摘要
西藏洛隆县热昌金矿为近年来在那曲—洛隆弧前盆地新发现的贵金属矿点。运用地质、物化探等勘查手段,圈定35个单元素异常,5个综合异常带;发现8条金矿化体,矿(化)体金品位0.315×10^-6~1.75×10^-6,单样金品位最高达4.63×10^-6。通过对矿床地质及物化探特征进行综合分析,认为热昌金矿体赋存于花岗斑岩构造裂隙及与地层接触部位,受断裂及岩体控制。花岗斑岩西段深部存在低阻高激化的异常,地球化学异常Au、Cu、W等多元素套合性好,在花岗斑岩体边界及内部破碎带部位,矿化富集。热昌金矿的发现,为洛隆弧前盆地区域性找矿提供了积极的线索。
The Rechang gold deposit in Luolong County,Tibet,is a newly discovered precious metal deposit in the Naqu-luolong County pre-arc basin in recent years.Based on the comprehensive analysis of the geological and physicochemical characteristics of the orebody,it is concluded that the Rechang gold ore deposit is located in the structural fissure of granite porphyry and in contact with the strata,which is controlled by faults and rock masses.There is a low resistivity and high polarizability in the deep part of the Western segment of the Granite Porphyry,and the geochemistry anomaly has a good correlation of Au-Cu-W and other multi elements,and mineralization and enrichment are found at the boundary of granite porphyry and its internal fracture zone.The discovery of Rechang gold deposit has provided a positive clue for regional ore prospecting in Luolong pre-arc basin.
作者
廖诗进
岳国利
张诗启
廖帅北
蔡志超
常永伟
王亚珂
吕国娟
LIAO Shijin;YUE Guoli;ZHANG Shiqi;LIAO Shuaibei;CAI Zhichao;CHANG Yongwei;WANG Yake;Lü Guojuan(Henan Institute of Geological Survey,Zhengzhou 450001;Henan Key Laboratory of Metal Mineralization Geological Process and Resource Utilization,Zhengzhou 450001;Henan Geology Mineral College,Zhengzhou 451450;Institute of Geological Sciences,Henan Province,Zhengzhou 450001)
出处
《矿产勘查》
2020年第5期868-879,共12页
Mineral Exploration
基金
河南省地质矿产勘查开发局地质勘查项目(编号:豫地矿(2017)03号)资助。
关键词
金矿
斑岩型
物化探特征
热昌
西藏
gold deposit
porphyry type
geophysical and geochemical characteristics
Rechang
Tibet
