A Metallogenic Model of the Sodic-Metasomatic Type Uranium Ore Deposit in the Jiling Area of Longshoushan, Gansu Province
详细信息
- 责任者：Zhao Ruyi (Research Institute NO.203 of Nuclear Industry ; Xianyang 712000 ; China) ; Chen Yunjie
- 刊名：Geology and Prospecting
- 出版年：2013
- 卷期：49(1)
- 关键词：铀矿 ; uranium ores ; 甘肃 ; Gansu Province
- 页码：p.67-74
- 图表：illus., 2 tables, 17 refs.
- 分类号：1001
- issnNo：ISSN0495-5331
- isbnNo：CN11-2043/P
摘要
The alkali-metasomatic type uranium deposit area is an important deposit type in the Longshoushan ore belt, Gansu Province. In this paper, taking the Jiling uranium ore deposit in the Longshoushan ore belt as an example, we present the deposit, ore-body characteristics and its geochemical features. The results show that the gas-rich sodic fluid from magma chamber burst out to form cryto-explosive breccia when migrating to low-pressure positions. Then the carbonic-uranium complex (4-) decomposed due to pressure decrease and unloaded mineral to form ores. The wall rocks underwent albitization, chloritization, carbonatation, hematitization, argillization, and silication. It is suggested that the sodic-metasomatic type uranium is essentially of cryto-explosive breccia type, and a breakthrough in ore search is expected upon the mineralization model of cryto-explosive breccia.
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