A Study on Existing Forms and Migration Process of Uranium at Shazhou Deposit, Jiangxi Province, China: Evidences from Induced Fission Tracks
详细信息
- 责任者：Zhang Yuyan (Key Laboratory of Uranium Resource Exploration and Evaluation Techniques ; Beijing Research Institute of Uranium Geology ; CNNC ; Beijing 100029 ; China) ; Li Ziying
- 刊名：Geological Journal of China Universities
- 出版年：2012
- 卷期：18(4)
- 关键词：铀矿 ; uranium ores ; 裂变径迹计时 ; fission-track dating ; 江西 ; Jiangxi Province
- 页码：p.639-646
- 图表：3 illus., 4 tables, 11 refs.
- 分类号：1001
- issnNo：ISSN1006-7493
- isbnNo：CN32-1440/P
摘要
Shazhou uranium deposit occurs in the porphyritic biotite monzonitic granite. Existing forms and distribution characteristics of uranium in the granitic wall rocks and the alteration process at the Shazhou deposit are studied by means of induced fission tracks in this paper. During hydrothermal alteration, uranium contents in major rock-forming minerals significantly decreased, and most uranium-bearing accessory minerals disappeared after metasomatism. Metasomatic alteration could move uranium out from granitic wall rocks to hydrothermal fluids, and the activated uranium could be at last concentrated nearby and in the fissures of the alterated minerals, or be adsorbed by the newly formed minerals. Metasomatic alteration changed the existing forms and caused migration and preliminary concentration of uranium, which would be favorable for uranium mineralization.
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