URANINITE
\jˈʊ͡əɹɐnˌɪna͡ɪt], \jˈʊəɹɐnˌɪnaɪt], \j_ˈʊə_ɹ_ɐ_n_ˌɪ_n_aɪ_t]\
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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
By Princeton University