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一、世界稀土资源稀土元素和其它稀有元素一样,并不稀有,它们在地壳中的含量超过铜、铅、锌、锡、银和汞等金属,问题是稀土分散产出。目前已知含稀土的矿物有250多种,其中稀土元素含量较高的矿物(约5～8%)有60余种,但具有工业利用价值的不足10种,而最有开采价值的是氟碳铈矿、独居石和磷钇矿。铀残渣是重稀土和钇的重要来源。其它矿物如褐帘石、黑稀金矿、褐钇铌矿、钛铌钙铈矿和磷灰石也是稀土的工业资源。磷块岩是稀土工业的巨大潜在资源。
First, the world’s rare earth resources Rare earth elements and other rare elements, as rare, they are in the crust more than copper, lead, zinc, tin, silver and mercury and other metals, the problem is the dispersion of rare earth output. At present, there are over 250 kinds of rare earth-bearing minerals, of which, there are more than 60 kinds of minerals (about 5 to 8%) with higher rare earth elements, but have less than 10 kinds of industrial utilization value, and the most valuable is fluorine Cesium, monazite and xenotime. Uranium residue is an important source of heavy rare earths and yttrium. Other minerals such as brown curtain stone, black thin gold, brown yttrium niobium ore, titanium niobium cerium ore and apatite are also rare earth industrial resources. Phosphorite is a tremendous potential resource for the rare earth industry.