【摘要】 通过对牛角塘富镉锌矿的硫和铅同位素研究发现,该矿床同位素组成与其他含镉铅锌矿床明显不同,其硫同位素组成以富重硫为特征,δ34S值变化范围不大,集中在+22‰～+30‰;硫化物单矿物、矿石和乌训组地层岩石具有极其相近的铅同位素组成和高μ值(9.66～9.884)。表明该矿床的硫主要来源于寒武系地层硫酸盐或油田卤水,成矿物质铅主要来自铀钍相对富集的上部地壳岩石即清虚洞组白云岩(含矿地层)下伏地层乌训组页岩夹薄层灰岩,因此,牛角塘富镉锌矿成矿物质主要来源于上地壳即乌训组地层岩石,成矿时代为加里东运动的中晚期。更多还原

【Abstract】 Research on the S,Pb and Sr isotopes of Niujiaotang cadmium-rich zinc deposit revealed that the deposit was rich in （）³⁴S,with the variation range of S isotopic composition from （+22‰）⁺30‰. The Pb isotopic composition of sulfide monomineral and ore were similar to that of Wuxun Group rock indicating that the S of Niujiaotang deposit came from sulfate of Cambrian strata or oil-field brines,and the metallogenetic material-Pb from the cover rocks-Wuxun Group rocks which was relatively rich in U and Th. In conclusion,metallogenetic material of the deposit came from the shale and limestone of Wuxun Group,and the metallogenetic epoch was mid-late Caledonian period.更多还原