pitchblende


pitch·blende

noun \ˈpich-ˌblend\

Definition of PITCHBLENDE

:  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

Origin of PITCHBLENDE

part translation of German Pechblende, from Pech pitch + Blende blende
First Known Use: 1770

pitch·blende

noun \ˈpich-ˌblend\   (Medical Dictionary)

Medical Definition of PITCHBLENDE

: 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

pitchblende

noun    (Concise Encyclopedia)

Amorphous, dense, black, pitchy form of the crystalline uranium oxide mineral uraninite; it is one of the primary mineral ores of uranium. Pitchblende is found in granular masses and has a greasy lustre. Three chemical elements were first discovered in pitchblende: uranium, polonium, and radium. Deposits, frequently in association with uraninite or with secondary uranium minerals, are known in the Czech Republic, Britain, the Northwest Territories and Saskatchewan in Canada, and Arizona, Colorado, Montana, New Mexico, and Utah in the U.S.

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