安徽省巢湖市尖山铁矿北段地质特征及找矿标志  

Geological characteristics and prospecting criteria in the north section of Jianshan iron deposit in Chaohu City,Anhui Province

作　　者：李道志 LI Daozhi(No.327 geological team,Bureau of Geology and Mineral Exploration of Anhui Province,Hefei 230011,Anhui,China)

机构地区：[1]安徽省地质矿产勘查局327地质队,安徽合肥230011

出　　处：《资源信息与工程》2022年第1期37-39,43,共4页Resource Information and Engineering

摘　　要：安徽省巢湖市尖山铁矿北段位于肥东新太古代—早元古代变质岩区浮槎山—大康集复背斜中段南东翼,铁矿体主要赋存于大横山岩组斜长片麻岩中,属沉积变质型铁矿床。基础地质和成矿作用研究工作揭示了该区具有寻找沉积变质型铁矿的良好前景,但本区铁质来源不够丰富,而且地壳振荡运动频繁,以致矿体范围较小;虽然矿层层数多,但单层薄,规模偏小。文章通过对该矿床的地质特征及磁异常特征的总结,探讨矿床成因并提出找矿标志,以期为下一步该区找矿新突破提供有力支撑。The north section of Jianshan iron ore mine in Chaohu City,Anhui Province is located in the south east wing of middle section of Fucha mountain—Dakangji anticlinorium in late Neoarchean and early Proterozoic metamorphic rock area of east Hefei,with iron ore body mainly deposited in plagioclase gneiss of Dahengshan rock association,which belongs to sedimentary metamorphic iron deposit.The research on basic geology and mineralization reveals that the area has a good prospect for sedimentary metamorphic iron ore.However,due to inadequate iron source in this area and frequent oscillation motion of the earth's crust the mineral body range is small.In spite of large number of mineral layers,the single layer is thin,and the scale is small.This paper mainly summarized geological characteristics and magnetic anomaly characteristics of the deposit,discussed deposit genesis and prospecting criteria,with a view to providing strong support for next prospecting breakthrough in this area.

关 键 词：尖山铁矿北段 沉积变质型铁矿 地质特征 找矿标志 

分 类 号：P618.31[天文地球—矿床学]