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xanthoconite

noun xan·thoc·o·nite \ zanˈthäkəˌnīt \

Definition of xanthoconite

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

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Origin and Etymology of xanthoconite

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

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