瑶坑地区金矿化特征分析及找矿方向

Feature analysis of gold mineralization and prospecting direction in Yaokeng area

文章介绍浙江开化瑶坑地区区域地质背景,系统阐述开化瑶坑地区出露地层、基本构造格架、主要的岩浆活动、金地球化学特征、金矿化特征。从Au地球化学异常分布来看,与北北东向的主断裂F 1基本吻合,沿F 1断裂带存在一条北北东向的金矿化蚀变带。从瑶坑金矿已知金矿床(点)特征进行分析,认为奥陶系下统印渚埠组粉砂质泥岩、含炭质泥岩、泥质粉砂岩为矿体形成提供了初始物质来源,岩浆活动、构造作用是区内金矿主要控矿要素,北东向挤压破碎带是主要赋矿构造,具备良好的金成矿地质条件,具有一定的找矿前景。

This paper introduced the regional geological background of the Yaokeng area in Kaihua,Zhejiang Province,and systematically expounded the exposed strata,basic structural framework,main magmatism,geochemistry features and gold mineralization features in the Yaokeng area in Kaihua.The geochemical anomaly distribution of AU is basically consistent with the main NNE fault F 1,and there is a NNE gold mineralization alteration belt along the F 1 fault zone.Based on the feature analysis of the known gold deposits(spots)in the Yaokeng gold deposit,it was considered that the silty mudstone,carbonaceous mudstone and argillaceous siltstone of Lower Ordovician of the Yinzhubu formation provided the initial material source for the formation of the ore body.Magmatism and tectonism were the main ore-controlling factors of gold deposits in the area,and the north-east compressional fracture zone was the main ore-bearing structure,which indicated good geological conditions for gold mineralization and certain prospecting prospects.