The radiometric age of pitchblende is 109-108 m.

沥青铀矿的同位素年龄为108—109百万年。

The pitchblende is the chief industrial mineral.

沥青轴矿是主要工业矿物。

Uranium mineral is pitchblende which was formed in Lower Proterozoic.

铀矿物主要为沥青铀矿，形成于早元古代。

The initial lead in pitchblende belongs to radioactive origin from crust.

沥青铀矿中的初始铅属地壳放射成因。

Then she found that pitchblende was more radioactive than uranium by itself.

于是她发现沥青油矿，它的放射性要比铀本身还要强。