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uraninite

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uraninite

Main Entry:: ura·ni·nite
Pronunciation:: \yu̇-ˈrā-nə-ˌnīt\
Function:: noun
Etymology:: German Uranin uraninite (from New Latin uranium) + English -ite
Date:: 1879

: 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

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