hyalite Min.
(ˈhaɪəlaɪt)
[f. Gr. ὕαλ-ος glass + -ite (F. hyalite): named by Werner 1794.]
A colourless variety of opal, occurring in globular concretions.
| 1794 Kirwan Elem. Min. (ed. 2) I. 297 Hyalite, Müller's Glass, of the Germans. 1852 Th. Ross Humboldt's Trav. I. i. 36 Known by the names of volcanic glass, glass of Muller, or hyalite. 1868 Dana Min. (ed. 5) 201 Hyalite occurs in amygdaloid. |