ARGENTITE
argentite
(noun) a valuable silver ore consisting of silver sulfide (Ag2S)
Source: WordNet® 3.1
Noun
argentite (countable and uncountable, plural argentites)
(mineral) Silver sulfide, (Ag2S), a primary ore of silver, in cubic or hexoctahedral crystals.
Anagrams
• ganterite, integrate
Source: Wiktionary
Ar"gen*tite, n. Etym: [L. argentum silver.] (Min.)
Definition: Sulphide of silver; -- also called vitreous silver, or silver
glance. It has a metallic luster, a lead-gray color, and is sectile
like lead.
Source: Webster’s Unabridged Dictionary 1913 Edition