Hypertext Webster Gateway: "argentite"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Argentite \Ar"gen*tite\, n. [L. argentum silver.] (Min.)
Sulphide of silver; -- also called {vitreous silver}, or
{silver glance}. It has a metallic luster, a lead-gray color,
and is sectile like lead.
From WordNet (r) 1.7 (wn)
argentite
n : a valuable silver ore consisting of silver sulfide (Ag2S)
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