Pitchblende
['pɪtʃblend] or ['pɪtʃ,blɛnd]
Definition
(n.) A pitch-black mineral consisting chiefly of the oxide of uranium; uraninite. See Uraninite.
Typist: Malcolm
Examples
- There is (according to Soddy) about on e part of radium in five million parts of the best pitchblende, but the new element is about one million times more radio active than uranium. Walter Libby. An Introduction to the History of Science.
- In the chemical analysis of pitchblende mad e by Mme. Walter Libby. An Introduction to the History of Science.
- This discovery naturally led to further investigation, on the assumption that pitchblende contains more than one radioactive substance. Walter Libby. An Introduction to the History of Science.
Typed by Bert