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据联合国资料,按照1970年的状况,世界铁矿资源估计为7800亿吨(其中储量为2510亿吨).其中约有80%集中在苏联、美国和南美.组成上述资源的矿石类型有:赤铁矿矿石(占22%),磁铁矿矿石(10%),针铁矿矿石(15%),其余的属于混合矿石.1850～1974年的125年间,铁矿石的需要是210亿吨,而到2000年的25年间则为480亿吨(以钢产量每年增长5%计).对铁矿石需要量的增长,促进了巴西、澳大利亚、非洲、加拿大和其他国
According to the United Nations, according to the situation in 1970, the world’s iron ore resources are estimated at 780 billion tons (251 billion tons of which reserves), of which about 80% are concentrated in the Soviet Union, the United States and South America. Iron ore (22%), magnetite ore (10%), goethite ore (15%) and the rest are mixed ores. For 125 years from 1850 to 1974, the demand for iron ore was 21 billion tons Compared with 48.0 billion tons in 25 years of 2000 (at an annual rate of 5% increase in steel production). The increase in iron ore demand has contributed to Brazil, Australia, Africa, Canada and other countries