摘要
天湖铁矿床是新疆东部已知大型铁矿床之一。矿床以层状、似层状产于晚元古代天湖群(1060Ma)角闪岩相变质火山-沉积岩系内,呈以白云质大理岩为容矿岩的条纹一条带状磁铁矿,属变质含铁碳酸盐建造。本文从成矿地质环境、变质作用、矿石矿物学等几个方面对其地质特征、矿床类型和成因进行了探讨,并与国内同类型矿床进行了比较。
The iron ore deposit occurs in metamorphic volcanic sedimentary sequence, iron ores are stricktly controlled by strata,namely,the third formation of Proterozoic Tianhu Group.Most orebodies present stratiform and lenticullen composed by striped magnetite hosted ankeritic morble, some superimposed by Mg-skarnization metamorphism, it has been attuributed to later migmatization. Based on the mineral assemblages of two ores may be established, i.e.the iron-carbonate as a for volcanic-sedimentary ore, and the iron-silicate which represent the metamorphic modification ore. According to the stratigraphy, petrology, mineralogy and geochemistry studies, this paper contains the discussion of the geological characteristics and genetic classification of ore deposit The authors consider that the deposit bears more resemblance to the stratabound iron carbonate facies iron formation by comparison with other deposits in China.
