本文所研究的376铀矿床位于雪峰期M岩体的内外接触带中,成矿时代属加里东晚期。根据Rb—Sr,U—Pb和K—Ar同位素年龄以及氧、铅和硫稳定同位素资料,并结合矿区的地质特征,笔者认为:成矿溶液以大气降水来源为主;成矿物质主要来源于M岩体,部分来源于变质沉积岩;矿床的形成与加里东晚期变质作用有着密切的成因上的联系。 The 376 uranium deposit studied in this paper is located in the inner and outer contact zones of M rock mass in the Xuefeng period, belonging to the late Caledonian. According to the age of Rb-Sr, U-Pb and K-Ar isotopes, and the oxygen, lead and sulfur stable isotope data, combined with the geological characteristics of the mining area, the author thinks that the ore-forming solution is mainly derived from the sources of atmospheric precipitation; M rock mass comes from metamorphic sedimentary rocks. The formation of the ore deposit is closely related to the later Caledonian metamorphism.