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Friedrichbeckeite (Friedrichbeckeit)

Pictures (2 Images total)

Friedrichbeckeit
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Friedrichbeckeit
Bellerberg, Eifel. BB: 1,0 mm.
Copyright: Mabu; Contribution: Mabu
Collection: Mabu
Location: Deutschland/Rheinland-Pfalz/Mayen-Koblenz-Kreis/Mayen/Ettringen/Bellerberg/Ettringer Bellerberg (Stbr. Caspar)
Mineral: Friedrichbeckeite
Image: 1477685433
License: Usage for Mineralienatlas project only
Friedrichbeckeit

Bellerberg, Eifel. BB: 1,0 mm.
Collection: Mabu
Copyright: Mabu
Contribution: Mabu 2016-10-28
Locality: Ettringer Bellerberg (Stbr. Caspar) / Bellerberg / Ettringen / Mayen / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Dicktafelig blockiger Friedrichbeckeit von der Typlokalität
Views (File:
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Dicktafelig blockiger Friedrichbeckeit von der Typlokalität
Bellerberg in der Eifel, BB kleiner 1 mm (ex Eugen Rondorf)
Copyright: Hannes Osterhammer; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A036754, Donator: Wiili Schüller
Location: Deutschland/Rheinland-Pfalz/Mayen-Koblenz-Kreis/Mayen/Ettringen/Bellerberg/Ettringer Bellerberg (Stbr. Caspar)
Mineral: Friedrichbeckeite
Image: 1536590955
License: Usage for Mineralienatlas project only
Dicktafelig blockiger Friedrichbeckeit von der Typlokalität (SNr: A036754)  R
Analysed with RAMAN spectroscopy

Bellerberg in der Eifel, BB kleiner 1 mm (ex Eugen Rondorf)
Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2018-09-10
Locality: Ettringer Bellerberg (Stbr. Caspar) / Bellerberg / Ettringen / Mayen / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland

You find additional Friedrichbeckeit specimen at the Geolitho Museum

Collectors Summary

Hardness (Mohs) 6
Cleavages keine
Fracture unregelmäßig
Crystal System hexagonal, P6/mcc

Chemism

Chemical formula

K(☐Na)Mg2(Be2Mg)Si12O30

Chemical composition

Beryllium, Magnesium, Natrium, Silicium, Kalium, Sauerstoff, Vakanz

Unit weight: 970.03688481 u; Number of atoms in the formula: 50

Info

Empirical formula:

K(VcNa)Mg2(Be2Mg)Si12O30

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Vacancy

Vc

0.00

1

2.00

0.0000000

0.0000000
Beryllium

Be

1.86

2

4.00

9.0121823

18.0243646
Oxygen

O

49.48

30

60.00

15.9994300

479.9829000
Sodium

Na

2.37

1

2.00

22.9897702

22.9897702
Magnesium

Mg

7.52

3

6.00

24.3050600

72.9151800
Silicon

Si

34.74

12

24.00

28.0855300

337.0263600
Potassium

K

4.03

1

2.00

39.0983100

39.0983100

Analysis wt%

SiO2 : 74.33, BeO : 5.16, MgO : 12.47, Na2O : 3.20, K2O : 4.86 (Ref: berechnet)

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.22-020

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

Classification by Hölzel

9.CF.107

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

IMA status

anerkannt Aug. 2008

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Osumilite Group

Optical Properties

max. Birefringence

0.009
Birefringence chart\! Friedrichbeckeite title=Birefringence chart Friedrichbeckeite

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

1.552

RI value γ / ε

1.561

Ri mean

1.555

2V angle

Uniaxial (+)

Crystallography

Crystal System

hexagonal

Class (H-M)

6/mmm

Space Group number

192

Space Group

P6/mcc

Cell parameters a (Å)

9.970

Cell parameters b (Å)

-

Cell parameters c (Å)

14.130

Cell parameters a/b or c/a

1.417

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

2

Volumne (ų)

1216.363

X-Ray Powder Diffraction

4.993(30), 4.321(25), 4.081(30), 3.6898(30), 3.5381(25), 3.1799(100), 2.8847(70), 2.7374(25)
XRD chart Friedrichbeckeite

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

VHN (Hardness Vickers)

730 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.686 (berechnet)

2.648 ( ρ calc. Mineralienatlas )

Cleavages

keine

Fracture

unregelmäßig

Tenacity

spröde

(Co-)Type locality

(Co-)Type locality

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

Preface

Author (Name, Year)

Christian L. Lengauer, 2008

References

Neue Mineralien - IMA WEB Seite Aug. 2008

IMA group assignments

Other languages

German

Friedrichbeckeit

English

Friedrichbeckeite

Russian

Фридрихбеккеит

CNMNC (IMA)-Number

IMA 2008-019

CNMNC symbol

Symbol

Fri

Locations with GPS information