zanˈthäkəˌnīt noun
( -s )
Etymology: German xanthokon xanthoconite (from xanth- + Greek konis dust) + English -ite; from the color of its streak powder — more at incinerate
: a cochineal-red to orange-yellow to brown mineral Ag 3 AsS 3 consisting of a silver arsenic sulfide and occurring in tabular crystals and often flat rhombohedrons — compare proustite