景德镇朱溪钨铜多金属矿床岩浆岩地球化学特征及其对成矿的约束

景德镇朱溪钨铜多金属矿床是近年在赣东北地区发现的一个超大型矽卡岩矿床。在对该矿床成矿地质背景及地质特征已有认识的基础上,本文通过对钻孔揭露出的岩浆岩及矽卡岩型矿石进行微量-稀土元素地球化学分析,结合岩浆岩含矿性、矿化分带性及已有成岩-成矿年代学数据,初步分析了岩浆岩的地球化学特征及其对成矿作用的制约。结果表明岩浆岩与成矿有密切的成因联系,朱溪钨铜多金属矿床的形成可能主要受华南中生代岩石圈多阶段伸展-减薄而形成的一系列地壳重熔型花岗质岩石控制。

Geochemical characteristics of magmatite and their constraints on mineralization of the Zhuxi tungsten-copper polymetallic deposit in Jingdezhen, Jiangxi Province

Abstract: The Zhuxi tungsten?copper deposit, discovered in northern Jiangxi in recent years, is a potential superlarge skarn deposit. Based on the geological setting and geological features of the ore deposit, the authors analyzed the rare earth and trace elements of the magmatite and skarn ores in the drill holes. Combined with the ore-bearing properties of the granitoid, the mineralization zoning, and the pre-existing geochronological data, this paper preliminarily discusses the geochemical characteristics of the granite and their constraints on mineralization of the Zhuxi tungsten-copper deposit. It is suggested that the granite is closely related to metallogenesis, and the mineralization of Zhuxi tungsten?copper polymetallic deposit is controlled by the crustal remelting granite which may have resulted from the large?scale lithospheric extension of southern China during the Mesozoic.