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Kornelite

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weißer, nadelig-büscheliger Kornelit
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weißer, nadelig-büscheliger Kornelit (SNr: A004949)

Deutschland/Baden-Württemberg/Freiburg, Bezirk/Ortenaukreis/Oberwolfach/Grube Clara, BB = 2,0 mm

Collection: Lithothek der Münchener Micromounter
Copyright: husi
Contribution: Münchener Micromounter 2019-07-21
Locality: Grube Clara / Oberwolfach / Ortenaukreis / Freiburg, Bezirk / Baden-Württemberg / Deutschland

Collectors Summary

Color blass rose rosa, violett
Streak color blass rot
Solubility +++ H2O
Crystal System monoklin, P21/n

Chemism

Chem­ical formula

Fe23+(SO4)3·7H2O

Chem­ical com­po­si­tion

Eisen, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 525.987328 u; Number of atoms in the formula: 38

Info

Empirical formula:

Fe2(SO4)3·7H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

2.68

14

36.84

1.0079470

14.1112580

Oxygen

O

57.79

19

50.00

15.9994300

303.9891700

Sulfur

S

18.29

3

7.89

32.0655000

96.1965000

Iron

Fe

21.23

2

5.26

55.8452000

111.6904000

Anal­y­sis wt%

Fe2O3 : 30.17, SO3 : 44.55, H2O : 24.92 (Ref: Dana, 7th ed. 2)

Strunz 9th edi­tion incl. updates

7.CB.60

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
C: Sulfate (Selenate, etc.) ohne weitere Anionen, mit H2O
B: Mit ausschließlich mittelgroßen Kationen
60:Kornelit-Gruppe

Lapis Clas­sifica­tion

VI/C.08-030

VI: SULFATE, CHROMATE, MOLYBDATE UND WOLFRAMATE
C: Wasserhaltige Sulfate, ohne fremde Anionen
8: Mittelgroße Kationen

Clas­sifica­tion by Hölzel

7.CC.200

7: SULFATES CHROMATES MOLYBDATES WOLFRAMATES
C: Sulfates (-Anions +Water)
C: Alunogen-Group

Dana 8th edi­tion

29.08.02.01

29: Hydrated Acid and Sulfates
08: Hydrated Acid and Sulfates where (A)2 (XO4)3 · x(H2O)

IMA sta­tus

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

blass rose rosa, violett

Streak color

blass rot

Diaphane­ity (Trans­parency)

transparent bis durchscheinend

max. Birefrin­gence

0.071

Birefringence chart\! Kornelite title=Birefringence chart Kornelite

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

1.567

RI value β

1.581

RI value γ / ε

1.638

Ri mean

1.595

2V angle

Biaxial (+) 56°!

Optical Data Luminescence

Lumi­nes­cence

keine Fluoreszenz bekannt

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/n

Cell param­e­ters a (Å)

14.30

Cell param­e­ters b (Å)

20.12

Cell param­e­ters c (Å)

5.425

Cell param­e­ters a/b or c/a

0.711

Cell param­e­ters c/b

0.270

Cell param­e­ters α

90°

Cell param­e­ters β

96.80

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

1549.879

X-Ray Pow­der Diffrac­tion

10.01(100),
7.04(80),
6.64(90),
4.67(90),
4.39(70),
4.30(80),
3.50(70),
3.14(80)

XRD chart Kornelite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

2.306

2.254 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ H2O

Preface

Author (Name, Year)

Krenner, 1888

References

Handbook of Mineralogy (Anthony et al.), 5 (2003), 368

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

Kornelite

Fe23+(SO4)3·7H2O

monoklin : 2/m : P21/n

7.CB.60

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

Rhomboclase

(H5O2)+Fe3+(SO4)2·2H2O

orthorhombisch : mmm : Pnma

VI/C.08-010

Lausenite

Fe23+(SO4)3·6H2O

monoklin : 2/m : P21/m

VI/C.08-020

Kornelite

Fe23+(SO4)3·7H2O

monoklin : 2/m : P21/n

VI/C.08-030

Aluminocoquimbite

Al2Fe2(SO4)6(H2O)12·6H2O

trigonal : 3m : P31c

VI/C.08-035

Coquimbite

AlFe3(SO4)6(H2O)12·6H2O

trigonal : 3m : P31c

VI/C.08-040

Paracoquimbite

Fe4(SO4)6(H2O)12·6H2O

trigonal : 3 : R3

VI/C.08-050

Quenstedtite

Fe23+(SO4)3·10 H2O

triklin : 1 : P1

VI/C.08-060

Alunogen

Al2(SO4)3·17H2O

triklin : 1 : P1

VI/C.08-070

'Meta-alunogen'

Al4(SO4)6·27H2O

VI/C.08-080

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

Kornelite

Fe23+(SO4)3·7H2O

monoklin : 2/m : P21/n

7.CC.200

Paracoquimbite

Fe4(SO4)6(H2O)12·6H2O

trigonal : 3 : R3

7.CC.210

Coquimbite

AlFe3(SO4)6(H2O)12·6H2O

trigonal : 3m : P31c

7.CC.211

Aluminocoquimbite

Al2Fe2(SO4)6(H2O)12·6H2O

trigonal : 3m : P31c

7.CC.213

Quenstedtite

Fe23+(SO4)3·10 H2O

triklin : 1 : P1

7.CC.220

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

Lausenite

Fe23+(SO4)3·6H2O

monoklin : 2/m : P21/m

29.08.01.01

Kornelite

Fe23+(SO4)3·7H2O

monoklin : 2/m : P21/n

29.08.02.01

Coquimbite

AlFe3(SO4)6(H2O)12·6H2O

trigonal : 3m : P31c

29.08.03.01

Paracoquimbite

Fe4(SO4)6(H2O)12·6H2O

trigonal : 3 : R3

29.08.04.01

Quenstedtite

Fe23+(SO4)3·10 H2O

triklin : 1 : P1

29.08.05.01

Alunogen

Al2(SO4)3·17H2O

triklin : 1 : P1

29.08.06.01

Other languages

German

Kornelit

Spanish

Kornelita

French

Kornelite

English

Kornelite

Russian

Корнелит

Traditional Chinese

斜紅鐵礬

Simplified Chinese

斜红铁矾

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

German pages

DeWikiPedia - search for: Kornelit
Google-Bilder-Suche - search for: Kornelit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Kornelit

English pages

Mindat - search for: Kornelite
Webmineral - search for:Kornelite
Handbook-of-Mineralogy - search for: Kornelite
RRUFF - Raman, XRD and other mineral data - search for: Kornelite
RRUFF - References and PDF downloads - search for: Kornelite
American-Mineralogist-Crystal-Structure-Database - search for: Kornelite
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Russian pages

Webmineral.ru - search for: Корнелит

Mineral Dealer

German pages

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Locations with GPS information