【摘要】 根据地质找矿实践结果和统计资料，证明我国多重（级）富集是工业富铁矿形成的核心机制，如：１．我国富铁矿的主要类型为矽卡岩型（接触交代－热液型）、多因复合－叠加型及火山岩型；２．以上三种类型铁矿探明富矿占全国富矿资源量的８９％。同时本文还简单阐述了长江中下游铁矿找矿的几个问题：１．铁矿类型；２．产出地区；３．地表矿化现象；４．弱磁异常及复杂磁异常。更多还原

【Abstract】 Data available shows that multi-stage enrichment is the key metallogenic mechanism for rich iron ore in china. The rich iron ore is divided into ①contact metasomatic replacement-hydrothermal type, ②multi-genetic overprinting type, ③volcanic type. The proven reserve of the three types is about 89% of the total rich iron ore in china. On the statistical basis of the results several problems for iron ore prospecting in Middle and Lower Reach of Yangtze River are discussed in the paper.更多还原