ˈziŋkəˌnīt noun
( -s )
Etymology: German zinkenit, from J. K. L. Zinken died 1862 German mineralogist + German -it -ite
: a steel-gray mineral Pb 6 Sb 14 S 27 of metallic luster consisting of a lead antimony sulfide and occurring in orthorhombic crystals and in masses (hardness 3-3.5, specific gravity 5.30-5.35)