Definisi 'pitchblende'
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English to English noun
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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 |  | source: wordnet30
2 |
A pitch-black mineral consisting chiefly of the oxide of uranium; uraninite. See Uraninite. |  | source: webster1913
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