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Wakefieldite-(Ce) (Wakefieldit-(Ce))

Pictures (19 Images total)

Wakefieldit-(Ce)
Views (File:
1178814354
): 1665
Wakefieldit-(Ce)
Bildbreite: 2 mm; Fundort: Grube Clara, Wolfach, Schwarzwald
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Deutschland/Baden-Württemberg/Freiburg, Bezirk/Ortenaukreis/Oberwolfach/Grube Clara
Mineral: Wakefieldite-(Ce)
Image: 1178814354
Rating: 8 (votes: 3)
License: Usage for Mineralienatlas project only
Wakefieldit-(Ce)

Bildbreite: 2 mm; Fundort: Grube Clara, Wolfach, Schwarzwald

Copyright: Stephan Wolfsried
Contribution: Hg 2007-05-10
Locality: Grube Clara / Oberwolfach / Ortenaukreis / Freiburg, Bezirk / Baden-Württemberg / Deutschland
Wakefieldit-(Ce)
Views (File:
1425156614
): 373
Wakefieldit-(Ce)
Tetragonales Prisma, schwarzer Kristall, BB = 6,1 mm; Fundort: Yellow Lake, Olalla, Osoyoos Mining Division, British Columbia, Kanada.
Copyright: Hannes Osterhammer; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A031983, Donator: Horst Geuer
Location: Kanada/British Columbia/Osoyoos Mining Division/Olalla/Yellow Lake
Mineral: Wakefieldite-(Ce)
Image: 1425156614
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
Wakefieldit-(Ce) (SNr: A031983)

Tetragonales Prisma, schwarzer Kristall, BB = 6,1 mm; Fundort: Yellow Lake, Olalla, Osoyoos Mining Division, British Columbia, Kanada.

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2015-02-28
Locality: Yellow Lake / Olalla / Osoyoos Mining Division / British Columbia / Kanada
Wakefieldit-(Ce)
Views (File:
1260362059
): 1778
Wakefieldit-(Ce)
Bildbreite: 1,5 mm; Fundort: Grube Clara, Wolfach, Schwarzwald, Deutschland
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Deutschland/Baden-Württemberg/Freiburg, Bezirk/Ortenaukreis/Oberwolfach/Grube Clara
Mineral: Wakefieldite-(Ce)
Image: 1260362059
Rating: 7 (votes: 2)
License: Usage for Mineralienatlas project only
Wakefieldit-(Ce)

Bildbreite: 1,5 mm; Fundort: Grube Clara, Wolfach, Schwarzwald, Deutschland

Copyright: Stephan Wolfsried
Contribution: Hg 2009-12-09
Locality: Grube Clara / Oberwolfach / Ortenaukreis / Freiburg, Bezirk / Baden-Württemberg / Deutschland
Wakefieldit-(Ce)
Views (File:
1540387533
): 231
Wakefieldit-(Ce)
Kristllgröße ca. 1 mm; Kanada/British Columbia/Okanagan Districts/Osoyoos Mining Division/Olalla/Yellow Lake
Copyright: Stefan; Contribution: Stefan
Location: Kanada/British Columbia/Osoyoos Mining Division/Olalla/Yellow Lake
Mineral: Wakefieldite-(Ce)
Image: 1540387533
Rating: 7 (votes: 1)
License: Usage for Mineralienatlas project only
Wakefieldit-(Ce)

Kristllgröße ca. 1 mm; Kanada/British Columbia/Okanagan Districts/Osoyoos Mining Division/Olalla/Yellow Lake

Copyright: Stefan
Contribution: Stefan 2018-10-24
Locality: Yellow Lake / Olalla / Osoyoos Mining Division / British Columbia / Kanada
Wakefieldit
Views (File:
1590438762
): 348
Wakefieldit
(dunkelgraue xx); FO: Grube Clara / Oberwolfach; BB 0,5 mm
Copyright: Halden-Joerg; Contribution: Halden-Joerg
Location: Deutschland/Baden-Württemberg/Freiburg, Bezirk/Ortenaukreis/Oberwolfach/Grube Clara
Mineral: Wakefieldite-(Ce)
Image: 1590438762
Rating: 7 (votes: 1)
License: Usage for Mineralienatlas project only
Wakefieldit

(dunkelgraue xx); FO: Grube Clara / Oberwolfach; BB 0,5 mm

Copyright: Halden-Joerg
Contribution: Halden-Joerg 2020-05-25
Locality: Grube Clara / Oberwolfach / Ortenaukreis / Freiburg, Bezirk / Baden-Württemberg / Deutschland

You find additional specimen at the Geolitho Museum

Collectors Summary

Color dunkelrot, schwarz
Streak color rostbraun
Hardness (Mohs) 4.25
Solubility +++ HCl
Crystal System tetragonal, I41/amd

Chemism

Chemical formula

CeVO4

Chemical composition

Cerium, Sauerstoff, Vanadium

Unit weight: 255.05533 u; Number of atoms in the formula: 6

Info

Empirical formula:

CeVO4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

25.09

4

66.67

15.9994300

63.9977200

Vanadium

V

19.97

1

16.67

50.9415100

50.9415100

Cerium

Ce

54.94

1

16.67

140.1161000

140.1161000

Analysis wt%

V2O5 : 32.69, As2O5 : 3.73, Ce2O3 : 33.07, La2O3 : 11.59, Nd2O3 : 9.53, Y2O3 : 2.99, Pr2O3 : 3.50, Sm2O3 : 1.70, Ln2O3 : 62.38 (Ref: Bulletin de Mineralogie 87)

Strunz 9th edition incl. updates

8.AD.35

8: Phosphate, Arsenate, Vanadate
A: Phosphate, etc., ohne weitere Anionen, ohne H2O
D: Mit ausschließlich großen [Kationen]
35:Xenotim-Gruppe

Lapis Classification

VII/A.14-040

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
A: Wasserfreie Phosphate [PO4] 3-, ohne fremde Anionen
14: Sehr große Kationen: Ca-Na-K, SE, Bi u.a.; Xenotim-Gruppe

Classification by Hölzel

8.AE.310

8: PHOSPHATES ARSENATES VANADATES
A: Phosphates (-anions -water)
E: Xenotime-Group

Dana 8th edition

38.04.11.04

38: Anhydrous Phosphates, etc
04: Anhydrous Phosphates, etc A+ XO4
11: Zenotime Group (Tetragonal: I41/amd)

IMA status

Mit Anerkennung der CNMNC umbenannt

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Xenotime group

Optical Properties

Color

dunkelrot, schwarz

Streak color

rostbraun

Change in color

gelb im Durchlicht

Diaphaneity (Transparency)

durchscheinend

max. Birefringence

0.191

Birefringence chart\! Wakefieldite-(Ce) title=Birefringence chart Wakefieldite-(Ce)

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

1.969

RI value γ / ε

2.160

Ri mean

2.033

2V angle

Uniaxial (+)

Crystallography

Crystal System

tetragonal

Class (H-M)

4/mmm

Space Group number

141

Space Group

I41/amd

Cell parameters a (Å)

7.35

Cell parameters b (Å)

-

Cell parameters c (Å)

6.56

Cell parameters a/b or c/a

0.893

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

4

Volume (ų)

354.388

X-Ray Powder Diffraction

4.89(50),
3.678(100),
2.766(90),
2.594(40),
2.291(30),
1.891(70),
1.833(20),
1.638(40)

XRD chart Wakefieldite-(Ce)

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

4.25

VHN (Hardness Vickers)

250 (50g)

Density (g/cm³)

4.76

4.78 ( ρ calc. Mineralienatlas )

Instability

+++ HCl

Preface

Author (Name, Year)

Deliens & Piret, 1977

References

Bulletin de Minéralogie 110 (1987), 657

IMA group assignments

Other languages

German

Wakefieldit-(Ce)

Spanish

Wakefieldita-(Ce)

French

Wakefieldite-(Ce)

English

Wakefieldite-(Ce)

Russian

Уэкфилдит-(Ce)

Japanese

セリウムウィークフィドライト

Alternative Name

Kusuit

Kusuite

CNMNC symbol

Symbol

Wf-Ce

Locations with GPS information

IDs

GUSID (Global unique identifier short form) VwbBIhCexkC5F1iM-N1pSw
GUID (Global unique identifier) 22C10657-9E10-40C6-B917-588CF8DD694B
Database ID 4111