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Caoxite

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Formula:
Ca(C
 
2
O
 
4
) · 3H
 
2
O
System:TriclinicLustre:Vitreous
Hardness:2 - 2½
Name:For the acronym of "Centennial Anniversary Of X-rays" and also for Calcium Oxalate.
This page provides mineralogical data about Caoxite.

Classification of Caoxite

IMA status:Approved
Strunz 8th edition ID:9/A.01-25
Nickel-Strunz 10th (pending) edition ID:10.AB.50

10 : ORGANIC COMPOUNDS
A : Salts of organic acids
B : Oxalates
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Type Occurrence of Caoxite

Type Locality:Cerchiara Mine, Borghetto Vara, Vara Valley, La Spezia Province, Liguria, Italy

Physical Properties of Caoxite

Lustre:Vitreous
Hardness (Mohs):2 - 2½

Crystallography of Caoxite

Crystal System:Triclinic

Optical Data of Caoxite

Type:Biaxial (-)
RI values: nα = 1.483 nβ = 1.516 nγ = 1.533
Maximum Birefringence:δ = 0.050

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Low
Dispersion:relatively strong

Chemical Properties of Caoxite

Formula:
Ca(C
 
2
O
 
4
) · 3H
 
2
O
Simplified for copy/paste:Ca(C2O4)·3H2O
Essential elements:C, Ca, H, O
All elements listed in formula:C, Ca, H, O

Relationship of Caoxite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
10.AB.05Humboldtine
Fe
2+
 
(C
 
2
O
 
4
) · 2H
 
2
O
10.AB.05Lindbergite
Mn
2+
 
(C
 
2
O
 
4
) · 2H
 
2
O
10.AB.10Glushinskite
Mg(C
 
2
O
 
4
) · 2H
 
2
O
10.AB.15Moolooite
Cu(C
 
2
O
 
4
) · 0.4H
 
2
O
10.AB.20Stepanovite
NaMgFe
3+
 
(C
 
2
O
 
4
)
 
3
· 8-9H
 
2
O
10.AB.25Minguzzite
K
 
3
Fe
3+
 
(C
 
2
O
 
4
)
 
3
· 3H
 
2
O
10.AB.30Wheatleyite
Na
 
2
Cu(C
 
2
O
 
4
)
 
2
· 2H
 
2
O
10.AB.35Zhemchuzhnikovite
NaMg(Fe
3+
 
,Al)(C
 
2
O
 
4
)
 
3
· 8H
 
2
O
10.AB.40Weddellite
Ca(C
 
2
O
 
4
) · 2H
 
2
O
10.AB.45Whewellite
Ca(C
 
2
O
 
4
) · H
 
2
O
10.AB.55Oxammite
(NH
 
4
)
 
2
(C
 
2
O
 
4
) · H
 
2
O
10.AB.60Natroxalate
Na
 
2
(C
 
2
O
 
4
)
10.AB.65Coskrenite-(Ce)
(Ce,Nd,La)
 
2
(C
 
2
O
 
4
)(SO
 
4
)
 
2
· 12H
 
2
O
10.AB.70Levinsonite-(Y)
(Y,Nd,La)Al(C
 
2
O
 
4
)(SO
 
4
)
 
2
· 12H
 
2
O
10.AB.75Zugshunstite-(Ce)
(Ce,Nd,La)Al(C
 
2
O
 
4
)(SO
 
4
)
 
2
· 12H
 
2
O
10.AB.80Novgorodovaite
Ca
 
2
(C
 
2
O
 
4
)Cl
 
2
· 2H
 
2
O

Other Names for Caoxite

Synonyms:
IMA1996-012
Other Languages:
German:Caoxit
Spanish:Caoxita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Caoxite

Reference List:

- +
Mineralogical Record: 29: 234.

Neues Jahrbuch für Mineralogie, Monatshefte (1997): 1997(2): 84-96.

Internet Links for Caoxite

Search Engines:
  • Look for Caoxite on Google
  • Look for Caoxite images on Google
  • External Links:
  • Look for Caoxite on Webmineral
  • Look for Caoxite on Athena Mineralogy
  • Look for Caoxite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Caoxite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
  • Wilensky Fine Minerals
  • Buy RARE Minerals from Rocks of Africa
  • Buy from Dave Bunk Minerals
  • Search for Caoxite on Well-Arranged Molecules
  • Find Caoxite on www.crystalclassics.co.uk
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Buy from McDougall Minerals
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  • Localities for Caoxite

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Italy
     
    • Liguria
      • La Spezia Province
        • Vara Valley
          • Borghetto Vara
    [MinRec 32:211]
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