https://www.mineralbox.biz
https://www.edelsteine-neuburg.de
https://www.mineral-bosse.de
https://www.mineraliengrosshandel.com
'._('einklappen').'
 

Cordierite (Cordierit)

Pictures (75 Images total)

Cordierit mit Mullit
Views (Image: 1263904185): 15145, Rating: 9.42
Cordierit mit Mullit

Größe: 1,2 mm; Fundort: Ettringer Bellerberg, Ettringen, Eifel, Deutschland

Copyright: Matteo Chinellato
Contribution: Hg 2010-01-19
Locality: Ettringer Bellerberg (Stbr. Caspar) / Bellerberg / Ettringen / Mayen / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Cordierit
Views (Image: 1185794110): 4336, Rating: 8.83
Cordierit

Fundort: Ettringer Bellerberg, Ettringen, Eifel, Deutschland; Bildbreite: 2,5 mm.

Collection: Willi Schüller, Adenau.
Copyright: Fred Kruijen
Contribution: Fred Kruijen 2007-07-30
Locality: Ettringer Bellerberg (Stbr. Caspar) / Bellerberg / Ettringen / Mayen / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Cordierit
Views (Image: 1291938415): 11849, Rating: 8.75
Cordierit

Größe: 0,87 mm, Fundort: Nickenicher Weinberg (Sattelberg), Nickenich, Eifel, Rheinland-Pfalz, Deutschland

Copyright: Matteo Chinellato
Contribution: Hg 2010-12-10
Locality: Nickenicher Weinberg (Sattelberg) / Nickenich / Pellenz, Verbandsgemeinde / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Cordierit
Views (Image: 1187754156): 12775
Cordierit

Bildbreite: 5 mm; Fundort: Nickenicher Sattel (Eicher Sattel), Eich, Andernach, Eifel, Rheinland-Pfalz, Deutschland

Copyright: Stephan Wolfsried
Contribution: Hg 2007-08-22
Locality: Nickenicher Sattel (Eicher Sattel) / Nickenich / Pellenz, Verbandsgemeinde / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Cordierit
Views (Image: 1227260580): 2891
Cordierit

Größe: 3,28 mm; Fundort: Stbr. Caspar, Ettringer Bellerberg, Ettringen, Eifel, Deutschland

Copyright: Matteo Chinellato
Contribution: Hg 2008-11-21
Locality: Ettringer Bellerberg (Stbr. Caspar) / Bellerberg / Ettringen / Mayen / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Cordierit
Views (Image: 1269517905): 1893
Cordierit

Größe: 1,09 mm; Fundort: Ettringer Bellerberg, Ettringen, Eifel, Deutschland

Copyright: Matteo Chinellato
Contribution: Hg 2010-03-25
Locality: Ettringer Bellerberg (Stbr. Caspar) / Bellerberg / Ettringen / Mayen / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland

Collectors Summary

Color frisch: bläulich, violett, bräunlich bis tiefblau, grau, bräunlich-grün, oder gelblich; zersetzt: matt graugrün, bräunlich-grau oder rot.
Streak color weiß
Lustre Fettglanz Glasglanz
Hardness (Mohs) 7 - 7.5
Solubility ++ HF, + konz. Säuren, - verdünnte Säuren, keine chem. Beh. fürgealterte X
Crystal System orthorhombisch, Cccm

Chemism

Chem­ical formula

Mg2Al4Si5O18

Chem­ical com­po­si­tion

Aluminium, Magnesium, Silicium, Sauerstoff

Unit weight: 584.9536628 u; Number of atoms in the formula: 29

Info

Empirical formula:

Mg2Al4Si5O18

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

49.23

18

62.07

15.9994300

287.9897400

Magnesium

Mg

8.31

2

6.90

24.3050600

48.6101200

Aluminium

Al

18.45

4

13.79

26.9815382

107.9261528

Silicon

Si

24.01

5

17.24

28.0855300

140.4276500

Anal­y­sis wt%

SiO2 : 48.65, Al2O3 : 32.58, Fe2O3 : 1.75, FeO : 4.79, MgO : 10.02, H2O : 2.49 (Ref: Aufschluss 70)

Strunz 9th edi­tion incl. updates

9.CJ.10

9: Silikate (Germanate)
C: Ringsilikate (Cyclosilikate)
J: ~[Si6O18]12- sechser-Einfachringe, ohne inselartig, komplexe [Anionen]
10:Cordierit-Gruppe

Lapis Clas­sifica­tion

VIII/E.12-040

VIII: SILIKATE
E: Ringsilikate
12: Sechserringe [Si6O18] 12-

Clas­sifica­tion by Hölzel

9.CC.300

9: SILICATES
C: Cyclosilicates
C: ~[Si6O18]12--Rings Beryl-Group

Hey's Chem­ical Index of Min­er­als

16.19.02

16: Silicates Containing Aluminum and other Metals
19: Aluminosilicates of Fe and Mg

Dana 8th edi­tion

61.02.01.01

61: Cyclosilicates Cyclosilicate Six-Membered Rings
02: Cyclosilicates Cyclosilicate Six-Membered Rings with Al substituted rings
01: Cordierite group

IMA sta­tus

beschrieben vor IMA Gründung 1959, vererbt, meist von der CNMNC anerkannt

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Beryl group

Optical Properties

Color

frisch: bläulich, violett, bräunlich bis tiefblau, grau, bräunlich-grün, oder gelblich; zersetzt: matt graugrün, bräunlich-grau oder rot.

Streak color

weiß

Lus­tre

Fettglanz Glasglanz

max. Birefrin­gence

0.007

Birefringence chart\! Cordierite title=Birefringence chart Cordierite

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

1.538

RI value β

1.543

RI value γ / ε

1.545

Ri mean

1.542

2V angle

Biaxial (-) 60°!!

Pleochro­ism

Starker Pleochroismus, d.h. je nach der Beobachtungsrichtung zeigen sich Farben zwischen violett und gelbgrau am gleichen Kristall

Optical Data Luminescence

Color SW-UV (254nm)

 

rot

Most Common Acti­vator

Fe3+

After­glow (Per­sistant Lumi­nes­cence)

keine Daten

Crystallography

Crystal Sys­tem

orthorhombisch

Class (H-M)

mmm

Space Group number

66

Space Group

Cccm

Cell param­e­ters a (Å)

17.062

Cell param­e­ters b (Å)

9.721

Cell param­e­ters c (Å)

9.339

Cell param­e­ters a/b or c/a

1.755

Cell param­e­ters c/b

0.961

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

1548.964

X-Ray Pow­der Diffrac­tion

8.54(80),
8.45(80),
4.09(70),
3.39(70),
3.37(60),
3.13(100),
3.046(60),
3.014(60)

XRD chart Cordierite

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)

7 - 7.5

VHN (Hard­ness Vick­ers)

1450 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.55 - 2.57

2.508 ( ρ calc. Mineralienatlas )

Insta­bil­ity

++ HF, + konz. Säuren, - verdünnte Säuren, keine chem. Beh. fürgealterte X

Preface

Occurrences

nahe der Erdoberfläche, in Gneisen und kontaktmetamorphen und regional-metamorphen Gesteinen

Name from

Cordierit wurde nach dem frz. Mineralogen P.L. Cordier (1777-1862) benannt.

Author (Name, Year)

Lucas, 1813

Rel­evance, Usage

Durchsichtige Kristalle werden selten als Edelstein verwendet.

Addi­tional Informa­tion

William H. Peck: Protolith carbon isotope ratios in cordierite from metamorphic and igneous rocks. American Mineralogist Vol. 101 (2016) S. 2279-2287.

References

American Mineralogist 62 (1977), 67.

American Mineralogist (1986) 71, 746-757.

American Mineralogist 84 (1999), 1181.

Physics and Chemistry of Minerals 20 (1994), 563.

Handbook of Mineralogy (Anthony u.w.), 2 (1995), 161.

European Journal of Mineralogy 12 (2000), 987.

American Mineralogist 86 (2001), 66.

Contributions to Mineralogy and Petrology 141 (2001), 381.

European Journal of Mineralogy 14 (2002), 459.

Contributions to Mineralogy and Petrology 145 (2003), 752.

Crystallography Reports 49 (2004), 953.

American Mineralogist 90 (2005), 1913.

American Mineralogist 91 (2006), 1184.

Periodico di Mineralogia 76 (2006), 113.

IMA group assignments

 
 
 
 

 
 
(Na,Cs)(Be2Li)Al2(Si6O18)
hexagonal
P6/mcc

 
 
Be3(Sc,Al)2Si6O18
hexagonal
P6/mcc

 
 
Be3Al2Si6O18
hexagonal
P6/mcc

 
 
Mg2Al4Si5O18
orthorhombisch
Cccm

 
 
(Fe2+,Mg)2Al4Si5O18
hexagonal
P6/mcc

 
 
Mg2Al4Si5O18
hexagonal
P6/mcc

 
 
Cs[Be2B]Mg2Si6O18
hexagonal
P6/mcc

 
 
Cs(Be2Li)Al2Si6O18
trigonal
R3c

 
 
(Fe2+,Mg)2Al4Si5O18
orthorhombisch
Cccm

 
 
Fe3+2Be3Si6O18·H2O
hexagonal
P6/mcc

Refresh list

Actuality: 10. May 2022 - 11:13:41

Varieties

Cerasite (of Kukuchi)

Cordierit im Trapiche-Habitus. Üblicherweise zu Muskovit/Serizit umgewandelt. Siehe auch Pinit

Iolite

Other languages

Dutch

Cordieriet

German

Cordierit

Spanish

Cordierita

English

Cordierite

French

Cordierite

Finnish

Kordieriitti

Basque

Kordierita

Polish

Kordieryt

Turkish

İyolit

Russian

Кордиерит

Ukrainian

Кордієрит

Hebrew

קורדיאריט

Persian

کوردیریت

Simplified Chinese

堇青石

Japanese

菫青石

Alternative Name

German

Cerasit

Spanish

Cerasita

Dichroit

Spanish

Dichroita

Dichroite

Hard Fahlunite

German

Iolit

Spanish

Iolita

German

Jolit

Spanish

Jolita

Jolite

German

Lazulith (of van Schlotheim)

Lazulith (of von Schlotheim)

Luchsapphir

Luchssaphir

Peliom

Spanish Lazulite

German

Steinheilit

Spanish

Steinheilita

Steinheilite

Tanolite

Water Sapphire

English

Water-sapphire

Simplified Chinese

董青石

Simplified Chinese

蓳青石

CNMNC symbol

Symbol

Crd

Rock part of

Refresh list | View legend

Hint

- Essential mineral - Important for the classification of the rock.
- Accessory or non-essential mineral - this minerals are common, sometimes major part of, but are not always present.

Actuality: 10. May 2022 - 11:13:41

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Cordierit
Google-Bilder-Suche - search for: Cordierit
Mineralienatlas.de (Forum) - search for: Cordierit

English pages

Mindat - search for: Cordierite
Webmineral - search for:Cordierite
Handbook-of-Mineralogy - search for: Cordierite
RRUFF - Raman, XRD and other mineral data - search for: Cordierite
RRUFF - References and PDF downloads - search for: Cordierite
American-Mineralogist-Crystal-Structure-Database - search for: Cordierite
Strahlen.org - search for: Cordierite

Russian pages

Webmineral.ru - search for: Кордиерит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Cordierit
Crystal-Treasure.com - search for: Cordierit
Bosse - search for: Cordierit
Edelsteine Neuburg - Gundolf Fischer - search for: Cordierit

Locations with GPS information