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Cookeite

Pictures (14 Images total)

Tantalit-(Fe), Cookeit
Views (Image: 1295778281): 3788
Tantalit-(Fe), Cookeit

Tantalit-(Fe)-Kristalle, am Fuße weißer Cookeit; Größe: 45x38x32 mm; Fundort: Ognevka, Kalbagebirge, Ostkasachstan; Ex Wolfgang Henkel Sammlung

Copyright: Dan Weinrich
Contribution: slugslayer 2011-01-23
Locality: Ognevka / Kalba / Belogorski / Schyghys Qasaqstan oblysy (Ostkasachstan) / Kasachstan
Cookeit xx
Views (Image: 1144500629): 2625
Cookeit xx

Fundort: Vorsterbachtal, Rauris, Hohe Tauern, Österreich; Bildbreite: 12 mm

Copyright: loismin
Contribution: loismin 2006-04-08
Locality: Forsterbachtal (Vorsterbachtal) / Raurisertal / Rauris / Zell am See, Bezirk (Pinzgau) / Salzburg / Österreich
Cookeit xx auf Quarz
Views (Image: 1144500405): 2057
Cookeit xx auf Quarz

Fundort: Vorsterbachtal, Wörth, Rauris, Hohe Tauern, Salzburg, Österreich; Bildbreite:12 mm

Copyright: loismin
Contribution: loismin 2006-04-08
Locality: Forsterbachtal (Vorsterbachtal) / Raurisertal / Rauris / Zell am See, Bezirk (Pinzgau) / Salzburg / Österreich
Cookeit
Views (Image: 1261419938): 1682
Cookeit

Größe: 32x21 mm; Fundort: Bennett Quarry, Buckfield, Oxford Co., Maine, USA

Copyright: John Sobolewski
Contribution: slugslayer 2009-12-21
Locality: Bennett Quarry / Buckfield / Oxford Co. / Maine / USA
Cookeit auf Quarz
Views (Image: 1261421212): 1374
Cookeit auf Quarz

Größe: 57x30 mm; Fundort: Saline Co., Arkansas, USA

Copyright: John Sobolewski
Contribution: slugslayer 2009-12-21
Locality: Saline Co. / Arkansas / USA
Cookeit
Views (Image: 1261421155): 597
Cookeit

Größe: 56x50 mm; Fundort: Saline Co., Arkansas, USA

Copyright: John Sobolewski
Contribution: slugslayer 2009-12-21
Locality: Saline Co. / Arkansas / USA

Collectors Summary

Color rosa, gelblich grün, weiß, braun
Streak color weiß
Lustre Perlmuttglanz, Seidenglanz
Hardness (Mohs) 2.5
Crystal System triklin, C1

Chemism

Chem­ical formula

LiAl4(Si3Al)O10(OH)8

Chem­ical com­po­si­tion

Aluminium, Lithium, Silicium, Sauerstoff, Wasserstoff

Unit weight: 522.158797 u; Number of atoms in the formula: 35

Info

Empirical formula:

LiAl4(Si3Al)O10(OH)8

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

1.54

8

22.86

1.0079470

8.0635760

Lithium

Li

1.33

1

2.86

6.9412000

6.9412000

Oxygen

O

55.15

18

51.43

15.9994300

287.9897400

Aluminium

Al

25.84

5

14.29

26.9815382

134.9076910

Silicon

Si

16.14

3

8.57

28.0855300

84.2565900

Anal­y­sis wt%

SiO2 : 32.22, Al2O3 : 51.43, Li2O : 2.60, H2O : 13.70 (Ref: Bulletin de Mineralogie 71)

Strunz 9th edi­tion incl. updates

9.EC.55

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

Lapis Clas­sifica­tion

VIII/H.23-090

VIII: SILIKATE
H: Schichtsilikate
23: Glimmerartige Schicht-silikate mit Baugruppen [Si4O10] 4- und verwandte Strukturen; Chlorit-Gruppe

Clas­sifica­tion by Hölzel

9.EJ.150

9: SILICATES
E: Phyllosilicates
J: SudoiteChlorite-Group

Hey's Chem­ical Index of Min­er­als

16.01.05

16: Silicates Containing Aluminum and other Metals
01: Aluminosilicates of Li

Dana 8th edi­tion

71.04.01.02

71: Phyllosilicate Minerals
04: Phyllosilicates Phyllosilicate Sheets of Six-Membered Rings interlayered 1:1, 2:1, and octahedra
01: Chlorite group (Tri-Dioctahedral)

IMA sta­tus

IMA anerkannt 1976

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Chlorite group

Optical Properties

Color

rosa, gelblich grün, weiß, braun

Streak color

weiß

Lus­tre

Perlmuttglanz, Seidenglanz

max. Birefrin­gence

0.021

Birefringence chart\! Cookeite title=Birefringence chart Cookeite

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

1.574

RI value β

1.582

RI value γ / ε

1.595

Ri mean

1.584

2V angle

Biaxial (+) 40°

Ori­enta­tion

Y = b, X ^ a = 0 bis 3

Dis­per­sion

r < v

Absorp­tion

X = Y > Z

Pleochro­ism

hellgrün, pink, hellgelb, farblos

Optical Data Luminescence

Lumi­nes­cence

fluoresziert

Color LW-UV (365nm)

 

gelblich weiß

LW-UV Intensity

schwach

Color SW-UV (254nm)

 

gelblich weiß

SW-UV Intensity

schwach

SW-UV Other Col­ors

 

grünlich

After­glow (Per­sistant Lumi­nes­cence)

keine Daten

Crystallography

Crystal Sys­tem

triklin

Class (H-M)

1

Space Group number

2

Space Group

C1

Cell param­e­ters a (Å)

5.14

Cell param­e­ters b (Å)

8.93

Cell param­e­ters c (Å)

14.15

Cell param­e­ters a/b or c/a

0.576

Cell param­e­ters c/b

1.585

Cell param­e­ters α

90°

Cell param­e­ters β

96.2

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

645.689

X-Ray Pow­der Diffrac­tion

14.1(80),
7.05(70),
4.70(90),
3.52(90),
2.505(70),
2.315(100),
1.96(50),
1.489(70)

XRD chart Cookeite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

2.5

VHN (Hard­ness Vick­ers)

83 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.7 (gemessen) 2.72 (berechnet)

2.686 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

USA/Maine/Oxford Co./Paris/Mt. Mica Quarry

Preface

Asso­cia­tions

Elbait, Morganit, Quarz, Fluorapatit, Bertrandit

Author (Name, Year)

Brush, 1866

Col­lector informa­tion

gelbliche Plättchen auf Quarz xx

References

American Mineralogist 47 (1962), 819.

American Mineralogist 60 (1975), 1041.

Clays and Clay Minerals 37 (1989), 193.

American Mineralogist 81 (1996), 67.

Handbook of Mineralogy (Anthony u.w.), 2 (1995).

IMA group assignments

 
(Fe,Mg,Al)6(Si,Al)4O10(OH)8
 
 

 
 
(Zn,Fe2+,Al,Mg)6(Si,Al)4O10(OH)8
triklin
C1, C1

 
 
Li1-1.5Al4-3.5[(OH,F)8|(B,Al)Si3O10]
monoklin
C2/m

 
 
(Fe2+,Mg,Fe3+)5Al(Si3Al)O10(OH,O)8
monoklin
C2/m

 
 
(Mg,Fe2+)5Al(Si3Al)O10(OH)8
monoklin
C2/m

 
 
LiAl4(Si3Al)O10(OH)8
triklin
C1

 
 
Al2.3[(OH)8|AlSi3O10]
monoklin
C2

 
 
Ca2(Fe3+,Al)Mn3+Mn32+Zn2Si2O10(OH)8
monoklin
C2

 
 
NaMg6[(OH,O)8|AlSi3O10]·H2O
triklin
C1

 
 
Mn2+5Fe3+(Si3Fe3+O10)(OH)8
orthorhombisch
 

 
 
(Ni,Mg,Fe2+)5Al(Si3Al)O10(OH)8
monoklin
C2/m

 
 
(Fe2+,Mg,Fe3+)5Al(Si3Al)O10(OH,O)8
orthorhombisch
 

 
 
Mn2+5Al(Si3Al)O10(OH)8
monoklin
C2/m

 
 
Mg2Al3(Si3Al)O10(OH)8
monoklin
C2/m

Refresh list

Actuality: 18. Apr 2021 - 05:07:54

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Nimite

(Ni,Mg,Fe2+)5Al(Si3Al)O10(OH)8

monoklin : 2/m : C2/m

9.EC.55

Odinite

(Fe3+,Mg,Al,Fe2+,Ti,Mn)2.4(Si1.8Al0.2)O5(OH)4

9.EC.55

Sudoite

Mg2Al3(Si3Al)O10(OH)8

monoklin : 2/m : C2/m

9.EC.55

'Chlorite group'

(Fe,Mg,Al)6(Si,Al)4O10(OH)8

9.EC.55

Cookeite

LiAl4(Si3Al)O10(OH)8

triklin : 1 : C1

9.EC.55

Chamosite

(Fe2+,Mg,Fe3+)5Al(Si3Al)O10(OH,O)8

monoklin : 2/m : C2/m

9.EC.55

'Delessite' (Var.v. Chamosite)

(Mg,Fe,Fe,Al)(Si,Al)4O10(O,OH)8

9.EC.55

Gonyerite

Mn2+5Fe3+(Si3Fe3+O10)(OH)8

9.EC.55

Donbassite

Al2.3[(OH)8|AlSi3O10]

monoklin : 2 : C2

9.EC.55

'Odinite-1T' (Pol.v. Odinite)

(Fe,Mg,Al)2.5(Si,Al)2O5(OH)4

9.EC.55

Pennantite

Mn2+5Al(Si3Al)O10(OH)8

monoklin : 2/m : C2/m

9.EC.55

Glagolevite

NaMg6[(OH,O)8|AlSi3O10]·H2O

triklin : 1 : C1

9.EC.55

Clinochlore

(Mg,Fe2+)5Al(Si3Al)O10(OH)8

monoklin : 2/m : C2/m

9.EC.55

Baileychlore

(Zn,Fe2+,Al,Mg)6(Si,Al)4O10(OH)8

triklin : 1, 1 : C1, C1

9.EC.55

Borocookeite

Li1-1.5Al4-3.5[(OH,F)8|(B,Al)Si3O10]

monoklin : 2/m : C2/m

9.EC.55

'Chromian Clinochlore' (Var.v. Clinochlore)

Mg5(Al,Cr)2Si3O10(OH)8

9.EC.55

'Orthochamosite' (Pol.v. Chamosite)

(Fe2+,Mg,Fe3+)5Al(Si3Al)O10(OH,O)8

9.EC.55

Franklinfurnaceite

Ca2(Fe3+,Al)Mn3+Mn32+Zn2Si2O10(OH)8

monoklin : 2 : C2

9.EC.55

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Donbassite

Al2.3[(OH)8|AlSi3O10]

monoklin : 2 : C2

VIII/H.23-005

Sudoite

Mg2Al3(Si3Al)O10(OH)8

monoklin : 2/m : C2/m

VIII/H.23-010

Clinochlore

(Mg,Fe2+)5Al(Si3Al)O10(OH)8

monoklin : 2/m : C2/m

VIII/H.23-020

Chamosite

(Fe2+,Mg,Fe3+)5Al(Si3Al)O10(OH,O)8

monoklin : 2/m : C2/m

VIII/H.23-030

'Orthochamosite' (Pol.v. Chamosite)

(Fe2+,Mg,Fe3+)5Al(Si3Al)O10(OH,O)8

VIII/H.23-040

Baileychlore

(Zn,Fe2+,Al,Mg)6(Si,Al)4O10(OH)8

triklin : 1, 1 : C1, C1

VIII/H.23-050

Pennantite

Mn2+5Al(Si3Al)O10(OH)8

monoklin : 2/m : C2/m

VIII/H.23-060

Nimite

(Ni,Mg,Fe2+)5Al(Si3Al)O10(OH)8

monoklin : 2/m : C2/m

VIII/H.23-070

Gonyerite

Mn2+5Fe3+(Si3Fe3+O10)(OH)8

VIII/H.23-080

Cookeite

LiAl4(Si3Al)O10(OH)8

triklin : 1 : C1

VIII/H.23-090

Borocookeite

Li1-1.5Al4-3.5[(OH,F)8|(B,Al)Si3O10]

monoklin : 2/m : C2/m

VIII/H.23-095

Manandonite

Li2Al4[(Si2AlB)O10](OH)8

triklin : 1 : C1

VIII/H.23-100

Jadarite

LiNaB3SiO7(OH)

VIII/H.23-105

Franklinfurnaceite

Ca2(Fe3+,Al)Mn3+Mn32+Zn2Si2O10(OH)8

monoklin : 2 : C2

VIII/H.23-110

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Sudoite

Mg2Al3(Si3Al)O10(OH)8

monoklin : 2/m : C2/m

9.EJ.100

Cookeite

LiAl4(Si3Al)O10(OH)8

triklin : 1 : C1

9.EJ.150

Borocookeite

Li1-1.5Al4-3.5[(OH,F)8|(B,Al)Si3O10]

monoklin : 2/m : C2/m

9.EJ.160

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Cookeite

LiAl4(Si3Al)O10(OH)8

triklin : 1 : C1

71.04.01.02

'Chromian Clinochlore' (Var.v. Clinochlore)

Mg5(Al,Cr)2Si3O10(OH)8

71.04.01.04

Borocookeite

Li1-1.5Al4-3.5[(OH,F)8|(B,Al)Si3O10]

monoklin : 2/m : C2/m

71.04.01.10

Dozyite

Mg7(Al,Fe3+,Cr)2[(OH)12|Al2Si4O15]

monoklin : m : Cm

71.04.02.01

Lunijianlaite

Li0.7Al6.2(Si7AlO20)(OH,O)10

71.04.02.02

Corrensite

(Ca,Na,K)(Mg,Fe,Al)9(Si,Al)8O20(OH)10·nH2O

71.04.02.05

Aliettite

Ca0.2Mg6(Si,Al)8O20(OH)4·4H2O

71.04.02.08

Glagolevite

NaMg6[(OH,O)8|AlSi3O10]·H2O

triklin : 1 : C1

71.04.02.09

Franklinfurnaceite

Ca2(Fe3+,Al)Mn3+Mn32+Zn2Si2O10(OH)8

monoklin : 2 : C2

71.04.03.01

Related minerals "Hey's Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Spodumene

LiAlSi2O6

monoklin : 2/m : C2/c

16.01.02

Cookeite

LiAl4(Si3Al)O10(OH)8

triklin : 1 : C1

16.01.05

Other languages

German

Cookeit

Spanish

Cookeita

English

Cookeite

French

Cookeite-1A

Russian

Кукеит

Alternative Name

Cookeite (of Brush)

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