【世界核协会网站2009年8月报道】铀通常被人们认为是一种稀有金属,但实际上铀在地壳中的分布非常广泛,其在地壳中的含量是金的500倍,银的40倍,与锡、钨和钼的含量相当。地壳中大部分岩石与海水中都含有铀(见表1)。表1铀在各种载体中的含量载体铀含量极高品位矿石(加拿大)20000 [World Nuclear Association website reported in August 2009] Uranium is generally considered to be a rare metal, but in fact uranium is widely distributed in the earth’s crust. Its content in the earth’s crust is 500 times that of gold and 40 times that of silver , With tin, tungsten and molybdenum content. Uranium is found in most of the earth’s crust and seawater (Table 1). Table 1 Uranium content in a variety of carriers Vector Uranium content of high grade ore (Canada) 20000