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Uraninite

//jʊˈɹeɪnɪnaɪt// noun

Definitions

Noun
  1. 1
    Any of several brownish-black forms of uranium dioxide, UO₂, (especially pitchblende) that is the chief ore of uranium; it is isomorphous with thorianite.
  2. 2
    a mineral consisting of uranium oxide and trace amounts of radium and thorium and polonium and lead and helium; uraninite in massive form is called pitchblende which is the chief uranium ore wordnet

Etymology

From uran- + -ine + -ite.

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