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Opal-CT from
Lussat, Puy-de-Dôme, Auvergne-Rhône-Alpes, France

Mineral Species
Species:Opal var: Opal-CT
Formula:SiO2 · nH2O
Quality for species:not specified / average specimens
Validity:Believed Valid
References:Mallard, E., 1890, Bull. Soc. Min., v13, p. 63
Associated Minerals Based on Photo Data:
Chalcedony1 photo of Opal-CT associated with Chalcedony at this locality.
Bitumen1 photo of Opal-CT associated with Bitumen at this locality.
Mineral Data:Click here to view Opal-CT data
Locality Data:Click here to view Lussat, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
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