浙西北火山岩型铀矿床的成矿条件及成矿规律研究

INVESTIGATION ON THE MINERALIZATION CONDITION OF VOLCANIC URANIUM ORE DEPOSIT AND METALLOGENETIC REGULARITY IN THE NORTHWEST OF ZHEJIANG PROVINCE

本文根据广泛的野外调查研究和大量的分析统计数据,讨论了浙西北火山岩型铀矿床形成的地质条件和物理化学条件。重点探讨了劳村组、黄尖组和寿昌组的含铀性及岩性、岩相、构造和岩浆活动对成矿的控制作用。探讨了成矿溶液的成分、性质、温度和铀的迁移形式,以及成矿物质来源和成矿机理,并在此基础上总结出铀成矿的时空规律。

Based on the extensive field investigation and numerous analytical statistics, the author discusses the geologic and physical-chemical condition of the formation of the volcanic uranium ore deposit in the northwest of Zhejiang province, and expounds mineralization intensity of Laocun, Huangjian and Soucang groups, and controlling action of lithological properties, lithefacies, structure and magamatic activity. In addition, the composition, properties, temperature of the mineralizing solution and the migration form of the uranium, the origin of the mineral substance and metallogenetic mechanism are explored. On this basis, the author summarizes the time and space regularity of the uranium mineralization.