| pitchblende |
uraninite: 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
출처: wordnet.princeton.edu/perl/webwn
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| pitchblende |
Uraninite is a uranium-rich mineral with a composition that is largely UO2 (uranium oxide), but which also contains UO3 and oxides of lead, thorium, and rare earths. It is most commonly known in the variety pitchblende. All uraninite minerals contain a small amount of radium as a radioactive decay product of uranium; it was in pitchblende from the J?hymov in Czechoslovakia that Marie Curie discovered radium. ...
출처: en.wikipedia.org/wiki/Pitchblende
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| pitchblende |
the most common ore of uranium, which is dominantly composed of the mineral uraninite.
출처: www.amonline.net.au/geoscience/earth/terms.htm
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| pitchblende |
A brown to black fine grained, amorphous, variety of uraninite which has a dull luster and contains small quantities of uranium. Also called pitch ore or nasturan.
출처: www.nuenergy.org/alt/glossary.htm
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