https://www.mineralbox.biz
https://www.edelsteine-neuburg.de
https://www.mineraliengrosshandel.com
https://www.mineral-bosse.de
'._('einklappen').'
 

Percleveite-(Ce)

Pictures (1 Images total)

rosa Perclevit-(Ce)-Fragment in Ferriallanit-(Ce)
Views (File:
1208249449
): 1000
rosa Perclevit-(Ce)-Fragment in Ferriallanit-(Ce)
Größe: 0,8 mm; Fundort: Ulyn Khuren, Khaldzan Buragtag massif, Altai-Hochgebirge, Hovd Aimag (Khovd Aimag), Mongolei; einziger bekannter Kristall des Vorkommens - sonst ist Perclevit-(Ce) durch Ferriallanit-(Ce) ersetzt.
Copyright: Pavel M. Kartashov; Contribution: slugslayer
Location: Mongolei/Chowd, Aimag/Altai-Hochgebirge/Khaldzan-Buragtag-Massiv/Ulyn Khuren
Mineral: Percleveite-(Ce)
Image: 1208249449
License: Usage for Mineralienatlas project only
rosa Perclevit-(Ce)-Fragment in Ferriallanit-(Ce)

Größe: 0,8 mm; Fundort: Ulyn Khuren, Khaldzan Buragtag massif, Altai-Hochgebirge, Hovd Aimag (Khovd Aimag), Mongolei; einziger bekannter Kristall des Vorkommens - sonst ist Perclevit-(Ce) durch Fer...

Copyright: Pavel M. Kartashov
Contribution: slugslayer 2008-04-15
Locality: Ulyn Khuren / Khaldzan-Buragtag-Massiv / Altai-Hochgebirge / Chowd, Aimag / Mongolei

Collectors Summary

Color gelblich-grau bis weiß
Streak color weiß
Lustre Fettglanz- bis Harzglanz
Hardness (Mohs) 6
Cleavages unvollkommen {001}
Crystal System tetragonal, P41

Chemism

Chemical formula

(Ce,La,Nd)2[Si2O7]

Chemical composition

Cerium, Lanthanum, Neodymium, Silicium, Sauerstoff

Unit weight: 448.498302 u; Number of atoms in the formula: 11

Info

Empirical formula:

(Ce0.6La0.3Nd0.1)2[Si2O7]

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

24.97

7

63.64

15.9994300

111.9960100

Silicon

Si

12.52

2

18.18

28.0855300

56.1710600

Lanthanum

La

18.58

0.6

5.45

138.9055200

83.3433120

Cerium

Ce

37.49

1.2

10.91

140.1161000

168.1393200

Neodymium

Nd

6.43

0.2

1.82

144.2430000

28.8486000

Analysis wt%

SiO2 : 26.55, La2O3 : 14.66, Ce2O3 : 31.36, Pr2O3 : 3.41, Nd2O3 : 12.97, Sm2O3 : 2.69, Gd2O3 : 2.26, Dy2O3 : 0.53, Y2O3 : 2.93, Ln2O3 : 71.13 (Ref: European Journal of Mineralogy 2003)

Strunz 9th edition incl. updates

9.BC.35

9: Silikate (Germanate)
B: Gruppensilikate (Sorosilikate)
C: Si2O7 Gruppen, ohne nicht-tetrahedrale Anionen; Kationen in oktahedraler [6] und/oder anderer Koordination
35:

Lapis Classification

VIII/C.01-045

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

Classification by Hölzel

9.BA.400

9: SILICATES
B: Sorosilicates
A: Thortveitite-Group

Dana 8th edition

55.02.04.01

55: Sorosilicate Minerals
02: Sorosilicates Sorosilicate Si2O7 Groups, Generally with No Additional Anions with cations in [6] coordination

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

gelblich-grau bis weiß

Streak color

weiß

Lustre

Fettglanz- bis Harzglanz

max. Birefringence

0.006

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

1.840

RI value γ / ε

1.846

Ri mean

1.842

2V angle

Uniaxial (+)

Optical Data Luminescence

Luminescence

keine Fluoreszenz bekannt

Crystallography

Crystal System

tetragonal

Class (H-M)

4

Space Group number

76

Space Group

P41

Cell parameters a (Å)

6.781

Cell parameters b (Å)

-

Cell parameters c (Å)

24.689

Cell parameters a/b or c/a

3.641

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

8

Volume (ų)

1135.249

X-Ray Powder Diffraction

3.360(20),
3.271(30),
3.135(30),
3.121(20),
3.084(100),
3.011(20),
2.846(20),
2.034(20)

XRD chart Percleveite-(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)

6

VHN (Hardness Vickers)

730 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

5.21

5.248 ( ρ calc. Mineralienatlas )

Cleavages

unvollkommen {001}

Preface

Occurrences

Bastnäs, der berühmten Eisen/Kupfer/Seltenerden Lagerstätte im Erzrevier Riddarhyttan bei Skinnskatteberg, Västmanland, schweden

Author (Name, Year)

Holtstam & Norrestam & Andersson, 2003

References

European Journal of Mineralogy 15 (2003), 725

Other languages

German

Percleveit-(Ce)

English

Percleveite-(Ce)

French

Percleveite-(Ce)

Spanish

Percleveíta-(Ce)

Russian

Перклевеит-(Ce)

Traditional Chinese

矽鑭鈰石

Simplified Chinese

硅镧铈石

CNMNC (IMA)-Number

IMA 2002-023

CNMNC symbol

Symbol

Pcv-Ce

Locations with GPS information

IDs

GUSID (Global unique identifier short form) LTwC169BqkOWA7TfRlrYTQ
GUID (Global unique identifier) D7023C2D-41AF-43AA-9603-B4DF465AD84D
Database ID 2991