n.瀝青油礦

Pitchblende and chalcolite are much more radioactive than uranium itself. 瀝清鈾礦和銅鈾云母比純鈾的放射性強(qiáng)得多。

Pitchblende is the most important industrial uranium mineral in China. 瀝青鈾礦是我國(guó)最重要的工業(yè)鈾礦物。

By good fortune they were able to get from the movement of Austria a ton of pitchblende. 幸運(yùn)的是，他們從澳大利亞政府部門搞到了1噸瀝青油礦。

Marie began working with pitchblende because it contained uranium, but was cheaper to buy than pure uranium. 瑪麗開始用瀝青鈾礦做試驗(yàn)，因?yàn)闉r青鈾礦含著鈾，但是要比純鈾便宜得多。

Pitchblende is the only primary uranium mineral, which is associated with quartz, fluorite, hematite and pyrite. 瀝青鈾礦是礦石中唯一的原生鈾礦物,其共生礦物主要有石英、螢石、赤鐵礦和黃鐵礦。