pyrargyrite
noun
Definitions
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.
Synonyms:ruby silver
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Definitions
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.