'Leucopyrite' definitions:

Definition of 'Leucopyrite'

From: GCIDE

Leucopyrite \Leu*cop"y*rite\ (l[-u]*k[o^]p"[i^]*r[imac]t), n. [Leuco- + pyrites.] (Min.) A mineral of a color between white and steel-gray, with a metallic luster, and consisting chiefly of arsenic and iron. [1913 Webster]