戈枕断裂带(北段)中深部金矿化特征与找矿标志——以北牛金矿区为例  

Gold mineralization characteristics and prospecting criteria in the middle and deep part of Gezhen fault zone (North Section)--Take Beiniu gold mine area as an example

作　　者：陈文[1] 吴育章 张文彬 伍德明 CHEN Wen;WU Yu-zhang;ZHANG Wen-bin;WU De-ming(Marine Geological Survey Institute of Hainan Province,Haikou 570206,China)

机构地区：[1]海南省海洋地质调查研究院,海南海口570206

出　　处：《世界有色金属》2022年第12期69-71,共3页World Nonferrous Metals

摘　　要：戈枕断裂带(北段)已发现和开采的矿床大部分属于浅部矿,开采深度范围一般在地表往下200m,以致各种相关的戈枕断裂带研究主要集中在这深度范围内,而戈枕韧性剪切带的深度及戈枕村组含矿金源层的厚度均大于1000m,其中中深部(300m~500m)范围内金矿资源潜力究竟如何,金矿化特征和找矿标志怎么样,缺少有说服力的证据。北牛金矿区作为一个正在生产开采浅部矿的金矿区,考虑矿区后续中深部矿体发现和开采的需要,通过对矿区进行生产勘探,施工4个深度在400m~490m的钻孔。通过野外岩芯观察和样品试验分析以此说明戈枕断裂带(北段)中深部金矿化特征和找矿标志。Most of the deposits discovered and mined in Gezhen fault zone(North Section)belong to shallow deposits,and the mining depth range is generally 200m below the surface,so that various relevant studies on Gezhen fault zone are mainly concentrated in this depth range,while the depth of Gezhen ductile shear zone and the thickness of ore bearing gold source layer of Gezhen village group are more than 1000m,Among them,there is a lack of convincing evidence about the potential of gold resources in the middle and deep(300m~500m)and the characteristics of gold mineralization and prospecting indicators.Beiniu gold mine area is a gold mine area that is producing and mining shallow ore.considering the needs of subsequent discovery and mining of medium and deep ore bodies in the mining area,four boreholes with a depth of 400m~490m are constructed through production exploration in the mining area.Through field core observation and sample test analysis,this paper explains the characteristics of gold mineralization and prospecting signs in the middle and deep part of Gezhen fault zone(North Section).

关 键 词：戈枕断裂带(北段) 中深部 金矿化特征 找矿标志 北牛矿区 

分 类 号：P618.51[天文地球—矿床学]