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Pitchblende

noun

Noun

1
Naturally-occurring uranium oxide, a variety of the mineral uraninite. countable, uncountable
"Working in Paris in 1898, Marie and Pierre Curie processed thousands of pounds of pitchblende from the same glass-factory tailings in order to isolate two radioactive elements that had hitherto been unknown: radium and polonium."
2
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 wordnet

From German Pechblende, from Pech (“pitch”) + Blende (“blende”).

Unscramble this word: pitchblende