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辽西大红石砬子金矿床地质特征及找矿标志
- 孙通|张羽|赵明磊
- 作者单位：
- 辽宁省有色地质勘查总院有限责任公司|辽宁省有色地质勘查总院有限责任公司|辽宁省有色地质勘查总院有限责任公司
基金项目：
- 辽宁省省级地质勘查基金项目（辽国土资项〔2017〕34号）
详细信息：
- 作者简介：
- 孙通（1988—），男，吉林松原人，工程师，从事矿产地质勘查工作；沈阳市沈河区青年大街7号辽宁有色大厦27楼，辽宁省有色地质勘查总院有限责任公司，110013；E-mail:252147639@qq.com
- 通讯作者：
- isnull
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Geological characteristics and prospecting indicator of Dahongshilazi Gold Deposit in western Liaoning
- English Author：
- Liaoning Nonferrous Mining Geological Exploration Institute Co.,Ltd.|Liaoning Nonferrous Mining Geological Exploration Institute Co.,Ltd.| Liaoning Nonferrous Mining Geological Exploration Institute Co.,Ltd.
- Unit：
- 摘要
- 在线预览
- 参考文献
摘要:
大红石砬子金矿床为辽西地区新发现的隐爆角砾岩型金矿床。运用地、物、化综合勘查方法，结合探矿工程，发现了隐爆角砾岩体，即矿化蚀变带，并圈定了4条矿体。矿体受北东向断裂和环形断裂控制，均赋存在中侏罗统髫髻山组安山岩与下白垩统义县组流纹岩接触带的隐爆角砾岩体中。下白垩统义县组地层、隐爆角砾岩、北东向断裂与环状断裂和流纹斑岩脉，以及黄铁矿化、硅化、碳酸盐化等围岩蚀变为主要的地质找矿标志；Au-Ag-As-Pb-Zn-Cu-Sb-Mo土壤综合异常是地球化学找矿标志；低阻高极化特征为重要的地球物理找矿标志。4条矿体在走向和倾向上均未封闭，具有进一步找矿的潜力，通过开展综合地质找矿，矿床规模有望达到大中型。
关键词:
地质特征；找矿标志；找矿方向；隐爆角砾岩型金矿床；大红石砬子金矿床
Abstract:
The Dahongshilazi Gold Deposit is a newly discovered cryptoexplosive breccia type deposit in western Liaoning.Based on the comprehensive exploration method combining geological,geophysical and geochemical prospecting as well as exploration projects,the cryptoexplosive breccia body that is mineralization alteration zone is discovered and 4 ore bodies are delineated.The ore bodies are controlled by NE fault and ringed fault and hosted in the cryptoexplosive breccia on the contact zone of middle Jurassic Tiaojishan Formation andesite and lower cretaceous Yixian Formation rhyolite.The lower cretaceous Yixian Formation strata,cryptoexplosive breccia,NE fault and ringed fault,rhyolite porphyry,and such wall rock alteration as pyritization,silicification,and carbonatization are major prospecting indicators.Au-Ag-As-Pb-Zn-Cu-Sb-Mo comprehensive soil anomaly is the geochemical indicator; the characteristic of low resistance and high polarization is an important geophysical indicator.Four ore bodies are not sealed in strike or dip and bear potential for further prospecting.Via comprehensive geological prospecting,the deposit scale is expected to reach medium to large scale.
Keywords:
geological characteristics;prospecting indicator;prospecting direction;cryptoexplosive breccia gold deposit;Dahongshilazi Gold Deposit
