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Related to pitchblende: radium
A massive variety of the mineral uraninite.
[Partial translation of German Pechblende : Pech, pitch + Blende, blende; see blende.]
(Minerals) a blackish mineral that is a type of uraninite and occurs in veins, frequently associated with silver: the principal source of uranium and radium. Formula: UO2
[C18: partial translation of German Pechblende, from Pech pitch2 (from its black colour) + blende]
a massive variety of uraninite, occurring in black pitchlike masses: a major ore of uranium and radium.
A brown to black, often crusty mineral that is a principal ore of uranium. It is highly radioactive.
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|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|
atomic number 92, uranium, U - a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons
uranium ore - any ore from which uranium can be extracted