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Caoxite

Pictures (1 Images total)

Caoxit xx mit Sugilit x
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Caoxit xx mit Sugilit x
Weiße Caoxit xx mit typisch schräger Endfläche zusammen mit einem rötlichen Sugilit x; Miniera Cerchiara, Ligurien, Italien; Bildbreite 6 mm
Copyright: loismin; Contribution: loismin
Collection: loismin
Location: Italien/Ligurien (Liguria), Region/La Spezia, Provinz/Vara-Tal/Cerchiara Mine
Mineral: Caoxite, Sugilite
Image: 1384713227
License: Usage for Mineralienatlas project only
Caoxit xx mit Sugilit x

Weiße Caoxit xx mit typisch schräger Endfläche zusammen mit einem rötlichen Sugilit x; Miniera Cerchiara, Ligurien, Italien; Bildbreite 6 mm

Collection: loismin
Copyright: loismin
Contribution: loismin 2013-11-17
Locality: Cerchiara Mine / Vara-Tal / La Spezia, Provinz / Ligurien (Liguria), Region / Italien

Collectors Summary

Color farblos
Streak color weiß
Cleavages gut {010}
Fracture uneben
Solubility +++ Säuren, - H2O
Crystal System triklin, P1

Chemism

Chemical formula

Ca[C2O4]·3H2O

Chemical composition

Calcium, Kohlenstoff, Sauerstoff, Wasserstoff

Unit weight: 182.143652 u; Number of atoms in the formula: 16

Info

Empirical formula:

Ca[C2O4]·3H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

3.32

6

37.50

1.0079470

6.0476820

Carbon

C

13.19

2

12.50

12.0107800

24.0215600

Oxygen

O

61.49

7

43.75

15.9994300

111.9960100

Calcium

Ca

22.00

1

6.25

40.0784000

40.0784000

Analysis wt%

CaO : 30.79, C2O3 : 39.54, H2O : 29.67 (Ref: berechnet)

Strunz 9th edition incl. updates

10.AB.50

10: Organische Verbindungen
A: Salze organischer Säuren
B: Oxalate
50:Caoxit-Gruppe

Lapis Classification

IX/A.01-025

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

Classification by Hölzel

A.AA.220

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

Dana 8th edition

50.01.02.02

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

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos

Streak color

weiß

Diaphaneity (Transparency)

transparent

max. Birefringence

0.050

Birefringence chart\! Caoxite title=Birefringence chart Caoxite

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

1.483

RI value β

1.516

RI value γ / ε

1.533

Ri mean

1.511

2V angle

Biaxial (-) 70°

Crystallography

Crystal System

triklin

Class (H-M)

1

Space Group number

2

Space Group

P1

Cell parameters a (Å)

6.097

Cell parameters b (Å)

7.145

Cell parameters c (Å)

8.434

Cell parameters a/b or c/a

0.853

Cell parameters c/b

1.180

Cell parameters α

76.53

Cell parameters β

70.30

Cell parameters γ

70.75

Z

2

Volume (ų)

323.486

X-Ray Powder Diffraction

7.92(50),
5.52(100),
5.26(50),
4.99(50),
3.643(50),
2.834(80),
2.758(50),
2.732(50)

XRD chart Caoxite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

1.85

1.87 ( ρ calc. Mineralienatlas )

Cleavages

gut {010}

Fracture

uneben

Tenacity

spröde

Instability

+++ Säuren, - H2O

Preface

Author (Name, Year)

Basso & Lucchetti & Zefiro & Palenzona, 1997

References

Neues Jahrbuch für Mineralogie, Monatshefte (1997), 84

Other languages

German

Caoxit

Spanish

Caoxita

English

Caoxite

French

Caoxite

CNMNC (IMA)-Number

IMA 1996-012

CNMNC symbol

Symbol

Cao

Locations with GPS information

IDs

GUSID (Global unique identifier short form) 0gxwzKMY4EavaR06IR-1tg
GUID (Global unique identifier) CC700CD2-18A3-46E0-AF69-1D3A211FB5B6
Database ID 600