- a massive variety of uraninite, occurring in black pitchlike masses: a major ore of uranium and radium.
Origin of pitchblende
Examples from the Web for pitchblende
Historical Examples of pitchblende
It occurs in the pitchblende of Saxony, and the uranite of Cornwall.Cooley's Practical Receipts, Volume II
Pitchblende also occurs, and is mined for the extraction of radium.
Suppose a bearer of the Medal of Honor formed a stock corporation to exploit the pitchblende of Callisto.
The project at hand is to extract the newly discovered deposits of pitchblende on these satellites of Jupiter.
M. Debierne has obtained a third radioactive substance from pitchblende, which he has called “Actinium.”Alchemy: Ancient and Modern
H. Stanley Redgrove
- 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: UO 2
Word Origin for pitchblende
- A brown to black, often crusty, cubic mineral that is a principal ore of uranium. It is highly radioactive. Chemical formula: UO2.