Gro-roi'lite, n.
(49), n. [From Groroi, a town in France, and Gr. λίθος, stone.] (Min.) An earthy ore of manganese occurring in roundish masses of a blackish-brown color; wad. Dana.
(49), n. [From Groroi, a town in France, and Gr. λίθος, stone.] (Min.) An earthy ore of manganese occurring in roundish masses of a blackish-brown color; wad. Dana.