pitchblende

/pich-blend/US // ˈpɪtʃˌblɛnd //UK // (ˈpɪtʃˌblɛnd) //

黝黑岩,黝黑石膏,黝黑石,沥青岩

Definitions

n.名词 noun

1
Mineralogy.
- : a massive variety of uraninite, occurring in black pitchlike masses: a major ore of uranium and radium.

Steen had found a deposit of pitchblende, which today geologists call uraninite, a rich and radioactive ore.
Radium was discovered in 1898 by M. and Madame Curie and M. Bmont, while experimenting with the uranium mineral pitchblende.
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.
Uranium occurs chiefly as pitchblende, which is an impure oxide (U3O8).
Her thoughts were for the moment on that strange brownish-black rock her father called pitchblende.