地面高精度磁法在萤石矿勘查中的应用  

Application of high-accuracy ground magnetic survey to the exploration of fluorite deposits

作　　者：于汪 王猛[1] 商朋强 黄俭合[1] 王岳 Yu Wang;Wang Meng;Shang Pengqiang;Huang Jianhe;Wang Yue(Geological Institute of China Chemical Geology and Mine Bureau,Beijing 100101,China;General Institute of Chemical Geology Survey of China Chemical Geology and Mine Bureau,Beijing 100013,China;Fujian Geological Exploration Institute of China Chemical Geology and Mine Bureau,Fuzhou 350013,Fujian,China)

机构地区：[1]中化地质矿山总局地质研究院,北京100101 [2]中化地质矿山总局化工地质调查总院,北京100013 [3]中化地质矿山总局福建地质勘查院,福建福州350013

出　　处：《地质学刊》2019年第3期428-433,共6页Journal of Geology

基　　金：中国地质调查局项目“东部地区硼磷萤石等重要非金属矿产调查”(DD20160057);中国煤炭地质总局科技项目“物化探综合找矿方法在非金属矿找矿中的应用研究”(ZMKJ-2017-12)

摘　　要：以我国东部地区中低温热液充填型萤石矿床为研究对象,区域内萤石矿主要受中生代构造-岩浆活动带控制,萤石矿成矿与中生代大规模的构造-岩浆活动尤其是燕山期中酸性岩浆活动关系密切。高精度磁测作为一种快速、经济的物探方法,通过在典型矿区及找矿靶区开展地面高精度磁测有效性试验,总结了控矿构造破碎带磁异常特征,结果表现在低值异常或正负异常分界处。该方法基本能够反映构造-矿化蚀变带的存在及其大致展布方向,为浅覆盖区及中深部非金属矿找矿提供了理论和实践依据。The paper studied the intermediate to low-temperature hydrothermal filling fluorite deposits in eastern China.Controlled by the Mesozoic tectonic-magmatic activity zone,the fluorite deposit metallogeny is closely related to the large-scale tectonic-magmatic activity,especially the Yanshanian intermediate-acid magmatic activity.High-accuracy ground magnetic survey is a fast and economic geophysical exploration method.By testing the validity of the high-accuracy ground magnetic survey in the typical mining and prospecting target areas,the paper summarizes the magnetic anomaly characteristics of the fracture zone of the ore-controlling structure,and the result shows it is the low-value anomaly or positive-negative anomaly boundary.This method can basically reflect the existence and its general spread direction of the tectonic-mineralization erosion zone,and provides theoretical and practical basis for the shallow coverage area,the middle and deep non-metallic ore prospecting.

关 键 词：萤石矿 中低温热液充填型 高精度磁法 构造破碎带 

分 类 号：P631.221[天文地球—地质矿产勘探] P619.215[天文地球—地质学]