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

Eifelite (Eifelit)

Pictures (15 Images total)

Eifelit
Views (File:
1254221223
): 1940
Eifelit
Bildbreite: 2 mm; Fundort: Stbr. Caspar, Ettringer Bellerberg, Ettringen, Eifel, Deutschland
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Deutschland/Rheinland-Pfalz/Mayen-Koblenz-Kreis/Mayen/Ettringen/Bellerberg/Ettringer Bellerberg (Stbr. Caspar)
Mineral: Eifelite
Image: 1254221223
Rating: 10 (votes: 2)
License: Usage for Mineralienatlas project only
Eifelit

Bildbreite: 2 mm; Fundort: Stbr. Caspar, Ettringer Bellerberg, Ettringen, Eifel, Deutschland
Copyright: Stephan Wolfsried
Contribution: Hg 2009-09-29
Locality: Ettringer Bellerberg (Stbr. Caspar) / Bellerberg / Ettringen / Mayen / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Eifelit
Views (File:
1232237286
): 1674, Rating: 8.5
Eifelit
Bildbreite: 2 mm; Fundort: Stbr. Caspar, Ettringer Bellerberg, Ettringen, Eifel, Deutschland
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Deutschland/Rheinland-Pfalz/Mayen-Koblenz-Kreis/Mayen/Ettringen/Bellerberg/Ettringer Bellerberg (Stbr. Caspar)
Mineral: Eifelite
Image: 1232237286
Rating: 8.5 (votes: 4)
License: Usage for Mineralienatlas project only
Eifelit

Bildbreite: 2 mm; Fundort: Stbr. Caspar, Ettringer Bellerberg, Ettringen, Eifel, Deutschland
Copyright: Stephan Wolfsried
Contribution: Hg 2009-01-18
Locality: Ettringer Bellerberg (Stbr. Caspar) / Bellerberg / Ettringen / Mayen / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Eifelit
Views (File:
1232237338
): 1956
Eifelit
Bildbreite: 3 mm; Fundort: Stbr. Caspar, Ettringer Bellerberg, Ettringen, Eifel, Deutschland
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Deutschland/Rheinland-Pfalz/Mayen-Koblenz-Kreis/Mayen/Ettringen/Bellerberg/Ettringer Bellerberg (Stbr. Caspar)
Mineral: Eifelite
Image: 1232237338
Rating: 9 (votes: 3)
License: Usage for Mineralienatlas project only
Eifelit

Bildbreite: 3 mm; Fundort: Stbr. Caspar, Ettringer Bellerberg, Ettringen, Eifel, Deutschland
Copyright: Stephan Wolfsried
Contribution: Hg 2009-01-18
Locality: Ettringer Bellerberg (Stbr. Caspar) / Bellerberg / Ettringen / Mayen / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Eifelit
Views (File:
1393789446
): 559
Eifelit
Tafelige farblose Kristalle, BB = 1 mm. Fundort: Stbr. Caspar, Ettringer Bellerberg, Ettringen, Eifel, Deutschland.
Copyright: Manfred Früchtl; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A013986, Donator: Melanie Albert
Location: Deutschland/Rheinland-Pfalz/Mayen-Koblenz-Kreis/Mayen/Ettringen/Bellerberg/Ettringer Bellerberg (Stbr. Caspar)
Mineral: Eifelite
Image: 1393789446
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Eifelit (SNr: A013986)

Tafelige farblose Kristalle, BB = 1 mm. Fundort: Stbr. Caspar, Ettringer Bellerberg, Ettringen, Eifel, Deutschland.
Collection: Lithothek der Münchener Micromounter
Copyright: Manfred Früchtl
Contribution: Münchener Micromounter 2014-03-02
Locality: Ettringer Bellerberg (Stbr. Caspar) / Bellerberg / Ettringen / Mayen / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Eifelit-Kristall
Views (File:
1155765871
): 2387, Rating: 8.25
Eifelit-Kristall
Bildbreite: 3 mm; Fundort: Stbr. Caspar, Bellerberg, Ettringen, Eifel, Deutschland
Copyright: Stephan Wolfsried; Contribution: slugslayer
Location: Deutschland/Rheinland-Pfalz/Mayen-Koblenz-Kreis/Mayen/Ettringen/Bellerberg/Ettringer Bellerberg (Stbr. Caspar)
Mineral: Eifelite
Image: 1155765871
Rating: 8.25 (votes: 12)
License: Usage for Mineralienatlas project only
Eifelit-Kristall

Bildbreite: 3 mm; Fundort: Stbr. Caspar, Bellerberg, Ettringen, Eifel, Deutschland
Copyright: Stephan Wolfsried
Contribution: slugslayer 2006-08-17
Locality: Ettringer Bellerberg (Stbr. Caspar) / Bellerberg / Ettringen / Mayen / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Eifelit
Views (File:
1264501487
): 1327
Eifelit
Fo.: Bellerberg, Rheinland-Pfalz, Eifel, Mayen, Deutschland, wasserklarer Kristall, BB 2,7mm
Copyright: Hannes Osterhammer; Contribution: Hannes Osterhammer
Collection: anatase2
Location: Deutschland/Rheinland-Pfalz/Mayen-Koblenz-Kreis/Mayen/Ettringen/Bellerberg/Ettringer Bellerberg (Stbr. Caspar)
Mineral: Eifelite
Image: 1264501487
Rating: 8 (votes: 3)
License: Usage for Mineralienatlas project only
Eifelit

Fo.: Bellerberg, Rheinland-Pfalz, Eifel, Mayen, Deutschland, wasserklarer Kristall, BB 2,7mm
Collection: anatase2
Copyright: Hannes Osterhammer
Contribution: Hannes Osterhammer 2010-01-26
Locality: Ettringer Bellerberg (Stbr. Caspar) / Bellerberg / Ettringen / Mayen / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland

You find additional Eifelit specimen at the Geolitho Museum

Collectors Summary

Color farblos, hellgrün, hellgrünlichgelb, hellgelb
Streak color weiß
Hardness (Mohs) 6.5
Solubility - HCl, H2SO4
Crystal System hexagonal, P6/mcc

Chemism

Chemical formula

KNa3Mg4Si12O30

Chemical composition

Magnesium, Natrium, Silicium, Kalium, Sauerstoff

Unit weight: 1022.2971206 u; Number of atoms in the formula: 50

Info

Empirical formula:

KNa3Mg4Si12O30

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

46.95

30

60.00

15.9994300

479.9829000
Sodium

Na

6.75

3

6.00

22.9897702

68.9693106
Magnesium

Mg

9.51

4

8.00

24.3050600

97.2202400
Silicon

Si

32.97

12

24.00

28.0855300

337.0263600
Potassium

K

3.82

1

2.00

39.0983100

39.0983100

Analysis wt%

SiO2 : 71.06, Al2O3 : 0.79, FeO : 0.48, MnO : 0.46, MgO : 16.24, K2O : 4.18, Na2O : 6.48 (Ref: Fortschritte der Mineralogie 80)

Strunz 9th edition incl. updates

9.CM.05

9: Silikate (Germanate)
C: Ringsilikate (Cyclosilikate)
M: ~[Si6O18]12- sechser-Doppelringe
05:Milarit-Gruppe

Lapis Classification

VIII/E.22-030

VIII: SILIKATE
E: Ringsilikate
22: Doppelte Sechserringe [Si12O30] 12-; Milarit/Osumilith-Gruppe

Classification by Hölzel

9.CF.420

9: SILICATES
C: Cyclosilicates
F: ~[Si12O30]12--Rings Milarite-Group

Dana 8th edition

63.02.01a.04

63: Cyclosilicates Cyclosilicate Condensed Rings
02: Cyclosilicates Cyclosilicate Condensed Rings 6-membered rings
01a: Milarite - Osumilite group (Milarite - Osumilite subgroup)

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Osumilite Group

Optical Properties

Color

farblos, hellgrün, hellgrünlichgelb, hellgelb

Streak color

weiß

Diaphaneity (Transparency)

transparent

max. Birefringence

0.001
Birefringence chart\! Eifelite title=Birefringence chart Eifelite

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

1.544

RI value γ / ε

1.545

Ri mean

1.544

2V angle

Uniaxial (+)

Crystallography

Crystal System

hexagonal

Class (H-M)

6/mmm

Space Group number

192

Space Group

P6/mcc

Cell parameters a (Å)

10.144

Cell parameters b (Å)

-

Cell parameters c (Å)

14.223

Cell parameters a/b or c/a

1.402

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

2

Volumne (ų)

1267.478

X-Ray Powder Diffraction

7.07(50),
4.43(60),
4.14(50),
3.75(90),
3.26(100),
2.91(50),
2.76(50),
1.864(50)
XRD chart Eifelite

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)

6.5

VHN (Hardness Vickers)

960 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.67

2.678 ( ρ calc. Mineralienatlas )

Instability

- HCl, H2SO4

(Co-)Type locality

(Co-)Type locality

Deutschland/Rheinland-Pfalz/Mayen-Koblenz-Kreis/Mayen/Ettringen/Bellerberg/Ettringer Bellerberg (Stbr. Caspar)

Type material

Mineralogische Sammlung, Ruhr-Universität Bochum

Paragenesis of type material

Quarz, Sanidin akzessorisch: Pyroxene, Amphibole, Tridymit, Hämatit, Pseudobrookit

Preface

Author (Name, Year)

Abraham & Gebert & Medenbach & Schreyer & Hentschel, 1980

References

Contributions to Mineralogy and Petrology 82 (1980), 252

IMA group assignments

Other languages

German

Eifelit

Spanish

Eifelita

French

Eifelite

English

Eifelite

Russian

Эйфелит

CNMNC (IMA)-Number

IMA 1980-097

CNMNC symbol

Symbol

Eif

Locations with GPS information