辽宁省抚顺棋盘山矿区物化探地质特征及找矿方向浅析  

Geophysical and Geochemical Characteristics and Prospecting Direction of the Qipanshan Mining Area in Fushun,Liaoning Province

作　　者：吴志国[1] WU Zhiguo(The Tenth Geological Team of Liaoning Province,Fushun,Liaoning 113000)

机构地区：[1]辽宁省第十地质大队

出　　处：《地质与勘探》2019年第5期1164-1172,共9页Geology and Exploration

基　　金：辽宁省地质勘查基金项目(编号:辽国土资项发[2008]31号)资助

摘　　要：本文以辽宁抚顺棋盘山矿区为例,从区域地质背景入手对矿区的地质特征、物化探特征、矿化体特征进行了论述,指出花岗斑岩体具有良好的分带性、为低阻高极化体,且与土壤地球化学异常吻合。重点分析了Au、Mo矿化体的空间分布规律、原生晕的分带规律以及矿化体与蚀变之间的关系,指出Au矿化体多产于岩体内部的断裂带内,且与硅化、褐铁矿化、黄铁矿化关系密切;而Mo矿化体呈矿化带产于岩体的外接触带中,与硅化关系密切;原生晕在轴向上具有Pb-Ag-Zn-Au-Mo-Cu的分带特征。同时总结了矿区的地质、物化探异常以及蚀变等方面的找矿标志,指明化探异常地段以及岩体接触带是下一步找矿重点方向。This paper describes the features of geology,geophysics,geochemistry and mineralized bodies in the Qipanshan mining area,Fushun,Liaoning Province. It is pointed out that the granite porphyry body in this area has good zoning,low resistance and high polarization,consistent with soil geochemical anomalies. The spatial distribution of Au and Mo mineralized bodies,the zoning of primary halos,and the relationship between mineralized bodies and alterations are analyzed. It is noted that the Au mineralized bodies mostly occur in fault zones inside rock mass,closely related with silicification,limonite mineralization and luteal mineralization. While the Mo mineralized bodies ap0pear in the outer contact zones of the rock mass,closely associated with silicidation. The primary haloes exhibit a zoning characteristic of Pb-Ag-Zn-Au-Mo-Cu in the axial direction. From geology,geophysical and geochemical anomalies and alterations in the mining area,possible indicators for ore search are summarized. It is suggested that the anomaly sections of geochemical exploration and the contact zones of rock mass should be the key directions of prospecting in the future.

关 键 词：物化探地质特征 找矿方向 棋盘山矿区 抚顺 辽宁 

分 类 号：P631.6[天文地球—地质矿产勘探] P632.1[天文地球—地质学]