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Tritomite-(Ce) (Tritomit-(Ce))

Pictures (4 Images total)

Tritomit-(Ce)
Views (File:
1245044288
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Tritomit-(Ce)
Bildbreite: 12 mm; Fundort: Burpala, Irkutsk Oblast, Sibirien, Russland
Copyright: Pavel M. Kartashov; Contribution: slugslayer
Location: Russland/Ferner Osten, Föderationskreis/Burjatien (Buryatia), Republik/Burpala
Mineral: Tritomite-(Ce)
Image: 1245044288
Rating: 7.67 (votes: 3)
License: Usage for Mineralienatlas project only
Tritomit-(Ce)

Bildbreite: 12 mm; Fundort: Burpala, Irkutsk Oblast, Sibirien, Russland
Copyright: Pavel M. Kartashov
Contribution: slugslayer 2009-06-15
Locality: Burpala / Burjatien (Buryatia), Republik / Ferner Osten, Föderationskreis / Russland
Tritomit-(Ce)
Views (File:
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Tritomit-(Ce)
Größe: 80x60x30 mm; Fundort: Burpala, Irkutsk Oblast, Sibirien, Russland
Copyright: Pavel M. Kartashov; Contribution: slugslayer
Location: Russland/Ferner Osten, Föderationskreis/Burjatien (Buryatia), Republik/Burpala
Mineral: Tritomite-(Ce)
Image: 1245044324
Rating: 7 (votes: 1)
License: Usage for Mineralienatlas project only
Tritomit-(Ce)

Größe: 80x60x30 mm; Fundort: Burpala, Irkutsk Oblast, Sibirien, Russland
Copyright: Pavel M. Kartashov
Contribution: slugslayer 2009-06-15
Locality: Burpala / Burjatien (Buryatia), Republik / Ferner Osten, Föderationskreis / Russland
Tritomit-(Ce)
Views (File:
1245044196
): 883
Tritomit-(Ce)
Bildbreite: 12 mm; Fundort: Burpala, Irkutsk Oblast, Sibirien, Russland
Copyright: Pavel M. Kartashov; Contribution: slugslayer
Location: Russland/Ferner Osten, Föderationskreis/Burjatien (Buryatia), Republik/Burpala
Mineral: Tritomite-(Ce)
Image: 1245044196
License: Usage for Mineralienatlas project only
Tritomit-(Ce)

Bildbreite: 12 mm; Fundort: Burpala, Irkutsk Oblast, Sibirien, Russland
Copyright: Pavel M. Kartashov
Contribution: slugslayer 2009-06-15
Locality: Burpala / Burjatien (Buryatia), Republik / Ferner Osten, Föderationskreis / Russland
Tritomit-(Ce)
Views (File:
1245044263
): 862
Tritomit-(Ce)
Bildbreite: 12 mm; Fundort: Burpala, Irkutsk Oblast, Sibirien, Russland
Copyright: Pavel M. Kartashov; Contribution: slugslayer
Location: Russland/Ferner Osten, Föderationskreis/Burjatien (Buryatia), Republik/Burpala
Mineral: Tritomite-(Ce)
Image: 1245044263
License: Usage for Mineralienatlas project only
Tritomit-(Ce)

Bildbreite: 12 mm; Fundort: Burpala, Irkutsk Oblast, Sibirien, Russland
Copyright: Pavel M. Kartashov
Contribution: slugslayer 2009-06-15
Locality: Burpala / Burjatien (Buryatia), Republik / Ferner Osten, Föderationskreis / Russland

Collectors Summary

Color dunkel rotbraun, amber, schwarz
Streak color gelblichgrün
Lustre Harzglanz
Hardness (Mohs) 5.5
Solubility +++ HCl
Crystal System hexagonal, P63/m

Chemism

Chemical formula

Ce5(SiO4,BO4)3(OH,O)

Chemical composition

Cerium, Silicium, Bor, Sauerstoff, Wasserstoff

Unit weight: 980.63026775 u; Number of atoms in the formula: 21.75

Info

Empirical formula:

Ce5((SiO4)0.75(BO4)0.25)3((OH)0.75O0.25)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.08

0.75

3.45

1.0079470

0.7559603
Boron

B

0.83

0.75

3.45

10.8117000

8.1087750
Oxygen

O

21.21

13

59.77

15.9994300

207.9925900
Silicon

Si

6.44

2.25

10.34

28.0855300

63.1924425
Cerium

Ce

71.44

5

22.99

140.1161000

700.5805000

Analysis wt%

SiO2 : 17.62, B2O3 : 10.53, Al2O3 : 1.20, Fe2O3 : 1.80, CaO : 9.66, La2O3 : 7.96, Ce2O3 : 17.74, Pr2O3 : 1.52, Nd2O3 : 6.03, Sm2O3 : 0.91, Gd2O3 : 1.37, Dy2O3 : 1.37, Er2O3 : 0.86, Yb2O3 : 0.71, Y2O3 : 11.66, ThO2 : 2.32, U3O8 : 0.46, H2O : 4.98, F : 1.05, Ln2O3 : 50.68 (Ref: Canadian Mineralogist 73)

Strunz 9th edition incl. updates

9.AH.25

9: Silikate (Germanate)
A: Inselsilikate (Nesosilikate)
H: Insel(Neso)silikate mit CO3, SO4, PO4, etc.
25:Britholith-Gruppe

Lapis Classification

VIII/B.33-040

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

Classification by Hölzel

8.BO.863

8: PHOSPHATES ARSENATES VANADATES
B: Phosphates (+Anions -Water)
O: Apatite Supergroup
8: Phosphate or Boro Silico Apatites - Britholites

Dana 8th edition

54.02.05.01

54: Nesosilicates Nesosilicate Borosilicates and Some Beryllosilicates
02: Nesosilicates Nesosilicate Borosilicates and Some Beryllosilicates with B in [4] coordination
05: Tritomite group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Apatite Supergroup  ⇒ Britholite group

Optical Properties

Color

dunkel rotbraun, amber, schwarz

Streak color

gelblichgrün

Diaphaneity (Transparency)

durchscheinend

Lustre

Harzglanz

RI value α / ω / n

1.685 - 1.763

Ri mean

1.704

Crystallography

Crystal System

hexagonal

Class (H-M)

6/m

Space Group number

176

Space Group

P63/m

Cell parameters a (Å)

9.35

Cell parameters b (Å)

-

Cell parameters c (Å)

6.88

Cell parameters a/b or c/a

0.736

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

2

Volumne (ų)

520.886

X-Ray Powder Diffraction

3.44(40),
3.08(30),
2.81(100),
2.70(30),
1.94(30),
1.84(40),
1.74(30),
1.24(40)
XRD chart Tritomite-(Ce)

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

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

5.5

VHN (Hardness Vickers)

544

Density (g/cm³)

4.2 (gemessen) 4.94 (berechnet)

6.252 ( ρ calc. Mineralienatlas )

Instability

+++ HCl

(Co-)Type locality

(Co-)Type locality

Norwegen/Vestfold og Telemark, Provinz/Larvik/Langesundsfjord/Laven (Skadön)

Type material

National Museum of Natural History, Washington, D.C., USA

Collection number of type material

R1297

Preface

Name from

Vom Griechen für dreifach "tria" und zu schneiden "tome", die dreieckige, pseudovierflächige Gestalt von Hohlräumen beschreibend, die durch das Mineral im Gangerz zurückgelassen wurden und Cerium für die Zusammensetzung.

Author (Name, Year)

Berlin & Weibye, 1849

Safety Instructions

Industrial chemicals are often present in powder form and therefore often contain much higher dangers than natural, crystalline substances. These hazard statements refer to the classification of industrially used chemical compounds that may also occur in this natural mineral. The hazard classification makes no claim to completeness.




Safety classes: Ionizing radiation: Radioaktiv

References

Handbook of Mineralogy (Anthony et al.), 2 (1995), 824

Weibye, P. C. - Neue Mineralien aus Norwegen, Annalen der Physik und Chemie 79 (1850), 299-304

American Mineralogist (1962): 47: 9-25.

IMA group assignments

Other languages

German

Tritomit-(Ce)

Spanish

Tritomita-(Ce)

English

Tritomite-(Ce)

French

Tritomite-(Ce)

Russian

Тритомит-(Ce)

CNMNC symbol

Symbol

Tto-Ce

Locations with GPS information