Zircon U-Pb Age, Tectonic Setting and Ore Potentiality of the Dafuzu (or Fucheng) Uranium-Bearing Rock Mass in the Southeastern Jiangxi Province
详细信息
- 责任者：Huang Fan (Key Laboratory of Metallogeny and Mineral Resource Assessment ; Ministry of Land and Resources ; Institute of Mineral Resources ; Chinese Academy of Geological Sciences ; Beijing 100037 ; China) ; Hou Kejun
- 刊名：Rock and Mineral Analysis
- 出版年：2012
- 卷期：31(3)
- 关键词：铀矿 ; uranium ores ; 铀—铅计时 ; U-Pb dating ; 江西 ; Jiangxi Province
- 页码：p.518-524
- 图表：1 tables, 26 refs.
- 分类号：1001
- issnNo：ISSN0254-5357
- isbnNo：CN11-2131/TD
摘要
The Dafuzu rock mass is located at the junction of Jiangxi province and Fujian province,and is closely related to uranium mineralization.In this paper,based on field surveys, the authors investigate the rock forming time of medium-coarse porphyritic biotite monzonitic granite and fine-grained biotite granite. Combining previous studies,Dafuzu granite rich in Al-rich minerals such as biotite and muscovite and characterized by relatively low SiO2 and high Al2O3,peraluminous (ACNK=1.12～1.36), suggest that the Dafuzu granite was probably formed in the syn-orogenic tectonic setting and may be derived from sedimentary rocks consisting of ancient crustal materials.In addition,the Dafuzu rock mass is characterized as having a high U and Th content with a leaching rate of mobile uranium and independent of micro-grained uraninites,suggesting a great uranium metallogenetic potential.
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