胶东栖霞大霞址断裂南段金矿地质特征及成因研究

Geological Characteristics and Origin of Gold Deposit in the Southern Section of Daxiazhi Fault in Qixia City in Jiaodong Area

摘要:

近年来胶东栖霞大霞址断裂南段发现了多个金矿床。文章从蚀变带特征、矿体空间展布特征等方面阐述了研究区金矿地质特征；从地层、岩浆岩、构造“三位一体”分析总结了控矿因素；通过与典型矿床的分析对比，认为该区金矿床类型属于构造蚀变岩型，金矿与硅化、绢英岩化、黄铁矿化关系最为密切；结合对成矿物质来源、成矿流体运移、沉淀、富集等的认识，对大霞址断裂金矿的成因进行了总结，建立了成矿模式，提出了下一步找矿建议。

Abstract:

In recent years, several gold deposits have been discovered in the southern segment of the fault in Daxiazhi fault in Qixia in Jiaodong area. In this paper, geological characteristics of gold deposits in the study area have been described from the characteristics of alteration zone and the spatial distribution of ore bodies according to the results of exploration work for many years. The ore-controlling factors are analyzed and summarized from the trinity of strata, magmatic rocks and structures. Through analysis and comparison with typical deposits, it is concluded that gold deposits in this area belong to structural alteration rock type, and the gold deposits are most closely related to silicification, sericitization and pyritization. Based on the understanding of the source of ore-forming materials, migration, precipitation and enrichment of ore-forming fluid, the origin of gold deposit in Daxiazhi fault has been summarized, metallogenic model has been established, and some suggestions for further prospecting have been put forward.