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Chantalite (Chantalit)

Additional Functions

Collectors Summary

Color farblos, weiß
Streak color weiß
Crystal System tetragonal, I41/a

Chemism

Chemical formula

CaAl2SiO4(OH)4

Chemical composition

Aluminium, Calcium, Silicium, Sauerstoff, Wasserstoff

Unit weight: 254.1542344 u; Number of atoms in the formula: 16

Info

Empirical formula:

CaAl2SiO4(OH)4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

1.59

4

25.00

1.0079470

4.0317880

Oxygen

O

50.36

8

50.00

15.9994300

127.9954400

Aluminium

Al

21.23

2

12.50

26.9815382

53.9630764

Silicon

Si

11.05

1

6.25

28.0855300

28.0855300

Calcium

Ca

15.77

1

6.25

40.0784000

40.0784000

Strunz 9th edition incl. updates

9.AG.55

9: Silikate (Germanate)
A: Inselsilikate (Nesosilikate)
G: Insel(Neso)silikate mit zusätzlichem Anionen; Kationen in meist [6] und > [6] Koordination
55:Chantalit-Gruppe

Lapis Classification

VIII/B.23-020

VIII: SILIKATE
B: Inselsilikate mit tetraederfremden Anionen
23: Kationen mit Koordinationszahlen zwischen [8] und [12]

Classification by Hölzel

9.AI.430

9: SILICATES
A: Nesosilicates
I: Nesosilicates with OH
4: C small + large without REE's

Dana 8th edition

78.01.02.01

78: Unclassified Silicate Minerals
01: Unclassified silicates possible nesosilicates

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos, weiß

Streak color

weiß

max. Birefringence

0.011

Birefringence chart\! Chantalite title=Birefringence chart Chantalite

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

1.653

RI value γ / ε

1.642

Ri mean

1.649

2V angle

Uniaxial (-)

Crystallography

Crystal System

tetragonal

Class (H-M)

4/m

Space Group number

88

Space Group

I41/a

Cell parameters a (Å)

4.945

Cell parameters b (Å)

-

Cell parameters c (Å)

23.268

Cell parameters a/b or c/a

4.705

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

4

Volumne (ų)

568.973

X-Ray Powder Diffraction

5.810(20),
4.828(40),
4.171(70),
3.349(60),
2.598(100),
2.235(50),
2.202(30),
1.453(60)

XRD chart Chantalite

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)

2.85 (gemessen)

2.967 ( ρ calc. Mineralienatlas )

Preface

Author (Name, Year)

Sarp & Deferne & Liebich, 1977

References

Schweizerische Mineralogische und Petrographische Mitteilungen 57 (1977), 149

Other languages

German

Chantalit

Spanish

Chantalita

French

Chantalite

English

Chantalite

Russian

Чанталит

Russian

Шанталит

CNMNC (IMA)-Number

IMA 1977-001

CNMNC symbol

Symbol

Cht