolith

Größe: 2,47 mm; Fundort: Grotta d'Oggi, San Piero in Campo, Campo nell'Elba,Insel Elba, Livorno, Toskana (Toscana), Italien

Copyright: Matteo Chinellato
Contribution: Hg 2010-05-22
Locality: Grotta d'Oggi / San Piero in Campo / Campo nell'Elba / Elba, Insel / Livorno, Provinz / Toskana (Toscana) / Italien
Uranmikrolith mit Zirkon
Views (File:
1230298299
): 1204, Rating: 7.8
Uranmikrolith mit Zirkon
Größe: 3,08 mm; Fundort: Grotta d'Oggi, San Piero in Campo, Campo nell'Elba, Insel Elba, Livorno, Toskana (Toscana), Italien
Copyright: Matteo Chinellato; Contribution: Hg
Location: Italien/Toskana (Toscana)/Livorno, Provinz/Elba, Insel/Campo nell'Elba/San Piero in Campo/Grotta d'Oggi
Mineral: Uranmicrolite
Image: 1230298299
Rating: 7.8 (votes: 5)
License: Usage for Mineralienatlas project only
Uranmikrolith mit Zirkon

Größe: 3,08 mm; Fundort: Grotta d'Oggi, San Piero in Campo, Campo nell'Elba, Insel Elba, Livorno, Toskana (Toscana), Italien

Copyright: Matteo Chinellato
Contribution: Hg 2008-12-26
Locality: Grotta d'Oggi / San Piero in Campo / Campo nell'Elba / Elba, Insel / Livorno, Provinz / Toskana (Toscana) / Italien
Uranmikrolith
Views (File:
1220041678
): 850
Uranmikrolith
Größe: 3,49 mm; Fundort: Grotta d'Oggi, San Piero in Campo, Campo nell'Elba, Insel Elba, Livorno, Toskana (Toscana), Italien
Copyright: Matteo Chinellato; Contribution: Hg
Location: Italien/Toskana (Toscana)/Livorno, Provinz/Elba, Insel/Campo nell'Elba/San Piero in Campo/Grotta d'Oggi
Mineral: Uranmicrolite
Image: 1220041678
Rating: 8.33 (votes: 3)
License: Usage for Mineralienatlas project only
Uranmikrolith

Größe: 3,49 mm; Fundort: Grotta d'Oggi, San Piero in Campo, Campo nell'Elba, Insel Elba, Livorno, Toskana (Toscana), Italien

Copyright: Matteo Chinellato
Contribution: Hg 2008-08-29
Locality: Grotta d'Oggi / San Piero in Campo / Campo nell'Elba / Elba, Insel / Livorno, Provinz / Toskana (Toscana) / Italien
Uranmikrolith
Views (File:
1220187962
): 1111
Uranmikrolith
Größe: 1,43 mm; Fundort: Grotta d'Oggi, San Piero in Campo, Campo nell'Elba, Insel Elba, Livorno, Toskana (Toscana), Italien
Copyright: Matteo Chinellato; Contribution: Hg
Location: Italien/Toskana (Toscana)/Livorno, Provinz/Elba, Insel/Campo nell'Elba/San Piero in Campo/Grotta d'Oggi
Mineral: Uranmicrolite
Image: 1220187962
Rating: 8.33 (votes: 3)
License: Usage for Mineralienatlas project only
Uranmikrolith

Größe: 1,43 mm; Fundort: Grotta d'Oggi, San Piero in Campo, Campo nell'Elba, Insel Elba, Livorno, Toskana (Toscana), Italien

Copyright: Matteo Chinellato
Contribution: Hg 2008-08-31
Locality: Grotta d'Oggi / San Piero in Campo / Campo nell'Elba / Elba, Insel / Livorno, Provinz / Toskana (Toscana) / Italien
Uranmikrolith
Views (File:
1224500289
): 510
Uranmikrolith
Größe: 3,49 mm; Fundort: Grotta d'Oggi, San Piero in Campo, Campo nell'Elba, Insel Elba, Livorno, Toskana (Toscana), Italien
Copyright: Matteo Chinellato; Contribution: Hg
Location: Italien/Toskana (Toscana)/Livorno, Provinz/Elba, Insel/Campo nell'Elba/San Piero in Campo/Grotta d'Oggi
Mineral: Uranmicrolite
Image: 1224500289
Rating: 7.67 (votes: 3)
License: Usage for Mineralienatlas project only
Uranmikrolith

Größe: 3,49 mm; Fundort: Grotta d'Oggi, San Piero in Campo, Campo nell'Elba, Insel Elba, Livorno, Toskana (Toscana), Italien

Copyright: Matteo Chinellato
Contribution: Hg 2008-10-20
Locality: Grotta d'Oggi / San Piero in Campo / Campo nell'Elba / Elba, Insel / Livorno, Provinz / Toskana (Toscana) / Italien

You find additional specimen at the Geolitho Museum

Collectors Summary

Color grünlich braun, gelbbraun, schwarz
Streak color gelb
Hardness (Mohs) 5.5
Cleavages fehlt
Fracture unregelmäßig
Crystal System kubisch, Fd3m
Morphology kubisch

Additional information / Summary

Keine der beschriebenen Proben ist reich genug an U ( Uran) um den Status als neues Mineral zu rechtfertigen.

Chemism

Chemical formula

(Ca,U)2(Ta,Nb)2O6(OH,F)

Empirical formula (analysis)

(Ca0.68U0.30Na0.15Mn0.05Sr0.03Pb0.03)(Ta1.41Nb0.55Fe0.04)O6(OH, F)

Chemical composition

Calcium, Niob, Tantal, Fluor, Sauerstoff, Uran, Wasserstoff

Unit weight: 535.6728686875 u; Number of atoms in the formula: 10.99

Info

Empirical formula:

(Ca0.68U0.30Na0.15Mn0.05Sr0.03Pb0.03)(Ta1.41Nb0.55Fe0.04)O6((OH)0.75F0.25)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.14

0.75

6.82

1.0079470

0.7559603

Oxygen

O

20.16

6.75

61.42

15.9994300

107.9961525

Fluorine

F

0.89

0.25

2.27

18.9984033

4.7496008

Sodium

Na

0.64

0.15

1.36

22.9897702

3.4484655

Calcium

Ca

5.09

0.68

6.19

40.0784000

27.2533120

Manganese

Mn

0.51

0.05

0.45

54.9380499

2.7469025

Iron

Fe

0.42

0.04

0.36

55.8452000

2.2338080

Strontium

Sr

0.49

0.03

0.27

87.6210000

2.6286300

Niobium

Nb

9.54

0.55

5.00

92.9063820

51.0985101

Tantalum

Ta

47.63

1.41

12.83

180.9479100

255.1365531

Lead

Pb

1.16

0.03

0.27

207.2100000

6.2163000

Uranium

U

13.33

0.3

2.73

238.0289130

71.4086739

Analysis wt%

CaO : 3.40, PbO : 1.10, FeO : 0.56, UO2 : 2.17, UO3 : 9.38, TiO2 : 2.54, ZrO2 : 0.80, Bi2O3 : 0.98, Ta2O5 : 72.27, Nb2O5 : 1.41, H2O : 4.62 (Ref: Dana, 7th ed. 1)

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.CI.911

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

Dana 8th edition

08.02.02.04

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

grünlich braun, gelbbraun, schwarz

Streak color

gelb

Diaphaneity (Transparency)

transparent bis opak

RI value α / ω / n

1.97

Ri mean

1.97

2V angle

Isotropisch

Crystallography

Crystal System

kubisch

Class (H-M)

m3m

Space Group number

227

Space Group

Fd3m

Cell parameters a (Å)

10.328

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)

1101.663

X-Ray Powder Diffraction

2.953(100),
2.554(70),
1.818(100),
1.552(100),
1.183(70),
1.153(70),
1.054(70),
0.995(70)

XRD chart Uranmicrolite

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

Morphology

kubisch

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

5.5

Density (g/cm³)

6.74 (berechnet) 5.8 (gemssen)

6.459 ( ρ calc. Mineralienatlas )

Cleavages

fehlt

Fracture

unregelmäßig

Tenacity

spröde

Radioactivity

stark radioaktiv, Uran-haltig

(Co-)Type locality

(Co-)Type locality

Brasilien/Südosten (Região Sudeste)/Minas Gerais

Preface

Name from

Name als Mitglied der Mikrolith-Gruppe mit großem Uran-Anateil.

Author (Name, Year)

Strunz, 1957

References

American Mineralogist 62 (1977), 403

Other languages

Spanish

Uranmicrolita

English

Uranmicrolite

French

Uranmicrolite

German

Uranmikrolith

Russian

Уранмикролит

Japanese

ウランマイクロ石

Alternative Name

English

Djalmaite

English

Tantalhatchettolite

Tantalohatchettolit

Tantalohatchettolita

Tantalohatchettolite

Uranmicrolit

Locations with GPS information

IDs

GUSID (Global unique identifier short form) U1s6zZiCvkiJ6dRa6Zn7-w
GUID (Global unique identifier) CD3A5B53-8298-48BE-89E9-D45AE999FBFB
Database ID 3984