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高精度磁法测量在矽卡岩型铜锌矿床深部找矿预测中的应用——以大兴安岭南部浩布高铜锌矿床为例
- 王开虎|杨言辰|陈天文|蒋职权|陈佳德
- 作者单位：
- 中化地质矿山总局内蒙古地质勘查院|吉林大学地球科学学院|吉林大学地球科学学院|中化地质矿山总局内蒙古地质勘查院|赤峰山金红岭有色矿业有限责任公司
基金项目：
- 中化地质矿山总局化工地质科技项目（ZHDK202302）；中国地质调查局发展研究中心项目（中地调研合同〔2020〕第296号）
详细信息：
- 作者简介：
- 王开虎（1983—），男，高级工程师，从事矿产资源勘查及管理工作；E-mail：289101889@qq.com
- 通讯作者：
- 杨言辰（1965—），男，教授，博士，从事成矿预测研究工作；E-mail：yyc@jlu.edu.cn
- PDF下载
Application of high-precision magnetic survey in deep exploration prediction of skarn-type copper-zinc deposits—A case study of Haobugao Copper-Zinc Deposit in the southern Greater Khingan Range
- English Author：
- Inner Mongolia Geological Exploration Institute of China National Chemical Corporation Geological and Mining Administration|College of Earth Sciences,Jilin University|College of Earth Sciences,Jilin University|Inner Mongolia Geological Exploration Institute of China National Chemical Corporation Geological and Mining Administration|Chifeng Shanjin Hongling Nonferrous Mining Co.,Ltd.
- Unit：
- 摘要
- 在线预览
- 参考文献
摘要:
高精度磁法测量是矿产预测的重要手段之一，其结果包含丰富的浅源信息和深源信息，在推断隐伏地质构造方面效果良好。根据不同岩性的磁性特征，可以识别地质体的形态产状及空间分布特征，进而间接指导找矿。浩布高铜锌矿床位于大兴安岭南部黄岗—甘珠尔庙锡多金属成矿带，矿体主要赋存于二叠系大石寨组大理岩与粉砂质板岩层间滑动带的矽卡岩中，部分产于大理岩和隐伏黑云母花岗岩接触带的矽卡岩内，具有典型矽卡岩型矿床特征。通过对高精度磁测数据的精细地质构造解译，对比地质勘查结果，分析总结控矿构造的产状变化和成矿地质体的形态规模变化特征，确定控矿因素及找矿标志，对深部及外围的找矿方向进行评价，为探矿工程布置提供依据。
关键词:
高精度磁法测量；找矿方向；磁异常解译；矽卡岩型；浩布高铜锌矿床；大兴安岭南部;深部找矿
Abstract:
High-precision magnetic surveys are one of the key methods for mineral exploration.These surveys provide valuable information from both shallow and deep sources,and they are effective in inferring concealed geological structures.By identifying the magnetic characteristics of different lithologies,the morphology and spatial distribution of geological bodies can be discerned,which in turn guides mineral exploration indirectly.Haobugao Copper-Zinc Deposit is located in Huanggang-Ganzhuermiao tin polymetallic metallogenic belt in the southern Greater Khingan Range.The ore bodies are primarily hosted within the skarn in the sliding zone between Permian Dashizhai Formation marble and silty slate layers,with some hosted within the contact zone between marble and concealed biotite granite,displaying typical characteristics of skarn-type deposits.Through the detailed geological structure interpretation of high-precision magnetic survey data,combined with geological exploration results,the variations in the occurrences of ore-controlling structures and the morphology and scale of ore-forming geological bodies were analyzed and summarized.This helped identify ore-controlling factors and exploration indicators,assess exploration directions for deep and peripheral areas,and provide a basis for the layout of future exploration projects.
Keywords:
high-precision magnetic survey;exploration direction;magnetic anomaly interpretation;skarn-type;Haobugao Copper-Zinc Deposit;southern Greater Khingan Range;deep exploration
