'chalcosine' definitions:

Definition of 'chalcosine'

From: GCIDE

Chalcocite \Chal"co*cite\, n. [Gr. chalko`s brass.] (Min.) Native copper sulphide, called also copper glance, and vitreous copper; a mineral of a black color and metallic luster. [Formerly written chalcosine.] [1913 Webster] Chalcographer