Abstract:Rich iron deposits of Anshan Group occur almost merely in lean iron ore beds with great thickness and huge size. In addition to this stratigraphic horizon condition, these rich iron deposits also owe their formation to the enrichment process by superimposed metallization, which include retrogressive metamorphism and migmatization. The rich iron ore formed by retrogressive metamorphism has the same major and minor element association as the poor iron ore, with its magnetite containing considerable amounts of chromium, magnesium, titanium and copper, while that formed by migmatization possesses obviously different element components from the poor iron ore and contains abundant copper, lead, zinc and tin. Based on the above different enrichment processes, the author has established in this paper four genetic types for rich iron deposits: (1) metamorphosed primarily sedimentary rich iron deposits; (2) late retrogressive metamorphic rich iron deposits; (3) primarily sedimentary-late retrogressive metamorphic rich iron deposits; (4) primarily sedimentary-late migmatized rich iron deposits.
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王守伦.1986.鞍本地区鞍山群富铁矿成因类型的讨论[J].矿床地质,5(4):14~22.1986.The Genetic Types Of Rich Iron Deposits Of Anshan Group Ln Anshan-Benxi Area[J].Mineral Deposits5(4):14~22
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