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众所周知,作为稀土资源的重要矿物是独居石、氟碳铈矿和磷钇矿。估计全世界稀土的贮藏量约有4700万短吨,其中约3100万短吨贮于美国,苏联的稀土贮量占世界的比例也令人注目,印度、加拿大、澳大利亚、巴西等国贮藏量也不少。 1981年稀土原料(氟碳铈矿、独居石、氯化稀土)的产量为30,200短吨,过了三万吨大关,比前年产量增加了10.6％。美国具体产量不详,但1978年的氟碳铈矿产量是15,600短吨(REO含量),约占世界稀土产量的50％。
As we all know, as an important resource of rare earth minerals monazite, bastnaesite and xenotime. It is estimated that there are about 47 million short tons of rare earth in the world, about 31 million short tons of which are stored in the United States. The proportion of the world’s rare earth reserves in the Soviet Union is also notable. The reserves in India, Canada, Australia, Brazil and other countries A lot. In 1981, the output of rare earth materials (bastnaesite, monazite and rare earth chloride) was 30,200 short tons, surpassing the 30,000 tons mark, an increase of 10.6% over the previous year’s output. The specific output in the United States is unknown, but the bastnaesite production in 1978 was 15,600 short tons (REO content), accounting for about 50% of the world’s rare earth production.