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Vicanite-(Ce)

Pictures (6 Images total)

Vicanit-(Ce)
Views (File:
1275676914
): 1852, Rating: 7.6
Vicanit-(Ce)
Vicanit-(Ce) auf Sanidin. Kristallgröße: 0,7 mm, Fundort: Vetralla, Lago de Vico, Latium, Italien
Copyright: Enrico Bonacina; Contribution: thdun5
Collection: Domenico Preite
Location: Italien/Latium (Lazio), Region/Viterbo, Provinz/Vicosee (Lago di Vico)/Vetralla
Mineral: Vicanite-(Ce)
Image: 1275676914
Rating: 7.6 (votes: 5)
License: Usage for Mineralienatlas project only
Vicanit-(Ce)

Vicanit-(Ce) auf Sanidin. Kristallgröße: 0,7 mm, Fundort: Vetralla, Lago de Vico, Latium, Italien
Collection: Domenico Preite
Copyright: Enrico Bonacina
Contribution: thdun5 2010-06-04
Locality: Vetralla / Vicosee (Lago di Vico) / Viterbo, Provinz / Latium (Lazio), Region / Italien
Vicanit-(Ce)
Views (File:
1275677132
): 1237
Vicanit-(Ce)
Kristallgröße: 0,5 mm, Fundort: Tre Croci, Vetralla, Lago de Vico, Latium, Italien
Copyright: Luigi Mattei; Contribution: thdun5
Location: Italien/Latium (Lazio), Region/Viterbo, Provinz/Vicosee (Lago di Vico)/Vetralla/Tre Croci
Mineral: Vicanite-(Ce)
Image: 1275677132
Rating: 8 (votes: 2)
License: Usage for Mineralienatlas project only
Vicanit-(Ce)

Kristallgröße: 0,5 mm, Fundort: Tre Croci, Vetralla, Lago de Vico, Latium, Italien
Copyright: Luigi Mattei
Contribution: thdun5 2010-06-04
Locality: Tre Croci / Vetralla / Vicosee (Lago di Vico) / Viterbo, Provinz / Latium (Lazio), Region / Italien
Vicanit-(Ce)
Views (File:
1275676866
): 782
Vicanit-(Ce)
Vicanit-(Ce) auf Sanidin. Kristallgröße: 1,05 mm, Fundort: Vetralla, Lago de Vico, Latium, Italien
Copyright: Enrico Bonacina; Contribution: thdun5
Collection: Domenico Preite
Location: Italien/Latium (Lazio), Region/Viterbo, Provinz/Vicosee (Lago di Vico)/Vetralla
Mineral: Vicanite-(Ce)
Image: 1275676866
Rating: 5.67 (votes: 3)
License: Usage for Mineralienatlas project only
Vicanit-(Ce)

Vicanit-(Ce) auf Sanidin. Kristallgröße: 1,05 mm, Fundort: Vetralla, Lago de Vico, Latium, Italien
Collection: Domenico Preite
Copyright: Enrico Bonacina
Contribution: thdun5 2010-06-04
Locality: Vetralla / Vicosee (Lago di Vico) / Viterbo, Provinz / Latium (Lazio), Region / Italien
Vicanit-(Ce)
Views (File:
1324895018
): 738
Vicanit-(Ce)
Größe: 0,32 mm, Fundort: Tre Croci, Vetralla, Lago de Vico, Latium, Italien
Copyright: Matteo Chinellato; Contribution: Hg
Location: Italien/Latium (Lazio), Region/Viterbo, Provinz/Vicosee (Lago di Vico)/Vetralla/Tre Croci
Mineral: Vicanite-(Ce)
Image: 1324895018
Rating: 5.67 (votes: 3)
License: Usage for Mineralienatlas project only
Vicanit-(Ce)

Größe: 0,32 mm, Fundort: Tre Croci, Vetralla, Lago de Vico, Latium, Italien
Copyright: Matteo Chinellato
Contribution: Hg 2011-12-26
Locality: Tre Croci / Vetralla / Vicosee (Lago di Vico) / Viterbo, Provinz / Latium (Lazio), Region / Italien
Vicanit-(Ce)
Views (File:
1275676830
): 741
Vicanit-(Ce)
Vicanit-(Ce) auf Sanidin. Kristallgröße: 0,55 mm, Fundort: Vetralla, Lago de Vico, Latium, Italien
Copyright: Enrico Bonacina; Contribution: thdun5
Collection: Domenico Preite
Location: Italien/Latium (Lazio), Region/Viterbo, Provinz/Vicosee (Lago di Vico)/Vetralla
Mineral: Vicanite-(Ce)
Image: 1275676830
Rating: 6 (votes: 1)
License: Usage for Mineralienatlas project only
Vicanit-(Ce)

Vicanit-(Ce) auf Sanidin. Kristallgröße: 0,55 mm, Fundort: Vetralla, Lago de Vico, Latium, Italien
Collection: Domenico Preite
Copyright: Enrico Bonacina
Contribution: thdun5 2010-06-04
Locality: Vetralla / Vicosee (Lago di Vico) / Viterbo, Provinz / Latium (Lazio), Region / Italien

Collectors Summary

Color Gelb, gelbgrün
Streak color weiß
Hardness (Mohs) 5.00 - 6.00
Cleavages keine
Fracture muschelig
Crystal System trigonal, R3m

Chemism

Chemical formula

Na0.5(Ce,Ca,Th)15Fe3+[F9|(As3+O3)0.5|As5+O4|BO3|Si3B3O18|SiO4)3]

Chemical composition

Arsen, Calcium, Cerium, Eisen, Natrium, Silicium, Thorium, Bor, Fluor, Sauerstoff

Unit weight: 2783.73451735 u; Number of atoms in the formula: 65.5

Info

Empirical formula:

Na0.5(Ce0.6Ca0.3Th0.1)15Fe[F9(AsO3)0.5AsO4BO3Si3B3O18SiO4)3]

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Boron

B

1.55

4

6.11

10.8117000

43.2468000
Oxygen

O

17.53

30.5

46.56

15.9994300

487.9826150
Fluorine

F

6.14

9

13.74

18.9984033

170.9856293
Sodium

Na

0.41

0.5

0.76

22.9897702

11.4948851
Silicon

Si

4.04

4

6.11

28.0855300

112.3421200
Calcium

Ca

6.48

4.5

6.87

40.0784000

180.3528000
Iron

Fe

2.01

1

1.53

55.8452000

55.8452000
Arsenic

As

4.04

1.5

2.29

74.9216020

112.3824030
Cerium

Ce

45.30

9

13.74

140.1161000

1,261.0449000
Thorium

Th

12.50

1.5

2.29

232.0381100

348.0571650

Analysis wt%

SiO2 : 13.82, Fe2O3 : 1.66, ThO2 : 18.24, UO2 : 1.96, Ce2O3 : 14.41, La2O3 : 12.01, Pr2O3 : 2.77, Nd2O3 : 1.79, CaO : 17.07, As2O3 : 4.49, B2O3 : 5.27, F : 7.50, Ln2O3 : 30.98 (Ref: European Journal of Mineralogy 95)

Strunz 9th edition incl. updates

9.AJ.35

9: Silikate (Germanate)
A: Inselsilikate (Nesosilikate)
J: Insel(Neso)silikate mit BO3 Triangeln und /oder B[4], Be[4] Tetraedern, eckenteilend mit SiO4
35:Vicanit-Gruppe

Lapis Classification

VIII/B.33-025

VIII: SILIKATE
B: Inselsilikate mit tetraederfremden Anionen
33: Kationen mit Koordinationszahlen zwischen [8] und [12]; Beryllium- und Bor-Inselsilikate

Classification by Hölzel

9.AK.550

9: SILICATES
A: Nesosilicates
K: Boro and Beryllo Nesosilicates
5: C large

Dana 8th edition

54.03.01.01

54: Nesosilicates Nesosilicate Borosilicates and Some Beryllosilicates
03: Nesosilicates Nesosilicate Borosilicates and Some Beryllosilicates
01: Vicanite Group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

Gelb, gelbgrün

Streak color

weiß

max. Birefringence

0.035
Birefringence chart\! Vicanite-(Ce) title=Birefringence chart Vicanite-(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

1.757

RI value γ / ε

1.722

Ri mean

1.745

2V angle

Uniaxial (-)

Crystallography

Crystal System

trigonal

Class (H-M)

3m

Space Group number

160

Space Group

R3m

Cell parameters a (Å)

10.795

Cell parameters b (Å)

-

Cell parameters c (Å)

27.336

Cell parameters a/b or c/a

2.532

Cell parameters c/b

-

Z

3

Volume (ų)

2758.741

X-Ray Powder Diffraction

7.70(50),
4.42(50),
3.13(50),
2.993(100),
2.950(70),
2.698(50),
1.839(50),
1.802(50)
XRD chart Vicanite-(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)

5.00 - 6.00

VHN (Hardness Vickers)

530 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

5.026 ( ρ calc. Mineralienatlas )

Cleavages

keine

Fracture

muschelig

(Co-)Type locality

(Co-)Type locality

Italien/Latium (Lazio), Region/Viterbo, Provinz/Vicosee (Lago di Vico)/Vetralla/Tre Croci

Preface

Author (Name, Year)

Maras & Parodi & Della Ventura & Ohnenstetter, 1995

References

European Journal of Mineralogy 7 (1995), 439

Other languages

German

Vicanit-(Ce)

Spanish

Vicanita-(Ce)

English

Vicanite-(Ce)

French

Vicanite-(Ce)

Russian

Виканит-(Ce)

CNMNC (IMA)-Number

IMA 1991-050

CNMNC symbol

Symbol

Vic-Ce

IDs

GUSID (Global unique identifier short form) LkMo5_b720KGnDABVhpdqQ
GUID (Global unique identifier) E728432E-FBF6-42DB-869C-3001561A5DA9
Database ID 4055