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Törnebohmite-(Ce) (Törnebohmit-(Ce))

Pictures (3 Images total)

Torneböhmit-(Ce) und Ferriallanit-(Ce)
Views (File:
1306014933
): 1551
Torneböhmit-(Ce) und Ferriallanit-(Ce)
Gelbe Torneböhmit-(Ce)- und schwarze Ferriallanit-(Ce)-Körner in Calcit; Bildbreite: 5 mm; Fundort: Biraya, Bodaibo-Stadt, Irkutsk Oblast, Russland
Copyright: Pavel M. Kartashov; Contribution: Philip Blümner
Location: Russland/Sibirien, Föderationskreis/Irkutsk (Irkutskaja), Oblast/Bodaybinsky, Rajon/Bodaibo/Biraya Fe-SE-Vorkommen
Mineral: Ferriallanite-(Ce), Törnebohmite-(Ce)
Image: 1306014933
Rating: 4 (votes: 1)
License: Usage for Mineralienatlas project only
Torneböhmit-(Ce) und Ferriallanit-(Ce)

Gelbe Torneböhmit-(Ce)- und schwarze Ferriallanit-(Ce)-Körner in Calcit; Bildbreite: 5 mm; Fundort: Biraya, Bodaibo-Stadt, Irkutsk Oblast, Russland

Copyright: Pavel M. Kartashov
Contribution: Philip Blümner 2011-05-21
Locality: Biraya Fe-SE-Vorkommen / Bodaibo / Bodaybinsky, Rajon / Irkutsk (Irkutskaja), Oblast / Sibirien, Föderationskreis / Russland
Yttrofluorit, Torneböhmit-(Ce)
Views (File:
1308513706
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Yttrofluorit, Torneböhmit-(Ce)
Größe: 60x35x33 mm; Fundort: Stetind, Tysfjord, Provinz Nordland, Norwegen
Copyright: Philip Blümner; Contribution: Philip Blümner
Location: Norwegen/Nordland, Provinz/Narvik, Kommune/Stetind Pegmatit
Mineral: Törnebohmite-(Ce), Yttrofluorite
Image: 1308513706
License: Usage for Mineralienatlas project only
Yttrofluorit, Torneböhmit-(Ce)

Größe: 60x35x33 mm; Fundort: Stetind, Tysfjord, Provinz Nordland, Norwegen

Copyright: Philip Blümner
Contribution: Philip Blümner 2011-06-19
Locality: Stetind Pegmatit / Narvik, Kommune / Nordland, Provinz / Norwegen
Thörnebohmit-(Ce) (schwarz) und Cerit-(Ce) (grau-rosa)
Views (File:
1555077174
): 512
Thörnebohmit-(Ce) (schwarz) und Cerit-(Ce) (grau-rosa)
Bastnäs, Riddarhyttan, Västmansland, Schweden. 5,5x4cm.
Copyright: Doc Diether; Contribution: Doc Diether
Collection: Doc Diether
Location: Schweden/Västmanlands, Provinz/Skinnskatteberg/Riddarhyttan/Bastnäs
Mineral: Cerite-(CeCa), Törnebohmite-(Ce)
Image: 1555077174
License: Usage for Mineralienatlas project only
Thörnebohmit-(Ce) (schwarz) und Cerit-(Ce) (grau-rosa)

Bastnäs, Riddarhyttan, Västmansland, Schweden. 5,5x4cm.

Collection: Doc Diether
Copyright: Doc Diether
Contribution: Doc Diether 2019-04-12
Locality: Bastnäs / Riddarhyttan / Skinnskatteberg / Västmanlands, Provinz / Schweden

Collectors Summary

Color olivgrün
Streak color weiß
Hardness (Mohs) 4.5
Solubility ++ heiße konz. HCl
Crystal System monoklin, P21/c

Chemism

Chemical formula

(Ce,La)2Al(SiO4)2(OH)

Chemical composition

Aluminium, Cerium, Lanthanum, Silicium, Sauerstoff, Wasserstoff

Unit weight: 507.7823252 u; Number of atoms in the formula: 15

Info

Empirical formula:

(Ce0.75La0.25)2Al(SiO4)2(OH)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.20

1

6.67

1.0079470

1.0079470

Oxygen

O

28.36

9

60.00

15.9994300

143.9948700

Aluminium

Al

5.31

1

6.67

26.9815382

26.9815382

Silicon

Si

11.06

2

13.33

28.0855300

56.1710600

Lanthanum

La

13.68

0.5

3.33

138.9055200

69.4527600

Cerium

Ce

41.39

1.5

10.00

140.1161000

210.1741500

Strunz 9th edition incl. updates

9.AG.45

9: Silikate (Germanate)
A: Inselsilikate (Nesosilikate)
G: Insel(Neso)silikate mit zusätzlichem Anionen; Kationen in meist [6] und > [6] Koordination
45:

Lapis Classification

VIII/B.19-030

VIII: SILIKATE
B: Inselsilikate mit tetraederfremden Anionen
19: Kationen mit Koordinationszahlen zwischen [8] und [12]

Classification by Hölzel

9.AI.500

9: SILICATES
A: Nesosilicates
I: Nesosilicates with OH
5: With REE's

Dana 8th edition

52.04.05.01

52: Nesosilicates Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O
04: Nesosilicates Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or > [6] coordination
05: Tornebohmite group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

olivgrün

Streak color

weiß

max. Birefringence

0.033

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

1.845

RI value β

1.852

RI value γ / ε

1.878

Ri mean

1.858

2V angle

Biaxial (+) 26°

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/c

Cell parameters a (Å)

7.383

Cell parameters b (Å)

5.673

Cell parameters c (Å)

16.937

Cell parameters a/b or c/a

1.301

Cell parameters c/b

2.986

Cell parameters α

90°

Cell parameters β

112.3

Cell parameters γ

90°

Z

4

Volume (ų)

656.33

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

4.5

VHN (Hardness Vickers)

280 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

5.17 (berechnet)

5.139 ( ρ calc. Mineralienatlas )

Instability

++ heiße konz. HCl

Preface

Author (Name, Year)

Geijer, 1921

References

American Mineralogist 51 (1966), 152

Other languages

German

Törnebohmit-(Ce)

Spanish

Törnebohmita-(Ce)

English

Törnebohmite-(Ce)

French

Törnebohmite-(Ce)

Russian

Торнебомит-(Ce)

CNMNC symbol

Symbol

Tbh-Ce

Locations with GPS information

IDs

GUSID (Global unique identifier short form) 5LWhPYCHHE6qbyFIlObOfg
GUID (Global unique identifier) 3DA1B5E4-8780-4E1C-AA6F-214894E6CE7E
Database ID 3732