华南花岗岩型富铀矿体形成条件分析及成矿模式研究

华南地区是花岗岩型富铀矿产出的重点地区之一,通过总结该区多年铀矿地质找矿、科研成果,并结合近几年富铀矿的找矿成果,对华南花岗岩型富铀矿的铀源、构造岩浆条件、成矿物理化学条件等方面进行分析,并以该区典型的富铀矿床338、339、201、361等的统计及分析测试数据进行了佐证。对华南花岗岩型富铀矿体的形成机制进行归纳和总结,认为富铀矿体的形成是多种因素叠加,是富铀源体、构造—岩浆作用形成的富铀花岗岩体、铀的多次活化运移、有利的物理化学条件、构造有利部位、沉淀富集成矿等一系列作用的叠加、配合的结果。综合以上分析并结合实际情况认为该区具有较大的富矿找矿潜力和发展前景。

Analysis of the metallogenic conditions and model of the granite type uranium-rich orebody in southern China

The southern China is one of the key granite type uranium-rich deposit areas. The previous geological prospecting and research results for granite type uranium-rich deposits, especially recent prospecting achievements were summarized in the article. The metallogenic conditions was analyzed in aspects of uranium mineralization source, structural and magmatic activities, ore-forming physical and chemical conditions and illustrated by statistical analysis and analytical data of typical No.338, No.339, No.201, and No.361 uranium-rich deposits in this area. It is concluded that the formation of uranium-rich orebody is the jointly result of comprehensive factors, i.e., the uranium-rich granite formed by tectonic and magmatic process of uranium-enriched source body, t, multiple activation and migration of uranium, favorable physical and chemical conditions, favorable structural location and precipitation and enrichment of uranium. Based on the above analysis, it is predicted that there is a great prospecting potential for uranium-rich deposits in this region.