Pitchblende (noun) Definition, Meaning & Examples

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noun Mineralogy.
  1. a massive variety of uraninite, occurring in black pitchlike masses: a major ore of uranium and radium.
noun
  1. a blackish mineral that is a type of uraninite and occurs in veins, frequently associated with silver: the principal source of uranium and radium. Formula: UO 2
    Pitchblende (noun) Definition, Meaning & Examples

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