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Imogolite (Imogolit)

Pictures (1 Images total)

Imogolit
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Imogolit
hellbeige Massen von Imogolit, Fukaiwa, Kanuma, Tochigi, Honshu, Japan; BB ~ 2 mm
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: Japan/Honshū (Honschu), Insel/Kanto, Region/Tochigi, Präfektur/Kanuma, Stadt/Fukaiwa
Mineral: Imogolite
Image: 1588010607
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Imogolit

hellbeige Massen von Imogolit, Fukaiwa, Kanuma, Tochigi, Honshu, Japan; BB 2 mm
Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-04-27
Locality: Fukaiwa / Kanuma, Stadt / Tochigi, Präfektur / Kanto, Region / Honshū (Honschu), Insel / Japan

Collectors Summary

Color gelblich weiß, hellbräunlichgelb, blau, grün, braun
Streak color weiß

Chemism

Chemical formula

Al2SiO3(OH)4

Chemical composition

Aluminium, Silicium, Sauerstoff, Wasserstoff

Unit weight: 198.0764044 u; Number of atoms in the formula: 14

Info

Empirical formula:

Al2SiO3(OH)4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

2.04

4

28.57

1.0079470

4.0317880
Oxygen

O

56.54

7

50.00

15.9994300

111.9960100
Aluminium

Al

27.24

2

14.29

26.9815382

53.9630764
Silicon

Si

14.18

1

7.14

28.0855300

28.0855300

Analysis wt%

Al2O3 : 51.48, SiO2 : 30.33, H2O : 18.19 (Ref: berechnet)

Strunz 9th edition incl. updates

9.ED.20

9: Silikate (Germanate)
E: Schichtsilikate (Phyllosilikate)
D: Schichtsilikate (Phyllosilikate) mit [Kaolinit]-Schichten, zusammengesetzt aus tetrahedralen oder octahedralen Netzen
20:Bismutoferrit-Gruppe

Lapis Classification

VIII/H.26-030

VIII: SILIKATE
H: Schichtsilikate
26: Glimmerartige Schicht-silikate mit Baugruppen [Si4O10] 4- und verwandte Strukturen;

Classification by Hölzel

9.EL.120

9: SILICATES
E: Phyllosilicates
L: Allophane-Group

Dana 8th edition

71.01.04.03

71: Phyllosilicate Minerals
01: Phyllosilicates Phyllosilicate Sheets of Six-Membered Rings with 1:1 layers
04: Allophane group

IMA status

Neudefinition von der CNMNC anerkannt

Mineral status

anerkanntes Mineral

Optical Properties

Color

gelblich weiß, hellbräunlichgelb, blau, grün, braun

Streak color

weiß

Diaphaneity (Transparency)

transparent

RI value α / ω / n

1.49

Ri mean

1.490

2V angle

Biaxial

Crystallography

Cell parameters b (Å)

5.1

Cell parameters c (Å)

8.4

Cell parameters α

nd

Cell parameters β

nd

Cell parameters γ

nd

X-Ray Powder Diffraction

16.0(100),
7.9(70),
5.6(30),
4.4(10),
4.1(10),
3.7(20),
3.3(60),
2.25(20)
XRD chart Imogolite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Physical Properties

Density (g/cm³)

2.7

(Co-)Type locality

(Co-)Type locality

Japan/Kyūshū (Kyushu), Insel/Kumamoto, Präfektur/Uemura

Preface

Author (Name, Year)

Yoshinaga & Aomine, 1962

References

Mineralogical Magazine 51 (1987), 327

Other languages

Spanish

Imogolita

French

Imogolite

English

Imogolite

German

Imogolith

Russian

Имоголит

Alternative Name

German

Imogolit

Japanese

芋子石

CNMNC symbol

Symbol

Imo

IDs

GUSID (Global unique identifier short form) 2dEh7deS70eZuY66xWanPA
GUID (Global unique identifier) ED21D1D9-92D7-47EF-99B9-8EBAC566A73C
Database ID 1714