综合物探方法在萤石矿勘查中的应用  

Application of Integrated Geophysical Prospecting in Fluorite Orebody Exploration

作　　者：王猛[1] 黄俭合[1] Wang Meng;Huang Jianhe(Geological Research Institute,China Chemical Geology and Mine Bureau,Zhuozhou,Hebei 07275)

机构地区：[1]中化地质矿山总局地质研究院,河北涿州072754

出　　处：《中国煤炭地质》2018年第A01期118-124,共7页Coal Geology of China

摘　　要：以河北隆化县招素沟萤石矿区为例,介绍高精度磁测、高密度电法及联合剖面法等方法在隐伏-半隐伏萤石矿体开展综合勘查的效果。根据1∶1万高精度磁测异常值,推断ΔT场负异常为萤石矿体的反映;矿区西部的已知断裂构造与正负磁异常分界线完全吻合,确认为成矿构造,且向下延伸较浅,深部成矿的可能性较小。在已知矿体区域布置了3条地电剖面,发现由断裂控制的萤石矿体基本与低阻异常带相对应。在矿体磁异常区,依据构造控矿引起的矿化低阻异常与联合剖面的正交异常点的对应关系,推测在后程子沟和二道营子北沟2条地电剖面均存在由隐伏断裂构造控制的萤石矿体,建议该区域作为成矿有利地段予以重视。Taking the Zhaosugou fluorite ore district as an example, has introduced the launching of high-precession magnetic survey, high-density electric survey and combined profiling method integrated prospecting effect in buried, partly-buried fluorite orebodies. Based on 1∶10,000 high-precession magnetic survey anomalous data, have inferred the Δ T field negative anomaly as the reflection of fluorite orebody. The known faulted structures in the western part of the ore district are perfectly matched with positive and negative magnetic anomalous boundaries and determined as mineralizing faults, but shallowly extending downwards, thus the deep part ore-forming possibility is less likely. In the known orebody region, 3 geoelectric cross sections have been arranged and shown that the fault controlled fluorite orebody basically corresponding to the low-resistivity anomalous zone. In the orebody magnetic anomalous region, according to correspondence between structural ore control caused mineralizing low-resistivity anomaly and combined profile orthogonal anomalous point, has inferred that on the 2 geoelectric cross sections in the Houchengzigou and Erdaoyingzibeigou have existed fluorite orebodies controlled by buried faults. So that should be paid attention to the area as a beneficial ore-forming region.

关 键 词：高精度磁测 联合剖面法 高密度电法 Δ T 场正异常 低阻异常 萤石矿 

分 类 号：P631[天文地球—地质矿产勘探]