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Weddellite (Weddellit)

Pictures (4 Images total)

Weddellit
Views (Image: 1319115148): 1353
Weddellit

Bildbreite: 8,5 mm; Fundort: Grube Cerchiara, Vara-Tal, Ligurien, Italien

Copyright: Enrico Bonacina
Contribution: Hg 2011-10-20
Locality: Cerchiara Mine / Vara-Tal / La Spezia, Provinz / Ligurien (Liguria), Region / Italien
Weddelit xx
Views (Image: 1144493381): 2236
Weddelit xx

Fundort: Buca della Vena Mine, Apuanische Alpen, Toskana, Italien; Bildbreite: 8 mm

Copyright: loismin
Contribution: loismin 2006-04-08
Locality: Buca della Vena / Stazzema / Massa-Carrara, Provinz / Toskana (Toscana) / Italien
blockiger gelber Weddellit
Views (Image: 1492935414): 403
blockiger gelber Weddellit (SNr: A038501)

von Biggs, Sherman Co., Oregon, USA; BB = 4,5 mm

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2017-04-23
Locality: Biggs / Sherman Co. / Oregon / USA
Weddellit
Views (Image: 1532100244): 282
Weddellit

an den Wurzeln von Pflanzen (Stoffwechelkrankheit). Sotzenhausen, Schelklingen, Alb-Donau-Kreis, Tübingen, Baden-Württemb.

Collection: Naturwiss. Bildungszentrum Ulm
Copyright: Doc Diether
Contribution: Doc Diether 2018-07-20
Locality: Sotzenhausen / Schelklingen / Alb-Donau-Kreis / Tübingen, Bezirk / Baden-Württemberg / Deutschland

Collectors Summary

Color farblos, bräunlich, weiß, gelblichbraun, braun
Streak color weiß
Hardness (Mohs) 4
Solubility +++ Säuren, - H2O
Crystal System tetragonal, I4/m

Chemism

Chemical formula

Ca(C2O4)·2H2O

Chemical composition

Calcium, Kohlenstoff, Sauerstoff, Wasserstoff

Unit weight: 164.128328 u; Number of atoms in the formula: 13

Info

Empirical formula:

Ca(C2O4)·2H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

2.46

4

30.77

1.0079470

4.0317880

Carbon

C

14.64

2

15.38

12.0107800

24.0215600

Oxygen

O

58.49

6

46.15

15.9994300

95.9965800

Calcium

Ca

24.42

1

7.69

40.0784000

40.0784000

Analysis wt%

CaO : 34.17, C2O3 : 43.87, H2O : 21.96

Strunz 9th edition incl. updates

10.AB.40

10: Organische Verbindungen
A: Salze organischer Säuren
B: Oxalate
40:

Lapis Classification

IX/A.01-020

IX: ORGANISCHE VERBINDUNGEN
A: Salze organischer Säuren
1: Oxalate [C2O4] 2-

Classification by Hölzel

A.AA.210

A: ORGANIC COMPLEXES
A: Carbonacids and their Salts
A: Oxalates

Dana 8th edition

50.01.02.01

50: Organic Minerals
01: Salts of Organic Acids (Oxalates)
02: Weddellite Group

Optical Properties

Color

farblos, bräunlich, weiß, gelblichbraun, braun

Streak color

weiß

Diaphaneity (Transparency)

transparent

max. Birefringence

0.021

Birefringence chart\! Weddellite title=Birefringence chart Weddellite

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

1.523

RI value γ / ε

1.544

Ri mean

1.530

2V angle

Uniaxial (+)

Crystallography

Crystal System

tetragonal

Class (H-M)

4/m

Space Group number

87

Space Group

I4/m

Cell parameters a (Å)

12.35

Cell parameters b (Å)

-

Cell parameters c (Å)

7.363

Cell parameters a/b or c/a

0.596

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

8

Volumne (ų)

1123.023

X-Ray Powder Diffraction

6.17(90),
4.40(60),
2.773(100),
2.235(70),
2.118(50),
1.956(60),
1.895(70),
1.835(60)

XRD chart Weddellite

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)

4

VHN (Hardness Vickers)

190 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.02

1.941 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren, - H2O

(Co-)Type locality

(Co-)Type locality

Antarktika/Westantarktis/Weddell-See

Preface

Author (Name, Year)

Frondel & Prien, 1942

References

Acta Crystallographica 18 (1965), 917.

Mineralogical Magazine 34 (1965), 256.

American Mineralogist 65 (1980), 327.

Handbook of Mineralogy (Anthony u.w.), 5 (2003), 750.

American Mineralogist 89 (2004), 245.

Mills, S.J.; Christy, Andrew G. - The Great Barrier Reef Expedition 1928–29: The crystal structure and occurrence of weddellite, ideally CaC2O4·2.5H2O, from the Low Isles, Queensland - Mineralogical Magazine [online: 17. Dezember 2015]

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

'Weddellite'

Ca(C2O4)·2H2O

tetragonal : 4/m : I4/m

10.AB.40

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

Natroxalate

Na2(C2O4)

monoklin : 2/m : P2/c

IX/A.01-005

Whewellite

Ca(C2O4)·H2O

monoklin : 2/m : P21/c

IX/A.01-010

'Weddellite'

Ca(C2O4)·2H2O

tetragonal : 4/m : I4/m

IX/A.01-020

Caoxite

Ca[C2O4]·3H2O

triklin : 1 : P1

IX/A.01-025

Novgorodovaite

Ca2[Cl2|C2O4]·2H2O

monoklin : 2/m : I2/m

IX/A.01-028

Oxammite

(NH4)2(C2O4)·H2O

orthorhombisch : 222 : P21212

IX/A.01-030

Glushinskite

Mg(C2O4)·2H2O

monoklin : 2/m : C2/c

IX/A.01-040

Humboldtine

Fe2+(C2O4)·2H2O

monoklin : 2/m : C2/c

IX/A.01-050

Lindbergite

Mn[C2O4]·2H2O

monoklin : 2/m : C2/c

IX/A.01-055

Minguzzite

K3Fe3+(C2O4)3·3H2O

monoklin : 2/m : P21/c

IX/A.01-060

Zhemchuzhnikovite

NaMg(Al,Fe3+)(C2O4)3·8H2O

IX/A.01-070

Stepanovite

NaMgFe3+(C2O4)3·8-9H2O

IX/A.01-080

Moolooite

Cu2+(C2O4)·0.5 H2O

orthorhombisch : mmm : Pnnm

IX/A.01-090

Wheatleyite

Na2Cu(C2O4)2·2H2O

triklin : 1 : P1

IX/A.01-100

Chanabayaite

Cu2(N3C2H2)2Cl(NH3,Cl,H2О,☐)4

orthorhombisch : mmm : Imma

IX/A.01-102

Antipinite

KNa3Cu2(C2O4)4

triklin : 1 : P1

IX/A.01-102

Deveroite-(Ce)

Ce2(C2O4)3·10H2O

monoklin : 2/m : P21/c

IX/A.01-105

Coskrenite-(Ce)

(Ce,Nd,La)2[(SO4)2|C2O4]·8H2O

triklin : 1, 1 : P1, P1

IX/A.01-110

Levinsonite-(Y)

YAl(SO4)2(C2O4)·12H2O

monoklin : 2/m : P2/n

IX/A.01-120

Zugshunstite-(Ce)

(Ce,Nd)Al[(SO4)2|C2O4]·12H2O

monoklin : 2/m : C2/c

IX/A.01-130

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

Whewellite

Ca(C2O4)·H2O

monoklin : 2/m : P21/c

A.AA.200

'Weddellite'

Ca(C2O4)·2H2O

tetragonal : 4/m : I4/m

A.AA.210

Caoxite

Ca[C2O4]·3H2O

triklin : 1 : P1

A.AA.220

Glushinskite

Mg(C2O4)·2H2O

monoklin : 2/m : C2/c

A.AA.240

Lindbergite

Mn[C2O4]·2H2O

monoklin : 2/m : C2/c

A.AA.250

Humboldtine

Fe2+(C2O4)·2H2O

monoklin : 2/m : C2/c

A.AA.260

Moolooite

Cu2+(C2O4)·0.5 H2O

orthorhombisch : mmm : Pnnm

A.AA.280

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

Whewellite

Ca(C2O4)·H2O

monoklin : 2/m : P21/c

50.01.01.01

'Weddellite'

Ca(C2O4)·2H2O

tetragonal : 4/m : I4/m

50.01.02.01

Caoxite

Ca[C2O4]·3H2O

triklin : 1 : P1

50.01.02.02

Humboldtine

Fe2+(C2O4)·2H2O

monoklin : 2/m : C2/c

50.01.03.01

Glushinskite

Mg(C2O4)·2H2O

monoklin : 2/m : C2/c

50.01.03.02

Lindbergite

Mn[C2O4]·2H2O

monoklin : 2/m : C2/c

50.01.03.03

Minguzzite

K3Fe3+(C2O4)3·3H2O

monoklin : 2/m : P21/c

50.01.04.01

Oxammite

(NH4)2(C2O4)·H2O

orthorhombisch : 222 : P21212

50.01.05.01

Moolooite

Cu2+(C2O4)·0.5 H2O

orthorhombisch : mmm : Pnnm

50.01.06.01

Stepanovite

NaMgFe3+(C2O4)3·8-9H2O

50.01.07.01

Zhemchuzhnikovite

NaMg(Al,Fe3+)(C2O4)3·8H2O

50.01.07.02

Wheatleyite

Na2Cu(C2O4)2·2H2O

triklin : 1 : P1

50.01.08.01

Zugshunstite-(Ce)

(Ce,Nd)Al[(SO4)2|C2O4]·12H2O

monoklin : 2/m : C2/c

50.01.09.01

Coskrenite-(Ce)

(Ce,Nd,La)2[(SO4)2|C2O4]·8H2O

triklin : 1, 1 : P1, P1

50.01.09.02

Levinsonite-(Y)

YAl(SO4)2(C2O4)·12H2O

monoklin : 2/m : P2/n

50.01.09.03

Other languages

German

Weddellit

Spanish

Weddellita

French

Weddellite

English

Weddellite

Russian

Уэдделит

Russian

Уэдделлит

Alternative Name

Hydrated Calcium Oxalate

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

German pages

DeWikiPedia - search for: Weddellit
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Mineralogisch-Petrographisches-Institut Hamburg - search for: Weddellit

English pages

Mindat - search for: Weddellite
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Russian pages

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Locations with GPS information




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