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Application of Geochemical Model in the Prediction of Sandstone-Type Uranium Deposits in Eastern Erlian Basin
Author(s): 
Pages: 24-30,46
Year: Issue:  1
Journal: Uranium Geology

Keyword:  二连盆地砂岩型铀矿床地球化学模式成矿水文地球化学机理;
Abstract: 文章采用PHREEQC模式程序,对研究区地下水的水文地球化学环境进行了模拟,确定水中铀的存在形式、水中沥青铀矿饱和指数(SI)和反应条件指数(RCI)等水文地球化学参数;分析了地层中铀所处状态与水中Eh值、pH值、铀浓度的关系;证明了水的Eh值是控制铀成矿作用的最主要因素;对砂岩型铀矿床的形成及其定位的水文地球化学条件进行了较系统研究和探讨;对砂岩型铀矿成矿水文地球化学机理进行了论证和计算;阐述了铀活化迁移、沉淀富集的本质规律;也为水文地球化学方法研究砂岩型铀矿的成矿预测和矿床定位提供了重要依据.
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