indicolite Min.
(ɪnˈdɪkəlaɪt)
[f. Gr. ἰνδικό-ν indigo + -lite: named by d'Andrada in 1800.]
An indigo-coloured variety of tourmaline.
| 1808 T. Allan List. Min. 38 Indicolite..from Uto in Sweden. 1816 Cleveland Min. 262 Indicolite..has an indigo blue color, sometimes so dark, that it appears almost black. 1843 Portlock Geol. 213 The Indicolite, of a fine blue colour, occurs in the granite of Donegal. |