uraninite
ura·ni·nite
noun \yu̇-ˈrā-nə-ˌnīt\Definition of URANINITE
: a black octahedral mineral that consists of an oxide of uranium which usually contains thorium, lead, and rare earth elements and is the chief ore of uranium
See Origin of URANINITE
German Uranin uraninite (from New Latin uranium) + English -ite
First Known Use: 1879
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