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Noun: pitchblende  'pich,blend
  1. 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
    "pitchblende was a key source of radium for Marie Curie's research";
    - uraninite

Derived forms: pitchblendes

Type of: uranium ore

Encyclopedia: Pitchblende