Fiorite
Form of opal
(repeating unit)Fiorite is a hydrated silica mineraloid, a form of opal, found in cavities in volcanic tuff. It is a globular, botryoidal, or stalactic concretionary form of opal. The mineraloid has a pearly lustre and forms botryoidal masses. Named after Santa Fiora, Italy, fiorite is used as a gemstone.[1]
See also
- Geyserite
References
- ^ Manutchehr-Danai, Mohsen (2000). Dictionary of Gems and Gemology. Springer-Verlag. p. 182. ISBN 978-3540674825.
- Mindat with location data
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Silica minerals
Chalcedony |
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Opal |
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Quartz | |
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