quisqueite

noun

quis·​que·​ite

ˈkiskēˌīt

plural -s

: a brittle black lustrous substance mostly composed of sulfur and carbon and accompanying the vanadium ores of Peru : sulfurous asphaltum

Word History

Etymology

Quisque, district near Mina Ragra, Pasco, Peru, its locality + English -ite

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