水岩体系Eh-pH法及其在砂岩型铀矿体定位研究中的应用——以新疆伊犁盆地512铀矿床为例  

The Water-rock System Eh-pH Method and Its Application to Sandstone Type Uranium Orebody Position Research:──Exemplified by 512 Uranium Deposit, Yili Basin, Xinjiang

作　　者：张卫民[1] 刘金辉[1] 孙占学[1] 韦红钢[1] 

机构地区：[1]华东地质学院,江西抚州344000

出　　处：《华东地质学院学报》2002年第2期91-96,112,共7页Journal of East China Geological Institute

基　　金：核工业总公司资助项目 :"伊犁盆地砂岩型铀矿综合找矿技术方法研究" 编号Y561 0 91 8。

摘　　要：5 12铀矿床不同氧化还原环境水岩体系Eh和pH值的研究结果表明 :同一氧化还原环境的水岩体系Eh平均值极为接近 ;不同氧化还原环境的水岩体系Eh值差异明显 ,即从氧化带到还原带 ,水岩体系Eh值明显下降 ;不同氧化还原环境 ,其水岩体系 pH值也有所不同 ,氧化带和还原带处于弱碱性介质环境 ,过渡带 (矿化地段 )处于中性介质环境 ;水岩体系Eh和 pH值可以作为划分含矿层氧化还原环境分带及圈定铀矿体位置的依据。Studies on the water\|rock system Eh and pH values to the different oxidation\|reduction settings in 512 uranium deposit show that, the water\|rock system Eh mean values are very near to the identical oxidation\|reduction settings. The water\|rock system Eh values are of obvious difference to the different oxidation\|reduction settings, that is, from the oxidation zone to the reduction zone, the water\|rock system Eh values clearly decrease. The water\|rock system pH values have some difference to the different oxidation\|reduction settings, that is, the oxidation and zones are in the weakly alkali medium settings and then the transition zone(mineralized sector) is in the neutrality medium settings. The water\|rock system Eh and pH values can be regarded as the evidences to divide the oxidation\|reduction settings zonality and outline the uranium orebody position.

关 键 词：水岩体系Eh-pH法 砂岩型铀矿 铀矿体定位 氧化还原分带 伊犁盆地 

分 类 号：P619.1[天文地球—矿床学]