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argentite

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ar·gen·tite  (ärjn-tt)
n.
A valuable silver ore, Ag2S, with a lead-gray color and metallic luster that is often tarnished a dull black.

argentite [ˈɑːdʒənˌtaɪt]
n
(Earth Sciences / Minerals) a dark grey mineral that consists of silver sulphide, usually in cubic crystalline forms, and occurs in veins, often with native silver. It is found esp in Mexico, Nevada, and Saxony and is an important source of silver. Formula: Ag2S
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.argentite - a valuable silver ore consisting of silver sulfide (Ag2S)
Ag, atomic number 47, silver - a soft white precious univalent metallic element having the highest electrical and thermal conductivity of any metal; occurs in argentite and in free form; used in coins and jewelry and tableware and photography
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition


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In addition to pyrite, pyrrhotite, chalcopyrite, and sphalerite, Dolmage (1922) noted the presence of magnetite, arsenopyrite, native silver, and possible argentite, and mentioned that Bancroft had found small amounts of galena.
Ore minerals include gold, silver, chalcopyrite (CuFeS2), galena (PbS), bornite (CuFeS4), covellite (CuS), chalcocite (Cu2S), anglesite (PbSO4), sphalerite (ZnS), argentite (Ag2S), cerussite (PbCO3) and smithsonite (ZnCO3).
Silver occurred as discrete microscopic crystals of native silver and argentite.
 
 
 
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