An orange-red to grayish yellow mixture of several uranium oxides, silicates, and salts occurring naturally in the oxidation and hydration of uraninite.
脂铅铀矿一种由桔红到黄灰色的多种铀氧化物、硅酸盐和盐的混和物,在铀矿物的自然。
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In the paper, the world uranium resources, its distribution and changes in some countries are introduced by using the information from Red Book (No. 21) published in 2006.