pyrargyrite

English Noun

Definition

A sulfosalt mineral used as a silver ore; it is dark red or black in color with a metallic adamantine luster, a sulfide of antimony and silver, Ag₃SbS₃, and occurs in rhombohedral crystals.

Etymology

From Ancient Greek πῦρ (pûr, “fire”) + ἄργῠρος (árgŭros, “silver”). By surface analysis, pyr- + argyr- + -ite.