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Faujasite-Mg

Collectors Summary

Color farblos, weiß, blass braun
Streak color weiß
Crystal System kubisch, Fd3m

Chemism

Chemical formula

(Mg,Na,K,Ca)5(Si,Al)12O24·15H2O

Chemical composition

Aluminium, Calcium, Magnesium, Natrium, Silicium, Kalium, Sauerstoff, Wasserstoff

Unit weight: 1118.8228899 u; Number of atoms in the formula: 86

Info

Empirical formula:

(Mg0.55Na0.3K0.1Ca0.05)5(Si0.75Al0.25)12O24·15H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

2.70

30

34.88

1.0079470

30.2384100

Oxygen

O

55.77

39

45.35

15.9994300

623.9777700

Sodium

Na

3.08

1.5

1.74

22.9897702

34.4846553

Magnesium

Mg

5.97

2.75

3.20

24.3050600

66.8389150

Aluminium

Al

7.23

3

3.49

26.9815382

80.9446146

Silicon

Si

22.59

9

10.47

28.0855300

252.7697700

Potassium

K

1.75

0.5

0.58

39.0983100

19.5491550

Calcium

Ca

0.90

0.25

0.29

40.0784000

10.0196000

Strunz 9th edition incl. updates

9.GD.30

9: Silikate (Germanate)
G: Gerüstsilikate (Tektosilikate) mit zeolithischem H2O; Familie der Zeolithe
D: Ketten von fünfer-Ringen
30:Faujasit-Gruppe

Lapis Classification

VIII/J.27-044

VIII: SILIKATE
J: Gerüstsilikate (mit Zeolithen)
27: Zeolith-Gruppe; Würfelzeolithe

Classification by Hölzel

9.FL.103

9: SILICATES
F: Tektosilicates
L: Zeolites with 6-Rings

Dana 8th edition

77.01.02.07b

77: Tektosilicates Tectosilicate Zeolite group
01: Tektosilicates Tectosilicate Zeolite group true zeolites
02: Chabazite and related species

IMA status

anerkannt, Name beschreibt Mg-dominanten Faujasit (Zeolith Subkommittee (1997))

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Zeolite group  ⇒ FAU zeolite structure group  ⇒ Faujasite series

Optical Properties

Color

farblos, weiß, blass braun

Streak color

weiß

Diaphaneity (Transparency)

transparent bis durchscheinend

Crystallography

Crystal System

kubisch

Class (H-M)

m3m

Space Group number

227

Space Group

Fd3m

Cell parameters b (Å)

-

Cell parameters c (Å)

-

Cell parameters a/b or c/a

1

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

1

X-Ray Powder Diffraction

Crystals 3D

Open larger view

Physical Properties

Density (g/cm³)

1.923 - 1.94 / Durchschnittlich = 1.93

Preface

Name from

Barthelemy Faujas de Saint Fond (1741-1819), französischer Geologe

Author (Name, Year)

Coombs, u.w., 1997

References

Neues Jahrbuch für Mineralogie, Monatshefte (1975), 433.

Canadian Mineralogist 35 (1997), 1571.

IMA group assignments

Other languages

German

Faujasit-Mg

Spanish

Faujasita-Mg

English

Faujasite-Mg

French

Faujasite-Mg

Russian

Фоязит-Mg

CNMNC symbol

Symbol

Fau-Mg

Locations with GPS information

IDs

GUSID (Global unique identifier short form) nlYRo8wUbkikvt8HERN8Xw
GUID (Global unique identifier) A311569E-14CC-486E-A4BE-DF0711137C5F
Database ID 1101