pyrargyrite

Noun. (mineralogy) Ruby silver; dark red silver ore. It is a sulphide of antimony and silver, Ag₃SbS₃, occurring in rhombohedral crystals or massive, and is of a dark red or black color with a metallic adamantine luster; it is an important silver ore.

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This entry was last updated on RefTopia from its source on 3/20/2012.