platynite
noun
plat·y·nite
variants or platinite
ˈplatəˌnīt
plural -s
: a mineral PbBi2(Se,S)3 consisting of a lead and bismuth selenide and sulfide and occurring in thin iron-black metallic plates
Word History
Etymology
Swedish platynit, from Greek platynein to widen, flatten (from platys broad, flat) + Swedish -it -ite