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pitchblende

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pitchblende

Main Entry:: pitch·blende
Pronunciation:: \ˈpich-ˌblend\
Function:: noun
Etymology:: part translation of German Pechblende, from Pech pitch + Blende blende
Date:: 1770

: a brown to black mineral that consists of massive uraninite, has a distinctive luster, contains radium, and is the chief ore-mineral source of uranium

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