 pitchblende |
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| 1. | [ noun ] (geology,mining) 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 | |
| Synonyms: | uraninite | |
| Related terms: | mineral uranium_ore uranium | |
| Similar spelling: |
pitch_apple |
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