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Definition of Stibnite
1. Noun. A soft grey mineral; the chief ore of antimony.
Definition of Stibnite
1. n. A mineral of a lead-gray color and brilliant metallic luster, occurring in prismatic crystals; sulphide of antimony; -- called also antimony glance, and gray antimony.
Definition of Stibnite
1. an ore of antimony [n -S]