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Byelorussite-(Ce)

Additional Functions

Collectors Summary

Color gelb, gelbbraun
Streak color weiß
Hardness (Mohs) 5.50 - 6.00
Crystal System orthorhombisch, Ama2

Chemism

Chemical formula

NaBa2(Ce,La)2Mn2+Ti2Si8O26(F,OH)·H2O

Chemical composition

Barium, Cerium, Lanthanum, Mangan, Natrium, Silicium, Titan, Fluor, Sauerstoff, Wasserstoff

Unit weight: 1405.1297207875 u; Number of atoms in the formula: 46.25

Info

Empirical formula:

NaBa2(Ce0.75La0.25)2MnTi2Si8O26(F0.75(OH)0.25)·H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.16

2.25

4.86

1.0079470

2.2678808
Oxygen

O

31.03

27.25

58.92

15.9994300

435.9844675
Fluorine

F

1.01

0.75

1.62

18.9984033

14.2488024
Sodium

Na

1.64

1

2.16

22.9897702

22.9897702
Silicon

Si

15.99

8

17.30

28.0855300

224.6842400
Titanium

Ti

6.81

2

4.32

47.8671000

95.7342000
Manganese

Mn

3.91

1

2.16

54.9380499

54.9380499
Barium

Ba

19.55

2

4.32

137.3277000

274.6554000
Lanthanum

La

4.94

0.5

1.08

138.9055200

69.4527600
Cerium

Ce

14.96

1.5

3.24

140.1161000

210.1741500

Analysis wt%

Na2O : 2.08, K2O : 0.40, SrO : 0.43, BaO : 20.58, MnO : 2.58, FeO : 0.82, ZnO : 1.58, Ce2O3 : 12.13, La2O3 : 8.33, Pr2O3 : 0.58, Nd2O3 : 2.30, SiO2 : 33.98, TiO2 : 11.35, H2O : 1.44, F : 0.98, Ln2O3 : 23.59 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 89)

Strunz 9th edition incl. updates

9.CE.25

9: Silikate (Germanate)
C: Ringsilikate (Cyclosilikate)
E: [Si4O12]8- vierer-Einfachringe, ohne inselartige komplexe [Anionen]
25:

Lapis Classification

VIII/E.08-085

VIII: SILIKATE
E: Ringsilikate
8: Viererringe [Si4O12] 8-; Joaquinit-Gruppe und Verwandte

Classification by Hölzel

9.CB.305

9: SILICATES
C: Cyclosilicates
B: ~[Si4O12]8-, ~[Si4O10]4--Rings
3: Joaquinite-Group

Dana 8th edition

60.01.01b.04

60: Cyclosilicates Cyclosilicate Four-Membered Rings
01: Cyclosilicates Cyclosilicate Four-Membered Rings as Titanosilicates
01b: Joaquinite group (Ortho-joaquinite subgroup)

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Joaquinite group

Optical Properties

Color

gelb, gelbbraun

Streak color

weiß

max. Birefringence

0.077
Birefringence chart\! Byelorussite-(Ce) title=Birefringence chart Byelorussite-(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

1.743

RI value β

1.760

RI value γ / ε

1.820

Ri mean

1.774

2V angle

Biaxial (+) 60°~

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mm2

Space Group number

40

Space Group

Ama2

Cell parameters a (Å)

10.609

Cell parameters b (Å)

9.618

Cell parameters c (Å)

22.39

Cell parameters a/b or c/a

1.103

Cell parameters c/b

2.328

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

4

Volume (ų)

2284.617

X-Ray Powder Diffraction

4.42(60),
4.29(40),
3.30(40),
3.00(70),
2.95(60),
2.91(50),
2.783(100),
2.606(50)
XRD chart Byelorussite-(Ce)

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

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

5.50 - 6.00

VHN (Hardness Vickers)

630 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.92 (gemessen)

4.085 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Weißrussland/Homelskaja (Gomelskaja), Woblasz/Schytkawitschy (Zhitkovitschskii), Rajon/Diabazovoye SE-Be-Lagerstätte

Preface

Author (Name, Year)

Shpanov & Nechelyustov & Baturin & Solntseva, 1989

References

Crystallography Reports 46 (2004), 964

IMA group assignments

Other languages

German

Byelorussit-(Ce)

Spanish

Byelorussita-(Ce)

English

Byelorussite-(Ce)

French

Byelorussite-(Ce)

Russian

Белоруссит-(Ce)

Alternative Name

Russian

Белоруссит

CNMNC symbol

Symbol

Bye-Ce

IDs

GUSID (Global unique identifier short form) LF9TgXZJJ02jgHsRUzyU2A
GUID (Global unique identifier) 81535F2C-4976-4D27-A380-7B11533C94D8
Database ID 539