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Montmorillonite

Pictures (73 Images total)

Montmorillonit
Views (Image: 1397321413): 4995
Montmorillonit (SNr: A017652)

Microkristalline farblos-trübe Kristalle überziehen andere Mineralien, BB = 2,6 mm, Fundort: Limberg, Sasbach I, Kaiserstuhl, Baden-Württemberg, Deutschland.

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2014-04-12
Locality: Limberg / Sasbach am Kaiserstuhl / Emmendingen, Landkreis / Freiburg, Bezirk / Baden-Württemberg / Deutschland
Montmorillonit
Views (Image: 1607701529): 474
Montmorillonit

BB: 3,5 mm; Montmorillonit, Arensberg, Zilsdorf Eifel

Collection: Harald Biecker
Copyright: Harald Biecker
Contribution: Harald Biecker 2020-12-11
Locality: Arensberg / Zilsdorf / Hillesheim / Vulkaneifel, Landkreis / Rheinland-Pfalz / Deutschland
Montmorillonit
Views (Image: 1206725560): 14657, Rating: 9.17
Montmorillonit

Steinbrüche am Limberg, Sasbach, Kaiserstuhl, Baden-Württemberg, Deutschland
(Bildbreite ca. 5,2 mm)

Collection: MichaelP
Copyright: MichaelP
Contribution: MichaelP 2008-03-28
Locality: Limberg / Sasbach am Kaiserstuhl / Emmendingen, Landkreis / Freiburg, Bezirk / Baden-Württemberg / Deutschland
Montmorillonit
Views (Image: 1397321278): 6746, Rating: 9.13
Montmorillonit (SNr: A017651)

Microkristalline farblos-trübe Kristalle überziehen andere Mineralien, BB = 4 mm, Fundort: Limberg, Sasbach I, Kaiserstuhl, Baden-Württemberg, Deutschland.

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2014-04-12
Locality: Limberg / Sasbach am Kaiserstuhl / Emmendingen, Landkreis / Freiburg, Bezirk / Baden-Württemberg / Deutschland
Montmorillonit
Views (Image: 1514047677): 3575, Rating: 9.25
Montmorillonit (SNr: 3908)

Steinbruch Rodenberg, Bergheim, Wetteraukreis, Bildbreite 5 mm

Collection: Reinhold
Copyright: Reinhold
Contribution: Reinhold 2017-12-23
Locality: Bergheim / Ortenberg / Wetteraukreis / Darmstadt, Bezirk / Hessen / Deutschland
korallenartiger blaugrau bis weißer Montomorillonit
Views (Image: 1507297244): 203
korallenartiger blaugrau bis weißer Montomorillonit (SNr: A003937)

vom Exit s56, Interstate 17, Yavapai Co., Arizona, BBB = 2,0 mm

Collection: Lithothek der Münchener Micromounter
Copyright: Bebo
Contribution: Münchener Micromounter 2017-10-06
Locality: Interstate 17, Exit 256 / Badger Springs / Yavapai Co. / Arizona / USA

Collectors Summary

Color weiß, grauweiß, gelb, bräunlichgelb, grünlichgelb
Streak color weiß
Lustre Fettglanz
Hardness (Mohs) 1.5
Solubility ++ Säuren
Crystal System monoklin, C2/m

Chemism

Chem­ical formula

(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O

Chem­ical com­po­si­tion

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

Unit weight: 385.169913595 u; Number of atoms in the formula: 23.3

Info

Empirical formula:

(Na0.75Ca0.25)0.3(Al0.75Mg0.25)2Si4O10(OH)2·nH2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

1.05

4

17.17

1.0079470

4.0317880

Oxygen

O

54.00

13

55.79

15.9994300

207.9925900

Sodium

Na

1.34

0.23

0.97

22.9897702

5.1726983

Magnesium

Mg

3.16

0.5

2.15

24.3050600

12.1525300

Aluminium

Al

10.51

1.5

6.44

26.9815382

40.4723073

Silicon

Si

29.17

4

17.17

28.0855300

112.3421200

Calcium

Ca

0.78

0.08

0.32

40.0784000

3.0058800

Anal­y­sis wt%

SiO2 : 51.14, Al2O3 : 19.76, Fe2O3 : 0.83, MgO : 3.22, CaO : 1.62, H2O : 22.80 (Ref: USGS Prof.Pap.45)

Strunz 9th edi­tion incl. updates

9.EC.40

9: Silikate (Germanate)
E: Schichtsilikate (Phyllosilikate)
C: Schichtsilikate (Phyllosilikate) mit Glimmer Tafeln, zusammengesetzt aus tetrahedralen oder octahedralen Netzen
40:Montmorillonit-Gruppe

Lapis Clas­sifica­tion

VIII/H.19-020

VIII: SILIKATE
H: Schichtsilikate
19: Tonminerale, regulär geschichtet; Glimmerartige Schicht-silikate mit Baugruppen [Si4O10] 4- und verwandte Strukturen; Montmorillonit-Gruppe

Clas­sifica­tion by Hölzel

9.EI.100

9: SILICATES
E: Phyllosilicates
I: Montmorillonite-Saponite-Group

Dana 8th edi­tion

71.03.01a.02

71: Phyllosilicate Minerals
03: Phyllosilicates Phyllosilicate Sheets of Six-Membered Rings with 2:1 clays
01a: Smectite group (Dioctahedral Smectites)

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

weiß, grauweiß, gelb, bräunlichgelb, grünlichgelb

Streak color

weiß

Diaphane­ity (Trans­parency)

durchscheinend bis opak

Lus­tre

Fettglanz

max. Birefrin­gence

0.025

Birefringence chart\! Montmorillonite title=Birefringence chart Montmorillonite

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

1.48 - 1.57

RI value β

1.50 - 1.59

RI value γ / ε

1.50 - 1.60

Ri mean

1.54

2V angle

Biaxial (-) sm

Ori­enta­tion

X ~ c, Y = b, Z ~ a

Pleochro­ism

farblos, blassbraun, gelblichgrün, dunkelbraun

Optical Data Luminescence

Color LW-UV (365nm)

 

gelblich weiß

Color SW-UV (254nm)

 

gelblich weiß

LW-UV Other Col­ors

 

dunkelorange gelbbraun

After­glow (Per­sistant Lumi­nes­cence)

keine Daten

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell param­e­ters a (Å)

5.19

Cell param­e­ters b (Å)

9.02

Cell param­e­ters c (Å)

12.4

Cell param­e­ters a/b or c/a

0.575

Cell param­e­ters c/b

1.375

Cell param­e­ters α

90°

Cell param­e­ters β

94°

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

579.077

X-Ray Pow­der Diffrac­tion

13.6(100),
4.47(20),
3.34(10),
3.23(10),
2.92(10),
2.54(10)

XRD chart Montmorillonite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

1.5

VHN (Hard­ness Vick­ers)

18 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.5 (gemessen) 2.38 (berechnet)

2.209 ( ρ calc. Mineralienatlas )

Insta­bil­ity

++ Säuren

Chem­ical Prop­er­ties and Tests

Quillt bei zugabe von Wasser auf ein vielfaches seines Volumens.

Preface

Author (Name, Year)

Mauduyt, 1847

Addi­tional Informa­tion

Von Mauduyt 1847 beschrieben; benannt nach der Fundstätte Montmorillon in Süd-Frankreich.

References

Handbook of Mineralogy (Anthony et al.), 2 (1995), 551

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

Saponite

(Ca,Na)0.3(Mg,Fe2+)3(Si,Al)4O10(OH)2·4H2O

9.EC.40

'Hectorite'

Na0.3(Mg,Li)3Si4O10(F,OH)2

9.EC.40

Beidellite

(Na,Ca0.5)0.3Al2(Si,Al)4O10(OH)2·4H2O

9.EC.40

Nontronite

Na0.3Fe23+(Si,Al)4O10(OH)2·4H2O

9.EC.40

Kurumsakite

(Zn,Ni,Cu)8Al8V2Si5O35·27H2O

9.EC.40

Swinefordite

(Ca,Na)0.3(Al,Li,Mg)2(Si,Al)4O10(OH,F)2·2H2O

9.EC.40

Volkonskoite

Ca0.3(Cr3+,Mg,Fe3+)2(Si,Al)4O10(OH)2·4H2O

9.EC.40

Yakhontovite

(Ca,Na,K)0.3(CuFe2+Mg)2Si4O10(OH)2·3H2O

9.EC.40

Montmorillonite

(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O

monoklin : 2/m : C2/m

9.EC.40

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

Brinrobertsite

(Na,K,Ca)0.3(Al,Fe,Mg)4(Si,Al)8O20(OH)4·3.5H2O

VIII/H.19-010

Montmorillonite

(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O

monoklin : 2/m : C2/m

VIII/H.19-020

Beidellite

(Na,Ca0.5)0.3Al2(Si,Al)4O10(OH)2·4H2O

VIII/H.19-030

Nontronite

Na0.3Fe23+(Si,Al)4O10(OH)2·4H2O

VIII/H.19-040

Volkonskoite

Ca0.3(Cr3+,Mg,Fe3+)2(Si,Al)4O10(OH)2·4H2O

VIII/H.19-050

Swinefordite

(Ca,Na)0.3(Al,Li,Mg)2(Si,Al)4O10(OH,F)2·2H2O

VIII/H.19-060

Yakhontovite

(Ca,Na,K)0.3(CuFe2+Mg)2Si4O10(OH)2·3H2O

VIII/H.19-070

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

Montmorillonite

(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O

monoklin : 2/m : C2/m

9.EI.100

'Hectorite'

Na0.3(Mg,Li)3Si4O10(F,OH)2

9.EI.120

Swinefordite

(Ca,Na)0.3(Al,Li,Mg)2(Si,Al)4O10(OH,F)2·2H2O

9.EI.130

Wonesite

(Na,K,☐)(Mg,Fe,Al)6(Si,Al)8O20(OH,F)4

triklin : 1 : C1

9.EI.160

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

Montmorillonite

(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O

monoklin : 2/m : C2/m

71.03.01a.02

Volkonskoite

Ca0.3(Cr3+,Mg,Fe3+)2(Si,Al)4O10(OH)2·4H2O

71.03.01a.04

Ferrosaponite

Ca0.3(Fe2+,Mg,Fe3+)3[(OH)2|(Si,Al)Si3O10]·4H2O

71.03.01b.02a

Hedenbergite

CaFe2+Si2O6

monoklin : 2/m : C2/c

71.03.01b.04

Yakhontovite

(Ca,Na,K)0.3(CuFe2+Mg)2Si4O10(OH)2·3H2O

71.03.01b.07

Zincsilite

Zn3Si4O10(OH)2·4H2O

71.03.01b.08

Other languages

Dutch

Montmorilloniet

German

Montmorillonit

Spanish

Montmorillonita

English

Montmorillonite

French

Montmorillonite

Russian

Монтмориллонит

Ukrainian

Монтморилоніт

Hebrew

בנטוניט

Hebrew

מונטמורילוניט

Persian

بنتونیت

Japanese

モンモリロン石

Traditional Chinese

蒙脫石

Simplified Chinese

蒙脱石

Alternative Name

Acanite

Clark 3 (1993)

Amagorsite

German

Amargosit

Spanish

Amargosita

Amargosite

Daunialite

German

Fullererde

German

Giliabit

Goumbrine

Gumbrine

Esperanto

Montmorijonito

German

Stolpenit

Italian

Stolpenita

Stolpenite

Taylorite (of Knight)

Walkerite (of Dana)

Walkthon

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

German pages

DeWikiPedia - search for: Montmorillonit
Google-Bilder-Suche - search for: Montmorillonit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Montmorillonit

English pages

Mindat - search for: Montmorillonite
Webmineral - search for:Montmorillonite
Handbook-of-Mineralogy - search for: Montmorillonite
RRUFF - Raman, XRD and other mineral data - search for: Montmorillonite
RRUFF - References and PDF downloads - search for: Montmorillonite
American-Mineralogist-Crystal-Structure-Database - search for: Montmorillonite
Athena - search for: Montmorillonite

Russian pages

Webmineral.ru - search for: Монтмориллонит

Mineral Dealer

German pages

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Crystal-Treasure.com - search for: Montmorillonit
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Locations with GPS information