uraninite Min.
(jʊˈrænɪnaɪt)
[f. uranium + -in1: see -ite1 2 b.]
Pitchblende.
| 1879 Amer. Jrnl. Sci. Ser. iii. XVIII. 153 The masses contain in many cases, a nucleus of uraninite. 1897 L. Fletcher Introd. Study Min. 89 Uraninite, or Pitchblende, consists almost entirely of oxygen and uranium. |