gigantolite Min.
(dʒaɪˈgæntəlaɪt)
[f. Gr. γιγαντ(ο)-, γίγᾱς giant + -lite. Named by Bonsdorf 1832.]
A pseudomorph after iolite occurring in large six or twelve sided crystals, a variety of pinite.
| 1835 Shepard Min. ii. II. 325 Gigantolite, a mineral composed of alumina, lime, and iron. |