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Opal-C

A variety ofOpal
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EditAdd SynonymEdit CIF structuresClear Cache
C stands for cristobalite.
A variety ofOpal

A type of opal consisting of disorderedα-Cristobalite.



Unique IdentifiersJolyon RalphUnited Kingdom

Chemistry of Opal-C

Relationship of Opal-C to other Species
Other Members of Silica:
ChibaiteSiO2 · n(CH4, C2H6, C3H8, i-C4H10) (n = 3/17 (max))Iso.m3(2/m3) :Fd3
CoesiteSiO2Mon. 2/m :B2/b
CristobaliteSiO2Tet. 422 :P41212
KeatiteSiO2Tet. 422 :P43212
LechatelieriteSiO2Amor.
Melanophlogite46SiO2 · 6(N2,CO2) · 2(CH4,N2)Tet. 4/mmm(4/m2/m2/m)
MogániteSiO2Mon. 2/m
Opal-AGSiO2 · nH2O
Opal-ANSiO2 · nH2O
Opal-CTSiO2 · nH2O
QuartzSiO2Trig. 32 :P3121
Quartz-betaSiO2Hex. 622 :P6422
SeifertiteSiO2Orth.mmm(2/m2/m2/m) :Pbcn
StishoviteSiO2Tet. 4/mmm(4/m2/m2/m) :P42/mnm
TridymiteSiO2Tric. 1
β-CristobaliteSiO2Iso.m3m(4/m32/m) :Fd3m
β-TridymiteSiO2

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  • Blue Gems Australian & International

    • References for Opal-CⓘSalar del Hombre MuertoRaúl J. Tauber Larry´s collection
    Australia
     
    Thiry et al. (1991)
    Bulgaria
     
    Dimowa et al. (2022)
    Chile
     
    Vidal et al. (2022)
    Czech Republic
     
    Koníčková et al. (2021)
    Hungary
     
    Society of Economic Geologists Student Chapter University of Miskolc (2018)
    Italy
     
    Russo (2006)+1 other reference
    Madagascar
     
    Simoni et al. (2010)
    New Zealand
     
    Rod Martin CollectionMartin et al. (1999)
    Russia
     
    Kyle et al. (2007)
    Saudi Arabia
     
    Forti et al. (2004)
    Serbia
     
    Miladinović et al. (2024)
    USA
     
    Natkaniec-Nowak et al. (2020)White (1967)+2 other referencesWhite (1967)+2 other references
    Quick NavTopAbout Opal-CUnique IdentifiersPronunciationChemistryRelationshipsCommon AssociatesOther InformationOpal-C in petrologyInternet LinksReferencesLocalitiesLocality List
     
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