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| Description | |
|---|---|
| Colour: | Blue |
| Quality of samples: | not specified / average specimens |
| Confirmation | |
| Validity: | Believed Valid |
| References | |
| References: | "Les minéraux, leurs gisements, leurs associations", P. Bariand, F. Cesbron et J. Geffroy (1977), Editions Minéraux et Fossiles, BRGM |
| Data | |
| Mineral Data: | Click here to view Opal data |
| Locality Data: | Click here to view Côte des Pompes, Saulzet-le-Chaud, Clermont-Ferrand, Puy-de-Dôme, Auvergne, France |