'Pyrargyrite' definitions:

Definition of 'Pyrargyrite'

From: GCIDE

Pyrargyrite \Py*rar"gy*rite\, n. [Gr. ? fire + ? silver.] (Min.) Ruby silver; dark red silver ore. It is a sulphide of antimony and silver, occurring in rhombohedral crystals or massive, and is of a dark red or black color with a metallic adamantine luster. [1913 Webster] Pyrazine