基性岩地球化学特征及其与金矿的关系——以云南富宁者桑金矿为例

The Geochemical Characteristics of Basic Rocks and Their Relationship with Gold Deposit—Taking the Zhesang Gold Deposit in Funing, Yunnan as an Example

基性岩与金矿在时间、空间及成矿物质来源上关系十分密切。本文以云南富宁者桑金矿的基性岩为例,详细讨论了两期基性岩的成岩时间、成因机制、源区特征及构造演化等地球化学特征,并结合前人对者桑金矿的年龄测定、对岩矿石的主微量元素测定、及华南区域大地构造动力演化史,从年代学、地球化学、大地构造学等方面详细探讨基性岩与金矿的关系,并建立出华南地区卡林型金矿的成矿模型,为以后该类矿床的勘探研究工作提供详实的理论指导。

Basic rocks are closely related to gold deposits in terms of time, space, and ore-forming sources. This paper takes the basic rocks of the Zhesang gold deposit in Funing, Yunnan as an example, and discusses in detail the geochemical characteristics of the two phases of basic rocks such as the diagenesis time, genetic mechanism, source area characteristics, and structural evolution. Combined with the age determination of the Zhesang gold deposit by the predecessors, the determination of the main and trace elements of the rock ores, and the dynamic evolution history of the geotectonic in South China, from the aspects of geochronology, geochemistry and geotectonics, the relationship between basic rocks and gold deposits is discussed in detail. The mineralization model of Carlin-type gold deposits in the area provides detailed theoretical guidance for future exploration and research work of such deposits.