'._('einklappen').'
 

Motukoreaite

Pictures (10 Images total)

Motukoreait mit Phillipsit
Views (Image: 1219947562): 1676
Motukoreait mit Phillipsit

Fundort: Stradnerkogel, Bad Gleichenberg, Steiermark, Österreich; Bildbreite: 6 mm

Copyright: Leonardus
Contribution: slugslayer 2008-08-28
Locality: Stradnerkogel / Wilhelmsdorf / Merkendorf / Südoststeiermark, Bezirk / Steiermark / Österreich
Motukoreait
Views (Image: 1290457792): 1201
Motukoreait (SNr: A002 787)

Weiße bis hellbräunliche kugelige Krusten; (mitte in der oberen Bildhälfte). BB = 4,8 mm. Fundort: Browns Island (Motukorea),Auckland, North Island, Neuseeland.

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2010-11-22
Locality: Browns Island (Motukorea) / Auckland, Region / North Island / Neuseeland
Motukoreait
Views (Image: 1298239727): 1135
Motukoreait

Größe: 2,2 x 1,5 x 1 cm, Fundort: Browns Island (Motukorea), Auckland, North Island, Neuseeland

Copyright: Maggie Wilson
Contribution: thdun5 2011-02-20
Locality: Browns Island (Motukorea) / Auckland, Region / North Island / Neuseeland
Motukoreait xx auf Phillipsit xx
Views (Image: 1333473608): 791
Motukoreait xx auf Phillipsit xx

Stradnerkogel Wilhelmsdorf Bezirk Feldbach Steiermark Österreich. BB=15mm.

Collection: pilzpirat
Copyright: pilzpirat
Contribution: pilzpirat 2012-04-03
Locality: Stradnerkogel / Wilhelmsdorf / Merkendorf / Südoststeiermark, Bezirk / Steiermark / Österreich
Motukoreait xx
Views (Image: 1352044132): 673
Motukoreait xx

Stradnerkogel Wilhelmsdorf Feldbach Steiermark Österreich. BB=1,3mm.

Collection: pilzpirat
Copyright: pilzpirat
Contribution: pilzpirat 2012-11-04
Locality: Stradnerkogel / Wilhelmsdorf / Merkendorf / Südoststeiermark, Bezirk / Steiermark / Österreich
Motukoreait xx auf Phillipsit xx
Views (Image: 1345569055): 484
Motukoreait xx auf Phillipsit xx

Stradnerkogel Wilhelmsdorf Bezirk Feldbach Steiermark Österreich. BB=18mm.

Collection: pilzpirat
Copyright: pilzpirat
Contribution: pilzpirat 2012-08-21
Locality: Stradnerkogel / Wilhelmsdorf / Merkendorf / Südoststeiermark, Bezirk / Steiermark / Österreich

Collectors Summary

Color weiß, hell gelblichgrün
Streak color weiß
Lustre matt
Hardness (Mohs) 1.00 - 1.50
Cleavages gut {0001}
Solubility +++ Säuren
Crystal System trigonal, R3m

Chemism

Chem­ical formula

Mg6Al3(OH)18[Na(H2O)6](SO4)2·6H2O

Chem­ical com­po­si­tion

Aluminium, Magnesium, Natrium, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 964.2078588 u; Number of atoms in the formula: 92

Info

Empirical formula:

Mg6Al3(OH)18[Na(H2O)6](SO4)2·6H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

4.39

42

45.65

1.0079470

42.3337740

Oxygen

O

63.05

38

41.30

15.9994300

607.9783400

Sodium

Na

2.38

1

1.09

22.9897702

22.9897702

Magnesium

Mg

15.12

6

6.52

24.3050600

145.8303600

Aluminium

Al

8.39

3

3.26

26.9815382

80.9446146

Sulfur

S

6.65

2

2.17

32.0655000

64.1310000

Strunz 9th edi­tion incl. updates

7.DD.35

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
D: Sulfate (Selenate, etc.) mit weitere Anionen, mit H2O
D: mit mittelgroßen Kationen; Lagen von kantenverknüpften Oktaedern
35:Woodwardit-Gruppe

Lapis Clas­sifica­tion

VI/D.14-020

VI: SULFATE, CHROMATE, MOLYBDATE UND WOLFRAMATE
D: Wasserhaltige Sulfate, mit fremden Anionen
14: Mittelgroße und sehr große Kationen

Clas­sifica­tion by Hölzel

7.DD.100

7: SULFATES CHROMATES MOLYBDATES WOLFRAMATES
D: Sulfates (+Anions +Water)
D: Sulfate-Hydrotalcites

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Hydrotalcite Supergroup  ⇒ Wermlandit-Gruppe

Optical Properties

Color

weiß, hell gelblichgrün

Streak color

weiß

Diaphane­ity (Trans­parency)

durchscheinend

Lus­tre

matt

max. Birefrin­gence

0.012

Birefringence chart\! Motukoreaite title=Birefringence chart Motukoreaite

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

1.504

RI value γ / ε

1.516

Ri mean

1.508

2V angle

Uniaxial (+)

Anisotropism

nahezu isotropisch

Crystallography

Crystal Sys­tem

trigonal

Class (H-M)

3m

Space Group number

166

Space Group

R3m

Cell param­e­ters a (Å)

9.172

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

44.51

Cell param­e­ters a/b or c/a

4.853

Cell param­e­ters c/b

-

Z

3

Volumne (ų)

3242.771

X-Ray Pow­der Diffrac­tion

11.32(100),
5.58(80),
4.59(80),
3.72(80),
2.578(80),
2.386(80),
2.158(80),
1.921(80)

XRD chart Motukoreaite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

1.00 - 1.50

Density (g/cm³)

1.51 (gemessen)

1.481 ( ρ calc. Mineralienatlas )

Cleav­ages

gut {0001}

Tenac­ity

teilbar, flexibel

Insta­bil­ity

+++ Säuren

Chem­ical Prop­er­ties and Tests

stellenweise Dehydration möglich

Preface

Name from

Name nach Typlokalität

Author (Name, Year)

Rodgers & Chisholm & Davis & Nelson, 1977

References

Mineralogical Magazine 41 (1977), 389

IMA group assignments

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

Shigaite

NaMn62+Al3[(OH)18|(SO4)2]·12H2O

trigonal : 3 : R3

7.DD.35

Honessite

(Ni1-xFe3+x)(SO4)x/2(OH)2·nH2O {x<0.5}{n<3x/2}

7.DD.35

Carrboydite

(Ni,Al)9(SO4)2(OH)18·10H2O

7.DD.35

Wermlandite

(Ca,Mg)Mg7(Al,Fe3+)2(SO4)2(OH)18·12H2O

trigonal : 3m : P3c1

7.DD.35

Woodwardite

(Cu0.75Al0.25)(SO4)0.125(OH)2·0.3H2O

7.DD.35

Motukoreaite

Mg6Al3(OH)18[Na(H2O)6](SO4)2·6H2O

trigonal : 3m : R3m

7.DD.35

Nikischerite

NaFe62+Al3[(OH)18|(SO4)2]·12H2O

trigonal : 3 : R3

7.DD.35

Mountkeithite

(Mg,Ni)11(Fe3+,Cr,Al)3(OH)24(SO4,CO3)3.5·11H2O

7.DD.35

'Zincaluminite'

Zn6Al6(SO4)2(OH)26·5H2O

7.DD.35

Glaucocerinite

(Zn1-xAlx)(SO4)x/2(OH)2·nH2O {x<0.5}{n>3x/2}

7.DD.35

Hydrohonessite

(Ni1-x Fe3+x)(SO4)x/2(OH)2·nH2O {x < 0.5} {n > 3x/2}

7.DD.35

Hydrowoodwardite

(Cu1-xAlx)(SO4)x/2(OH)2·nH2O {x<0.5}{n>3x/2}

trigonal : 3m : R3m

7.DD.35

'Zincowoodwardite'

7.DD.35

'Natroglaucocerinite'

NaZn5Al3[(OH)16|(SO4)2]·6H2O

trigonal : 3 : P3

7.DD.35

Zincowoodwardit-1R

[Zn1-xAlx(OH)2][(SO4)x/2·nH2O] {x = 0.32-0.50}

7.DD.35

'Zincowoodwardite-3R'

[Zn1-xAlx(OH)2][(SO4)x/2·nH2O {x=0.32-0.50}

trigonal : 3 : R3

7.DD.35

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

Metavoltine

K2Na6Fe2+Fe63+(SO4)12O2·18 H2O

trigonal : 3 : P3

VI/D.14-010

Motukoreaite

Mg6Al3(OH)18[Na(H2O)6](SO4)2·6H2O

trigonal : 3m : R3m

VI/D.14-020

'Natroglaucocerinite'

NaZn5Al3[(OH)16|(SO4)2]·6H2O

trigonal : 3 : P3

VI/D.14-021

Nikischerite

NaFe62+Al3[(OH)18|(SO4)2]·12H2O

trigonal : 3 : R3

VI/D.14-022

Shigaite

NaMn62+Al3[(OH)18|(SO4)2]·12H2O

trigonal : 3 : R3

VI/D.14-023

Wermlandite

(Ca,Mg)Mg7(Al,Fe3+)2(SO4)2(OH)18·12H2O

trigonal : 3m : P3c1

VI/D.14-025

Lannonite

HCa4Mg2Al4(SO4)8F9·32H2O

VI/D.14-030

Slavíkite

(H3O)3Mg6Fe15(SO4)21(OH)18·98H2O

trigonal : 3 : R3

VI/D.14-040

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

Motukoreaite

Mg6Al3(OH)18[Na(H2O)6](SO4)2·6H2O

trigonal : 3m : R3m

7.DD.100

Wermlandite

(Ca,Mg)Mg7(Al,Fe3+)2(SO4)2(OH)18·12H2O

trigonal : 3m : P3c1

7.DD.130

IMA Number

IMA 1976-033

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

German pages

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

English pages

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

Russian pages

Webmineral.ru - search for: Мотукореаит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Motukoreait
Crystal-Treasure.com - search for: Motukoreait
Bosse - search for: Motukoreait

Locations with GPS information