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Sillimullite (Sillimullit)

Collectors Summary

Color leicht rosa
Crystal System orthorhombisch, Pnam
Morphology Nadelförmig, ungefähr 0.2 mm x 0.02 mm x 0.02 mm

Additional information / Summary

Ein Zwischenglied zwischen Mullit und Sillimanit vom Bellerberg in der Eifel, Deutschland.

Chemism

Chemical formula

Al7.84Fe0.18Ti0.03Mg0.03Si3.92O19.96

Empirical formula (analysis)

Al7.84Fe0.18Ti0.03Mg0.03Si3.92O19.96

Additional chem. information

und Al8.28Fe3+0.20Si3.52O19.76

Chemical composition

Aluminium, Eisen, Magnesium, Silicium, Titan, Sauerstoff

Unit weight: 653.196460688 u; Number of atoms in the formula: 31.96

Info

Empirical formula:

Al7.84Fe0.18Ti0.03Mg0.03Si3.92O19.96

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

48.89

19.96

62.45

15.9994300

319.3486228

Magnesium

Mg

0.11

0.03

0.09

24.3050600

0.7291518

Aluminium

Al

32.38

7.84

24.53

26.9815382

211.5352595

Silicon

Si

16.85

3.92

12.27

28.0855300

110.0952776

Titanium

Ti

0.22

0.03

0.09

47.8671000

1.4360130

Iron

Fe

1.54

0.18

0.56

55.8452000

10.0521360

IMA status

noch kein anerkanntes Mineral (16. Feb. 2015)

Mineral status

Gemenge/Gemisch/Mischkristall

Optical Properties

Color

leicht rosa

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mmm

Space Group number

62

Space Group

Pnam

Cell parameters a (Å)

7.5127(4)

Cell parameters b (Å)

7.6823(4)

Cell parameters c (Å)

5.785(3)

Cell parameters a/b or c/a

0.978

Cell parameters c/b

0.753

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

1

Volumne (ų)

333.88

Morphology

Nadelförmig, ungefähr 0.2 mm x 0.02 mm x 0.02 mm

Physical Properties

Density (g/cm³)

3.248 ( ρ calc. Mineralienatlas )

References

Fischer, R.X., Tikhonova, V., Birkenstock, J., Fischer, L.A., Herrmann, K., Mengel, K., Schneider, H. - A new mineral from the Bellerberg, Eifel, Germany, intermediate between mullite and sillimanite. American Mineralogist, 100 (2015), 1493-1501

Other languages

German

Sillimullit

English

Sillimullite

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

German pages

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

English pages

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

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Sillimullit
Crystal-Treasure.com - search for: Sillimullit
Bosse - search for: Sillimullit

Locations with GPS information




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