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Telyushenkoite

Collectors Summary

Color farblos bis weiß
Streak color weiß
Lustre Glasglanz
Hardness (Mohs) 6
Cleavages deutlich
Crystal System trigonal, P3m1
Morphology eckige Körner bis 2 cm Größe

Chemism

Chemical formula

(Cs,Na,K)Na6[F2|Be2Al3Si15O39]

Chemical composition

Aluminium, Beryllium, Cäsium, Natrium, Silicium, Fluor, Kalium, Sauerstoff

Unit weight: 1410.71516016 u; Number of atoms in the formula: 68

Info

Empirical formula:

(Cs0.6Na0.3K0.1)Na6[F2Be2Al3Si15O39]

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Beryllium

Be

1.28

2

2.94

9.0121823

18.0243646

Oxygen

O

44.23

39

57.35

15.9994300

623.9777700

Fluorine

F

2.69

2

2.94

18.9984033

37.9968065

Sodium

Na

10.27

6.3

9.26

22.9897702

144.8355523

Aluminium

Al

5.74

3

4.41

26.9815382

80.9446146

Silicon

Si

29.86

15

22.06

28.0855300

421.2829500

Potassium

K

0.28

0.1

0.15

39.0983100

3.9098310

Caesium

Cs

5.65

0.6

0.88

132.9054520

79.7432712

Analysis wt%

SiO2 : 64.32, Al2O3 : 7.26, ZnO : 1.71, BeO : 3.46, Na2O : 13.53, K2O : 0.47, Cs2O : 7.25, F : 2.84 (Ref: Canadian Mineralogist 2002)

Strunz 9th edition incl. updates

9.EH.25

9: Silikate (Germanate)
E: Schichtsilikate (Phyllosilikate)
H: Übergangsstrukturen zwischen Schichtsilikaten und anderen Silikaten
25:Leifit-Gruppe

Lapis Classification

VIII/J.10-020

VIII: SILIKATE
J: Gerüstsilikate (mit Zeolithen)
10: Mit tetraederfremden Anionen

Classification by Hölzel

9.FJ.330

9: SILICATES
F: Tektosilicates
J: Singly connected 4-Ring Chains

Dana 8th edition

78.07.10.02

78: Unclassified Silicate Minerals
07: Unclassified silicates wholly unclassified silicates

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos bis weiß

Streak color

weiß

Lustre

Glasglanz

max. Birefringence

0.005

Birefringence chart\! Telyushenkoite title=Birefringence chart Telyushenkoite

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

1.526

RI value γ / ε

1.531

Ri mean

1.528

2V angle

Uniaxial (+)

Optical Data Luminescence

Luminescence

matte lilafarbene Fluoreszenz im kurzwelligen UV-Licht

Color SW-UV (254nm)

 

violett

SW-UV Intensity

sehr schwach

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

trigonal

Class (H-M)

3m

Space Group number

164

Space Group

P3m1

Cell parameters a (Å)

14.377

Cell parameters b (Å)

-

Cell parameters c (Å)

4.879

Cell parameters a/b or c/a

0.339

Cell parameters c/b

-

Z

1

Volume (ų)

873.369

X-Ray Powder Diffraction

6.226(30),
4.149(50),
3.456(40),
3.382(70),
3.162(100),
3.113(40),
2.465(30),
2.396(20)

XRD chart Telyushenkoite

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

Morphology

eckige Körner bis 2 cm Größe

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

6

VHN (Hardness Vickers)

714 (100g)

Density (g/cm³)

2.73

2.682 ( ρ calc. Mineralienatlas )

Cleavages

deutlich

Preface

Occurrences

Den höchst seltenen Telyushenkoit kennt man bisher nur von der Gletschermoräne Dara-i-Pioz, Tadshikistau

Associations

ReedmergneritMikroklin, Pektolith, Kentbrooksit, Polylithionit, Albfit
Verwachsungen mit Hyalotekit, Shibkovit, Nordit-(Ce), Leukophan

Author (Name, Year)

Sokolova & Huminicki & Hawthorne & Agakhanov & Pautov & Grew, 2002

Additional Information

Das neue Caesium-Beryllosilikat mit Gerüststruktur ist das Cs-Analogon zu Leifit

References

New Data on Minerals 38 (2003), 5

Other languages

German

Telyushenkoit

English

Telyushenkoite

French

Telyushenkoite

Spanish

Telyushenkoíta

Russian

Телюшенкоит

Traditional Chinese

氟鈹矽銫鈉石

Simplified Chinese

氟铍硅铯钠石

CNMNC (IMA)-Number

IMA 2001-012

CNMNC symbol

Symbol

Tys

Locations with GPS information

IDs

GUSID (Global unique identifier short form) wQTGY2XYmUiJTeKImSol4Q
GUID (Global unique identifier) 63C604C1-D865-4899-894D-E288992A25E1
Database ID 3787