Fiorite
From Infogalactic: the planetary knowledge core
| Fiorite | |
|---|---|
| General | |
| Category | Mineraloid |
| Formula (repeating unit) |
SiO2·nH2O |
| Identification | |
| Luster | pearly |
Fiorite is a hydrated silica rock, a form of opal, found in cavities in volcanic tuff. It is a globular, botryoidal or stalactic concretionary form of opal. It has a pearly lustre and forms botryoidal masses. It was named after Santa Fiora, in Italy. It is used as a gemstone.[1]
References
- ↑ Dictionary of Gems and Gemology By Mohsen Manutchehr-Danai, p.182
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