前寒武纪变质铁矿储量占世界铁矿总储量的60％,在美国占76.1％,在苏联占61.7％,在澳大利亚占60％。尤其是澳大利亚在1960年前还是贫铁国家,1964年后一跃而为富铁国家,也是因为在前寒武纪变质铁矿方面取得了突破。这种类型矿床储量在国内也占将近49％。它规模大而稳定,多数好采易选,故经济意义十分重大。从1900-1965年以来,对这种矿床的成因,众说纷纭,到五十年代后半期有所进展,我们认为是沉积变质的。 Precambrian metamorphic iron ore reserves account for 60% of the world’s total iron ore reserves, accounting for 76.1% in the United States, 61.7% in the Soviet Union and 60% in Australia. In particular, Australia was still a poor country until 1960 and its first iron-rich country since 1964, because of the breakthrough made in the Precambrian metamorphic iron ore. This type of deposits also account for nearly 49% of the country. It is large and stable, most of which are good and easy to choose, so the economic significance is very big. Since 1900-1965, the causes of this deposit have varied widely and progress has been made in the second half of the 1950s, which we believe to be metamorphic.