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Halloysite-10Å

Pictures (3 Images total)

Halloysit-10Å
Views (Image: 1362312192): 1559
Halloysit-10Å (SNr: A001021)

Kugelige gelbliche Kristalle, BB = 3,8 mm, Fundort: In den Dellen-Laacher See-Mendig-Eifel-Rheinland Pfalz.

Collection: Lithothek der Münchener Micromounter
Copyright: Bebo
Contribution: Münchener Micromounter 2013-03-03
Locality: In den Dellen (Grube Zieglowski) / Mendig, Verbandsgemeinde / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Halloysit-10A
Views (Image: 1298196209): 1546
Halloysit-10A

Halloysit-10A mit Kaolinit, Bildbreite: 4 cm, Fundort: Beez, Namur, Belgien

Copyright: Richard De Nul
Contribution: thdun5 2011-02-20
Locality: Beez / Namur / Namur, Provinz / Belgien
Halloysit-10Å
Views (Image: 1350294973): 1575
Halloysit-10Å (SNr: A017258)

Kugelige blaßgelbe Kristalle in Basaltblasen, BB = 4,5 mm. Fundort: In den Dellen-Laacher See-Mendig-Eifel-Rheinland Pfalz.

Collection: Lithothek der Münchener Micromounter
Copyright: Bebo
Contribution: Münchener Micromounter 2012-10-15
Locality: In den Dellen (Grube Zieglowski) / Mendig, Verbandsgemeinde / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland

Collectors Summary

Hardness (Mohs) 1 - 2
Solubility +++ Säuren
Crystal System monoklin, Cc

Additional information / Summary

Halloysit-10Å / Endellit

Chemism

Chem­ical formula

Al2Si2O5(OH)4·2H2O

Chem­ical com­po­si­tion

Aluminium, Silicium, Sauerstoff, Wasserstoff

Unit weight: 294.1914424 u; Number of atoms in the formula: 23

Info

Empirical formula:

Al2Si2O5(OH)4·2H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

2.74

8

34.78

1.0079470

8.0635760

Oxygen

O

59.82

11

47.83

15.9994300

175.9937300

Aluminium

Al

18.34

2

8.70

26.9815382

53.9630764

Silicon

Si

19.09

2

8.70

28.0855300

56.1710600

Anal­y­sis wt%

SiO2 : 44.46, Al2O3 : 36.58, K2O : 0.51, H2O : 17.63 (Ref: Rock Forming Minerals 1963)

Strunz 9th edi­tion incl. updates

9.ED.10

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

Clas­sifica­tion by Hölzel

9.EO.110

9: SILICATES
E: Phyllosilicates
O: Halloysite-Group

Hey's Chem­ical Index of Min­er­als

15.10

15: Silicates of Aluminum

Dana 8th edi­tion

71.01.01.04

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

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Kaolinite-Serpentine Group  ⇒ Kaolinite Subgroup

Optical Properties

RI value α / ω / n

1.54

Ri mean

1.540

2V angle

Biaxial

Optical Data Luminescence

Color LW-UV (365nm)

 

gelblich weiß

Color SW-UV (254nm)

 

grünlich weiß

LW-UV Other Col­ors

       

bläulich weiß, blassgelb, grünlich weiß, gelblich

SW-UV Other Col­ors

               

bläulich weiß, gelblich weiß, blassgelb, grünlich gelb, grün, grünlich, bräunlich grün, gelblich

Most Common Acti­vator

(UO2)2+ (Uranyl-Ion) als Verunreinigungen

After­glow (Per­sistant Lumi­nes­cence)

keine Daten

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

m

Space Group number

9

Space Group

Cc

Cell param­e­ters a (Å)

5.16

Cell param­e­ters b (Å)

8.94

Cell param­e­ters c (Å)

10.2

Cell param­e­ters a/b or c/a

0.577

Cell param­e­ters c/b

1.141

Cell param­e­ters α

90°

Cell param­e­ters β

100.20

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

463.094

X-Ray Pow­der Diffrac­tion

10.0(100),
4.36(70),
3.35(40),
2.54(30),
1.672(10),
1.480(30),
1.281(10)

XRD chart Halloysite-10Å

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

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

1 - 2

Density (g/cm³)

2.14 (gemessen)

2.11 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ Säuren

References

American Mineralogist 28 (1943), 1.

American Mineralogist 40 (1955), 1110.

Clays and Clay Minerals 26 (1978), 25.

Powder Diffraction 4 (1989), 19.

Gaines, Richard V., H. Catherine, W. Skinner, Eugene E. Foord, Brian Mason, Abraham Rosenzweig - Dana's New Mineralogy - The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana (1997), 1411.

Mineralogical Magazine 70 (2006), 257.

IMA group assignments



 
 
 
Al2Si2O5(OH)4
monoklin
Cc

 
 
 
Al2Si2O5(OH)4
 
 

 
 
 
Al2Si2O5(OH)4·2H2O
monoklin
Cc

 
 
 
Al2Si2O5(OH)4
monoklin
Cc

 
 
 
Al2Si2O5(OH)4
triklin
C1

 
 
 
Al2Si2O5(OH)4
monoklin
Cc

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Actuality: 20. Oct 2021 - 14:17:10

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

'Halloysite'

Al2Si2O5(OH)4

9.ED.10

Hisingerite

Fe23+Si2O5(OH)4·2H2O

9.ED.10

Halloysite-7Å

Al2Si2O5(OH)4

monoklin : m : Cc

9.ED.10

'Metahalloysite'

Al2Si2O5(OH)4

monoklin : m : Cc

9.ED.10

Halloysite-10Å

Al2Si2O5(OH)4·2H2O

monoklin : m : Cc

9.ED.10

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Halloysite-7Å

Al2Si2O5(OH)4

monoklin : m : Cc

9.EO.110

Halloysite-10Å

Al2Si2O5(OH)4·2H2O

monoklin : m : Cc

9.EO.110

Hisingerite

Fe23+Si2O5(OH)4·2H2O

9.EO.140

Neotocite

(Mn,Fe2+)SiO3·H2O

amorph

9.EO.160

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Halloysite-10Å

Al2Si2O5(OH)4·2H2O

monoklin : m : Cc

71.01.01.04

Antigorite

(Mg,Fe2+)3Si2O5(OH)4

monoklin : m : Cm

71.01.02a.01

Caryopilite

Mn2+3Si2O5(OH)4

monoklin : m : Cm

71.01.02b.01

Népouite

(Ni,Mg)3Si2O5(OH)4

orthorhombisch : mm2 : Ccm21

71.01.02b.03

Cronstedtite

Fe22+Fe3+(SiFe3+)O5(OH)4

trigonal : 3m : P31m

71.01.02c.07

'Parachrysotile' (Pol.v. Chrysotile)

Mg3Si2O5(OH)4

71.01.02d.03

Bismutoferrite

BiFe23+(SiO4)2(OH)

monoklin : m : Cm

71.01.03.01

Chapmanite

Fe3+2Sb3+(SiO4)2(OH)

monoklin : m : Cm

71.01.03.02

Allophane

Al2O3·(SiO2)1.3-2·(H2O)2.5-3

amorph

71.01.04.01

Hisingerite

Fe23+Si2O5(OH)4·2H2O

71.01.04.02

Imogolite

Al2SiO3(OH)4

71.01.04.03

Chrysotile

Mg3Si2O5(OH)4

71.01.05.01

Neotocite

(Mn,Fe2+)SiO3·H2O

amorph

71.01.05.04

Related minerals "Hey's Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Alternative Name

German

Endellit

Endellit = Halloysit-10Å

AIPEA recommendation, 1975.

The Canadian Mineralogist Vol. 44, pp. 1557-1560 (2006)

Thomas F. Bates, Fred A. Hildebrand, and Ada Swineford (1950) Morphology and structure of endellite and halloysite American Mineralogist. 35, 463-484.

Spanish

Endellita

English

Endellite

Halloysite-107

English

Hydratedhalloysite

CNMNC symbol

Symbol

Hly-10Å

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Halloysit-10Å
Google-Bilder-Suche - search for: Halloysit-10Å
Mineralogisch-Petrographisches-Institut Hamburg - search for: Halloysit-10Å

English pages

Mindat - search for: Halloysite-10Å
Webmineral - search for:Halloysite-10Å
Handbook-of-Mineralogy - search for: Halloysite-10Å
RRUFF - Raman, XRD and other mineral data - search for: Halloysite-10Å
RRUFF - References and PDF downloads - search for: Halloysite-10Å
American-Mineralogist-Crystal-Structure-Database - search for: Halloysite-10Å
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Mineral Dealer

German pages

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Crystal-Treasure.com - search for: Halloysit-10Å
Bosse - search for: Halloysit-10Å

Locations with GPS information