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
argentite in American English
(ˈɑrdʒənˌtaɪt)
noun
native silver sulfide, a lead-gray cubic mineral, Ag2S, that is an important ore of silver