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Trilithionite (Trilithionit)

Pictures (1 Images total)

Trilithionit
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Trilithionit
Braunvioletter schuppiger Trilithionit (ehemals 'Lepidolith'); Stufengröße: 3,2 x 2,8 cm,; Fundort: Rubicon-Lithium-Mine, Karibib, Namibia
Copyright: McSchuerf; Contribution: Mineralienatlas
Location: Namibia/Erongo, Region/Karibib, Kreis/Rubicon Mine (Rubikon Mine)
Mineral: Trilithionite
Image: 1107624530
Rating: 3.67 (votes: 3)
License: Usage for Mineralienatlas project only
Trilithionit

Braunvioletter schuppiger Trilithionit (ehemals 'Lepidolith'); Stufengröße: 3,2 x 2,8 cm,; Fundort: Rubicon-Lithium-Mine, Karibib, Namibia
Copyright: McSchuerf
Contribution: Mineralienatlas 2005-02-05
Locality: Rubicon Mine (Rubikon Mine) / Karibib, Kreis / Erongo, Region / Namibia

Collectors Summary

Color weiß
Streak color weiß
Crystal System monoklin, C2/m

Chemism

Chemical formula

KLi1.5Al1.5[F2|AlSi3O10]

Chemical composition

Aluminium, Lithium, Silicium, Fluor, Kalium, Sauerstoff

Unit weight: 399.211652 u; Number of atoms in the formula: 20

Info

Empirical formula:

KLi1.5Al1.5[F2AlSi3O10]

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Lithium

Li

2.61

1.5

7.50

6.9412000

10.4118000
Oxygen

O

40.08

10

50.00

15.9994300

159.9943000
Fluorine

F

9.52

2

10.00

18.9984033

37.9968065
Aluminium

Al

16.90

2.5

12.50

26.9815382

67.4538455
Silicon

Si

21.11

3

15.00

28.0855300

84.2565900
Potassium

K

9.79

1

5.00

39.0983100

39.0983100

Analysis wt%

SiO2 : 46.33, Al2O3 : 27.14, FeO : 0.44, MnO : 0.80, Li2O : 5.50, Na2O : 0.55, K2O : 9.93, F : 7.08, H2O : 2.00 (Ref: European Journal of Mineralogy 2005)

Strunz 9th edition incl. updates

9.EC.20

9: Silikate (Germanate)
E: Schichtsilikate (Phyllosilikate)
C: Schichtsilikate (Phyllosilikate) mit Glimmer Tafeln, zusammengesetzt aus tetrahedralen oder octahedralen Netzen
20:Phlogopit-Gruppe

Lapis Classification

VIII/H.11-050

VIII: SILIKATE
H: Schichtsilikate
11: Glimmerartige Schicht-silikate mit Baugruppen [Si4O10] 4- und verwandte Strukturen; Glimmer-Gruppe; Lithionit/Biotit-Reihe

Classification by Hölzel

9.ED.280

9: SILICATES
E: Phyllosilicates
D: Biotite-Group

IMA status

Neudefinition von der CNMNC anerkannt

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Mica group  ⇒ True micas

Optical Properties

Color

weiß

Streak color

weiß

Diaphaneity (Transparency)

durchscheinend

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell parameters a (Å)

9.056

Cell parameters b (Å)

5.216

Cell parameters c (Å)

20.282

Cell parameters a/b or c/a

1.736

Cell parameters c/b

3.888

Cell parameters α

90°

Cell parameters β

99.63

Cell parameters γ

90°

Z

4

Volume (ų)

944.542

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

2.807 ( ρ calc. Mineralienatlas )

Preface

Author (Name, Year)

Flink, 1900

References

European Journal of Mineralogy 17 (2005), 475

IMA group assignments

Other languages

German

Trilithionit

English

Trilithionite

French

Trilithionite

Spanish

Trilitionita

Russian

Трилитионит

Alternative Name

Spanish

Trilithionita

CNMNC symbol

Symbol

Tln

Locations with GPS information

IDs

GUSID (Global unique identifier short form) rykeWmX8EEieQZ-THJIFJg
GUID (Global unique identifier) 5A1E29AF-FC65-4810-9E41-9F931C920526
Database ID 3902