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Davidite-(Ce)

Pictures (2 Images total)

Davidit-(Ce)
Views (File:
1651827173
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Davidit-(Ce)
Australien/South Australia/Olary Province/Mingary/Radium Hill Gebiet. Bildbreite 1,2 mm
Copyright: Ulrich Baumgärtl; Contribution: Ulrich Baumgärtl
Collection: Ulrich Baumgärtl
Location: Australien/South Australia/Olary Province/Mingary/Radium Hill Gebiet
Mineral: Davidite-(Ce)
Image: 1651827173
License: Usage for Mineralienatlas project only
Davidit-(Ce)

Australien/South Australia/Olary Province/Mingary/Radium Hill Gebiet. Bildbreite 1,2 mm

Collection: Ulrich Baumgärtl
Copyright: Ulrich Baumgärtl
Contribution: Ulrich Baumgärtl 2022-05-06
Locality: Radium Hill Gebiet / Mingary / Olary Province / South Australia / Australien
Davidit-(Ce)
Views (File:
1651827310
): 59
Davidit-(Ce)
Australien/South Australia/Olary Province/Mingary/Radium Hill Gebiet. Bildbreite 1,3 mm
Copyright: Ulrich Baumgärtl; Contribution: Ulrich Baumgärtl
Collection: Ulrich Baumgärtl
Location: Australien/South Australia/Olary Province/Mingary/Radium Hill Gebiet
Mineral: Davidite-(Ce)
Image: 1651827310
License: Usage for Mineralienatlas project only
Davidit-(Ce)

Australien/South Australia/Olary Province/Mingary/Radium Hill Gebiet. Bildbreite 1,3 mm

Collection: Ulrich Baumgärtl
Copyright: Ulrich Baumgärtl
Contribution: Ulrich Baumgärtl 2022-05-06
Locality: Radium Hill Gebiet / Mingary / Olary Province / South Australia / Australien

Collectors Summary

Color schwarz-met.
Streak color grauschwarz
Hardness (Mohs) 6
Solubility - Säuren
Crystal System trigonal, R3

Chemism

Chemical formula

(Ce,La,U,Y)2Fe3+2(Ti,Fe3+)18O38

Chemical composition

Cerium, Eisen, Lanthanum, Titan, Yttrium, Sauerstoff, Uran

Unit weight: 1911.1453798 u; Number of atoms in the formula: 60

Info

Empirical formula:

(Ce0.55La0.3U0.1Y0.05)2Fe2(Ti0.75Fe0.25)18O38

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

31.81

38

63.33

15.9994300

607.9783400

Titanium

Ti

33.81

13.5

22.50

47.8671000

646.2058500

Iron

Fe

18.99

6.5

10.83

55.8452000

362.9938000

Yttrium

Y

0.47

0.1

0.17

88.9058520

8.8905852

Lanthanum

La

4.36

0.6

1.00

138.9055200

83.3433120

Cerium

Ce

8.06

1.1

1.83

140.1161000

154.1277100

Uranium

U

2.49

0.2

0.33

238.0289130

47.6057826

Strunz 9th edition incl. updates

4.CC.40

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
C: Metall: Sauerstoff = 2: 3,3: 5, und vergleichbare
C: Mit großen und mittelgroßen Kationen
40:Crichtonit-Gruppe

Lapis Classification

IV/C.09-090

IV: OXIDE
C: Oxide mit Verhältnis Metall : Sauerstoff = 2:3 (M2O3 und verwandte Verbindungen)
9: Crichtonit-Gruppe

Classification by Hölzel

4.CE.510

4: OXIDES
C: R2O3 Sesquioxides
E: Other complex Oxides, mostly hextrig
5: Davidite-Group

Dana 8th edition

08.05.01.06

08: Multiple Oxides with Nb, Ta, and Ti
05: Multiple Oxides with Nb, Ta, and Ti
01: Crichtonite group (ABC18 T2 O38)

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Crichtonite Group

Optical Properties

Color

schwarz-met.

Streak color

grauschwarz

max. Birefringence

metamict

RI value α / ω / n

2.3

RI value β

metam.

Crystallography

Crystal System

trigonal

Class (H-M)

3

Space Group number

148

Space Group

R3

Cell parameters a (Å)

10.28

Cell parameters b (Å)

-

Cell parameters c (Å)

20.81

Cell parameters a/b or c/a

2.024

Cell parameters c/b

-

Z

3

Volumne (ų)

1904.535

X-Ray Powder Diffraction

3.42(70),
3.065(50),
3.000(40),
2.895(100),
2.850(60),
2.139(40),
1.601(40),
1.439(40)

XRD chart Davidite-(Ce)

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

Physical Properties

Hardness (Mohs)

6

VHN (Hardness Vickers)

855 (100g)

Density (g/cm³)

4.92 (berechnet)

4.999 ( ρ calc. Mineralienatlas )

Instability

- Säuren

(Co-)Type locality

(Co-)Type locality

Norwegen/Agder, Provinz/Iveland/Frigstad/Tuftane

Preface

Author (Name, Year)

Levinson, 1966

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

American Mineralogist 51 (1966), 152

IMA group assignments

Other languages

German

Davidit-(Ce)

Spanish

Davidita-(Ce)

English

Davidite-(Ce)

French

Davidite-(Ce)

Russian

Давидит-(Ce)

Japanese

セリウムダビッド石

CNMNC symbol

Symbol

Dvd-Ce

Locations with GPS information