n.沥青油矿
Pitchblende and chalcolite are much more radioactive than uranium itself. 沥清铀矿和铜铀云母比纯铀的放射性强得多。
Pitchblende is the most important industrial uranium mineral in China. 沥青铀矿是我国最重要的工业铀矿物。
By good fortune they were able to get from the movement of Austria a ton of pitchblende. 幸运的是，他们从澳大利亚政府部门搞到了1吨沥青油矿。
Marie began working with pitchblende because it contained uranium, but was cheaper to buy than pure uranium. 玛丽开始用沥青铀矿做试验，因为沥青铀矿含着铀，但是要比纯铀便宜得多。
Pitchblende is the only primary uranium mineral, which is associated with quartz, fluorite, hematite and pyrite. 沥青铀矿是矿石中唯一的原生铀矿物,其共生矿物主要有石英、萤石、赤铁矿和黄铁矿。
