ˈbōrnəˌnīt, ˈbȯr-, ˈbu̇r- noun
( -s )
Etymology: Count J.L.de Bournon died 1825 French mineralogist + English -ite
: a mineral PbCuSbS 3 consisting of a steel-gray or black metallic-looking sulfide of antimony, lead, and copper occurring in orthorhombic crystals, and also massive — see wheel ore