Hypertext Webster Gateway: "stibnite"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Stibnite \Stib"nite\, n. (Min.)
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}.
From WordNet (r) 1.7 (wn)
stibnite
n : a soft gray mineral; the chief ore of antimony
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