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Cervandonite-(Ce)

Pictures (35 Images total)

Cervandonit-(Ce)
Views (File:
1287045042
): 1406
Cervandonit-(Ce)
Größe: 1,43 mm; Fundort: Monte Cervandone, Alpe Devero (Valle Devero), Baceno, Val d'Ossola, Verbano-Cusio-Ossola, Piemont, Italien
Copyright: Matteo Chinellato; Contribution: Hg
Collection: Domenico Preite
Location: Italien/Piemont (Piemonte), Region/Verbano-Cusio-Ossola, Provinz/Baceno/Alpe Devero (Valle Devero)/Monte Cervandone
Mineral: Cervandonite-(Ce)
Image: 1287045042
Rating: 8.5 (votes: 2)
License: Usage for Mineralienatlas project only
Cervandonit-(Ce)

Größe: 1,43 mm; Fundort: Monte Cervandone, Alpe Devero (Valle Devero), Baceno, Val d'Ossola, Verbano-Cusio-Ossola, Piemont, Italien
Collection: Domenico Preite
Copyright: Matteo Chinellato
Contribution: Hg 2010-10-14
Locality: Monte Cervandone / Alpe Devero (Valle Devero) / Baceno / Verbano-Cusio-Ossola, Provinz / Piemont (Piemonte), Region / Italien
Cervandonit-(Ce)
Views (File:
1415718028
): 897
Cervandonit-(Ce)
Bildbreite: 3 mm; Fundort: Wannigletscher, Binntal, Wallis, Schweiz
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Schweiz/Wallis, Kanton/Goms, Bezirk/Binntal/Binn/Kriegalptal (Chriegalptal)/Wannigletscher-Scherbadung
Mineral: Cervandonite-(Ce)
Image: 1415718028
Rating: 9 (votes: 2)
License: Usage for Mineralienatlas project only
Cervandonit-(Ce)

Bildbreite: 3 mm; Fundort: Wannigletscher, Binntal, Wallis, Schweiz
Copyright: Stephan Wolfsried
Contribution: Hg 2014-11-11
Locality: Wannigletscher-Scherbadung / Kriegalptal (Chriegalptal) / Binn / Binntal / Goms, Bezirk / Wallis, Kanton / Schweiz
Synchisit-(Ce) mit Cervandonit-(Ce)
Views (File:
1408959201
): 1583
Synchisit-(Ce) mit Cervandonit-(Ce)
Größe: 3 mm; Fundort: Monte Cervandone, Alpe Devero (Valle Devero), Baceno, Val d'Ossola, Verbano-Cusio-Ossola, Piemont, Italien
Copyright: Matteo Chinellato; Contribution: Hg
Location: Italien/Piemont (Piemonte), Region/Verbano-Cusio-Ossola, Provinz/Baceno/Alpe Devero (Valle Devero)/Monte Cervandone
Mineral: Cervandonite-(Ce), Synchysite-(Ce)
Image: 1408959201
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Synchisit-(Ce) mit Cervandonit-(Ce)

Größe: 3 mm; Fundort: Monte Cervandone, Alpe Devero (Valle Devero), Baceno, Val d'Ossola, Verbano-Cusio-Ossola, Piemont, Italien
Copyright: Matteo Chinellato
Contribution: Hg 2014-08-25
Locality: Monte Cervandone / Alpe Devero (Valle Devero) / Baceno / Verbano-Cusio-Ossola, Provinz / Piemont (Piemonte), Region / Italien
Cervandonit-(Ce)
Views (File:
1415372798
): 795
Cervandonit-(Ce)
Bildbreite: 2,5 mm; Fundort: Wannigletscher, Binntal, Wallis, Schweiz
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Schweiz/Wallis, Kanton/Goms, Bezirk/Binntal/Binn/Kriegalptal (Chriegalptal)/Wannigletscher-Scherbadung
Mineral: Cervandonite-(Ce)
Image: 1415372798
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Cervandonit-(Ce)

Bildbreite: 2,5 mm; Fundort: Wannigletscher, Binntal, Wallis, Schweiz
Copyright: Stephan Wolfsried
Contribution: Hg 2014-11-07
Locality: Wannigletscher-Scherbadung / Kriegalptal (Chriegalptal) / Binn / Binntal / Goms, Bezirk / Wallis, Kanton / Schweiz
Cervandonit-(Ce)
Views (File:
1479919877
): 541
Cervandonit-(Ce)
Cervandonit-(Ce) als rosenartiges Aggregat rhomboedrischer Kriställchen aus der Fetiasitkluft Gorsatt-Lüssi auf der Gorb, Alp Lercheltini, Binntal, Wallis, Schweiz. Bildbreite etwa 4,5 mm.
Copyright: Klaus Schäfer; Contribution: Klaus Schäfer
Collection: Klaus Schäfer, Collection number: Binn-Lt-Fk-CeCe-2-1-1
Location: Schweiz/Wallis, Kanton/Goms, Bezirk/Binntal/Binn/Lercheltini-Gebiet (Lärcheltini)/Gorb/Fetiasitkluft Gorsatt-Lüssi
Mineral: Cervandonite-(Ce)
Image: 1479919877
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Cervandonit-(Ce) (SNr: Binn-Lt-Fk-CeCe-2-1-1)

Cervandonit-(Ce) als rosenartiges Aggregat rhomboedrischer Kriställchen aus der Fetiasitkluft Gorsatt-Lüssi auf der Gorb, Alp Lercheltini, Binntal, Wallis, Schweiz. Bildbreite etwa 4,5 mm.
Collection: Klaus Schäfer
Copyright: Klaus Schäfer
Contribution: Klaus Schäfer 2016-11-23
Locality: Fetiasitkluft Gorsatt-Lüssi / Gorb / Lercheltini-Gebiet (Lärcheltini) / Binn / Binntal / Goms, Bezirk / Wallis, Kanton / Schweiz

You find additional specimen at the Geolitho Museum

Collectors Summary

Color schwarz
Streak color bräunlichschwarz
Hardness (Mohs) 5
Crystal System monoklin, C2, Cm, C2/m

Chemism

Chemical formula

(Ce,Nd,La)(Fe3+,Ti,Fe2+,Al)3O2(Si2O7)1-x+y(AsO3)1+x-y(OH)3*x-3*y {x=0.47}{y=0.31}

Empirical formula (analysis)

(Ce,Nd,La)(Fe3+,Ti,Fe2+,Al)3O2(Si2O7)0.84(AsO3)1.16(OH)0.48

Chemical composition

Aluminium, Arsen, Cerium, Eisen, Lanthanum, Neodymium, Silicium, Titan, Sauerstoff, Wasserstoff

Unit weight: 621.26868721 u; Number of atoms in the formula: 19.16

Info

Empirical formula:

(Ce0.6Nd0.3La0.1)(Fe0.55Ti0.3Fe0.1Al0.05)3O2(Si2O7)0.84(AsO3)1.16(OH)0.48

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.08

0.48

2.51

1.0079470

0.4838146
Oxygen

O

30.49

11.84

61.80

15.9994300

189.4332512
Aluminium

Al

0.65

0.15

0.78

26.9815382

4.0472307
Silicon

Si

7.59

1.68

8.77

28.0855300

47.1836904
Titanium

Ti

6.93

0.9

4.70

47.8671000

43.0803900
Iron

Fe

17.53

1.95

10.18

55.8452000

108.8981400
Arsenic

As

13.99

1.16

6.05

74.9216020

86.9090583
Lanthanum

La

2.24

0.1

0.52

138.9055200

13.8905520
Cerium

Ce

13.53

0.6

3.13

140.1161000

84.0696600
Neodymium

Nd

6.97

0.3

1.57

144.2430000

43.2729000

Analysis wt%

FeO : 4.20, Ce2O3 : 9.97, Nd2O3 : 5.17, La2O3 : 4.83, Y2O3 : 1.05, ThO2 : 2.86, UO2 : 1.77, CaO : 0.40, Fe2O3 : 13.99, Al2O3 : 4.07, TiO2 : 11.57, SiO2 : 17.76, As2O5 : 21.93, Ln2O3 : 21.02 (Ref: Schweizerische Mineralogische und Petrographische

Mitteilungen 88)

Strunz 9th edition incl. updates

9.HG.05

9: Silikate (Germanate)
H: Unklassifizierte Silikate
G: Mit [REE], [Th]
05:

Lapis Classification

VIII/C.01-060

VIII: SILIKATE
C: Gruppensilikate
1: Gruppensilikate [Si2O7] 6-, ohne tetraederfremde Anionen

Classification by Hölzel

9.BK.340

9: SILICATES
B: Sorosilicates
K: Perrierite-Group

Dana 8th edition

43.04.12.01

43: Compound Phosphates, etc.
04: Compound Phosphates, etc. (Anhydrous Compound Anions With Hydroxyl or Halogen)

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

schwarz

Streak color

bräunlichschwarz

RI value α / ω / n

2.00

Ri mean

2.00

2V angle

Biaxial

Pleochroism

schwarz bis gelblichbraun, rötlichbraun

Crystallography

Crystal System

monoklin

Class (H-M)

2, m, 2/m

Space Group number

5, 8, 12

Space Group

C2, Cm, C2/m

Cell parameters a (Å)

6.508

Cell parameters b (Å)

-

Cell parameters c (Å)

18.520

Cell parameters a/b or c/a

2.846

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

3

Volume (ų)

679.3

Crystal structure

aufgeklärt, damit neue Formel, siehe Francesco Demartin, Carlo Maria Gramaccioli, Stefan Graeser: The crystal structure of cervandonite-(Ce), an interesting example of As3+--Si diadochy. Can Mineral 46 (2008) S. 423-430.

X-Ray Powder Diffraction

5.403(60),
3.255(90),
3.096(60),
2.874(100),
2.792(40),
2.403(30),
1.794(40),
1.627(30)
XRD chart Cervandonite-(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)

5

VHN (Hardness Vickers)

450 (50g)

Density (g/cm³)

4.9 (berechnet)

4.556 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Italien/Piemont (Piemonte), Region/Verbano-Cusio-Ossola, Provinz/Baceno/Alpe Devero (Valle Devero)/Monte Cervandone

Preface

Author (Name, Year)

Armbruster & Bühler & Graeser & Stalder & Amthauer, 1988

Additional Information

zu erkennen an seinen gekrümmten Kristallflächen.

References

Schweizerische Mineralogische und Petrographische Mitteilungen 68 (1988), 125

The crystal structure of cervandonite-(Ce), an interesting example of As3+--Si diadochy. Can Mineral 46 (2008) S. 423-430.

Other languages

German

Cervandonit-(Ce)

Spanish

Cervandonita-(Ce)

English

Cervandonite-(Ce)

French

Cervandonite-(Ce)

Russian

Червандонит-(Ce)

Japanese

ｾﾘｳﾑｾﾙﾊﾞﾝﾄﾞﾅｲﾄ

Japanese

ｾﾙﾊﾞﾝﾄﾞﾅｲﾄ

Alternative Name

German

Cervandonit

Spanish

Cervandonita

Cervandonite

CNMNC (IMA)-Number

IMA 1986-044

CNMNC symbol

Symbol

Cvd-Ce

Locations with GPS information

IDs

GUSID (Global unique identifier short form) HuhUzKAzlE2YanYqYHrERA
GUID (Global unique identifier) CC54E81E-33A0-4D94-986A-762A607AC444
Database ID 652