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uraninite |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Uraninite \U*ran"i*nite\, n. (Min.) A mineral consisting chiefly of uranium oxide with some lead, thorium, etc., occurring in black octahedrons, also in masses with a pitchlike luster; pitchblende. From WordNet r 1.6 [wn]: uraninite n : 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 [syn: {pitchblende}]
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