fiorite Min.
(fɪˈɔəraɪt)
[Named by Thomson 1796 from Santa Fior-a, its locality; see -ite.]
An incrustation formed from the decomposition of the siliceous minerals of volcanic rocks about fumaroles, or from the siliceous waters of hot springs.
| 1808 T. Allan Min. Nomen. 52 Müller's glass, or Lava glass..Fiorite. 1830 Lyell Princ. Geol. I. 214 A siliceous incrustation, first noticed by Dr. Thompson under the name of fiorite. 1884 Dana Min. 199 The original fiorite..occurs in tufa. |