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湖南浏阳—醴陵官庄地区金矿地质特征及控矿因素分析
Analysis of geological characteristics and ore-controlling factors of gold deposits in Liuyang-Liling Guanzhuang district of Hunan Province
【摘要】 浏阳—醴陵官庄地区金矿资源丰富,地质构造环境复杂。在资料系统收集和二次分析的基础上,通过开展大量的野外实地考察,系统总结区内主要金矿床矿体特征、矿石类型、矿化程度、围岩蚀变等特征,分析地层、岩浆岩及构造对区内金矿成矿的控制,总结区内金矿成矿规律。冷家溪群富含火山碎屑物质的浅变质岩系为区内金矿的矿源层,中酸性岩体/岩脉在空间上与成矿显示出一定的关系,近EW向和NE向两组次一级断裂构造控制矿体的具体产出。划分出近EW向成矿带和NE向成矿带,初步认为浏阳—醴陵官庄地区金矿的成因类型为造山型金矿床。
【Abstract】 There are abundant gold mineral resources in Liuyang-Liling Guanzhuang district for the geological tectonic environment is complex.On the basis of systematic data collection and secondary analysis,through some field investigations,this paper has systematically summarized the characteristics of orebodies,ore types,mineralization degree and surrounding rock alteration of the major gold deposits in the area.The orecontrolling effect of strata,magmatic rocks and structures on gold mineralization is analyzed,and the metallogenic regularity of gold deposits is summarized in the area.The shallow metamorphic rock series rich in pyroclastic materials in Lengjiaxi Group are the source stratum layer of gold deposits in the area.The intermediate acid rock mass and vein shows a certain relationship with mineralization in space,and the secondary fault structures of nearly EW and NE direction have controlled the occurrence of gold orebodies.There could be divided into nearly EW metallogenic belt and NE metallogenic belt in the area.It is preliminarily considered that the genetic type of gold deposits in research area belongs to the orogenic type of gold deposit.
【Key words】 orogenic gold deposit; geological feature; ore-controlling factor; metallogenic regularity; Liuyang-Liling Guanzhuang district;
- 【文献出处】 矿产与地质 ,Mineral Resources and Geology , 编辑部邮箱 ,2019年06期
- 【分类号】P618.51
- 【被引频次】2
- 【下载频次】103