The large-scale gravity and magnetic survey was carried out in the area delineated jointly by magnetic anomaly and gravity anomaly in Qihe-Yucheng area of Shandong Province.The rich iron ore deposit with a total thickness of 72.73m and a total iron grade of 56.75％ were found for the first time and verified by drilling,which achieved a significant new discovery in geological prospecting.The orebodies which belong to skarn type magnetite were formed in the contact zones between late Yanshanian intermedite-basic magrnatic rock and Ordovician limestone.The discovery of the iron ore deposit is one of the most important geological discoveries in recent years in Shandong Province,which opens up a very broad prospect for further development of rich iron ore exploration in Qihe-Yucheng area.%在山东省齐河—禹城一带,选择航磁异常与区域重力异常套合地区,实施了大比例尺重磁测量,经钻探验证在该区首次发现了总厚度72.73m、全铁平均品位56.75％的厚大富磁铁矿,取得了地质找矿的重大新发现.矿体产于燕山晚期中-基性岩浆岩与奥陶纪马家沟群灰岩的接触带上,矿床成因为矽卡岩(接触交代)型磁铁矿床.该铁矿的发现是山东省近年来地质找矿的重大发现之一,预示在齐河—禹城地区进一步开展富铁矿找矿工作具有十分广阔的前景.
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