Pitchblende

n.

1.

(Min.) A pitch-black mineral consisting chiefly of the oxide of uranium; uraninite. See Uraninite.

Noun

1.

pitchblende - 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 Synonyms: uraninite

atomic number 92, mineral, U, uraninite, uranium, uranium ore