Century Dictionary and Cyclopedia
- n. A variety of silicious sinter found incrusting volcanic tufa. It is found in the vicinity of hot springs and volcanoes in globular, botryoidal, and stalactitic concretions with a pearly luster, and consists of silica (sometimes impure from the presence of alumina), iron peroxid, and water. Geyserite is a variety occurring about the orifices of geysers.
- n. mineralogy A variety of opal occurring in the cavities of volcanic tufa, in smooth and shining globular and botryoidal masses.
GNU Webster's 1913
- n. (Min.) A variety of opal occuring in the cavities of volcanic tufa, in smooth and shining globular and botryoidal masses, having a pearly luster; -- so called from Fiora, in Ischia.
- Fiora + -ite (Wiktionary)
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