xanthoconite

noun

xan·​thoc·​o·​nite

zanˈthäkəˌnīt

plural -s

: a cochineal-red to orange-yellow to brown mineral Ag₃AsS₃ consisting of a silver arsenic sulfide and occurring in tabular crystals and often flat rhombohedrons compare proustite

Word History

Etymology

German xanthokon xanthoconite (from xanth- + Greek konis dust) + English -ite; from the color of its streak powder

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