长江中下游成矿带深部铁矿找矿的思考

长江中下游成矿带是以燕山期岩浆成矿作用为主的一条陆内成矿带,区内已知铁矿类型主要有产于火山-沉积盆地区与中(基)性火山-侵入作用和偏碱性岩浆侵入作用有关的铁矿床,以及产于隆起区、隆-坳过渡区的与中性岩浆侵入作用有关的两大类铁矿床.本文在区域铁矿成矿背景研究基础上,对区内铁矿类型进行了简要划分,指出影响铁矿找矿突破需要解...

Consideration on the deep-iron ore deposits prospectingin the middle-lower Yangtze River metallogenic belt

The middle-lower Yangtze metallogenic belt is a intra-continental belt dominated by Yanshannian Mineralization. The iron ore deposits are mainly found either in volcanic-sedimendary basin and related genetically to the intrusion of intermediate to mafic magma and slightly alkaline magma, or locate in the uplift area and the transitional zone of uplift and subside. Based on the investigation of regional metallogenic background, the iron ore types are subdivided and some factors might affect the breakthrough in iron deposits prospecting are also pointed out. According to the progresses in deep-iron deposits prospecting, the similarities and differences in iron mineralization in Ningwu and Luzong volcanic-sedimendary basins, along with some issues might be confronted with in deep-iron ore prospecting are discussed. It is suggested that the deep-iron prospecting in this area should focus on the floor of the sedimentary basin and transitional zone of the basin and uplift areas. Looking for Daye-type Cu-Fe, Tongling-type Fe-Cu and porphyry Cu deposits are the main prospecting targets in the future work.