投稿时间：2013-11-27
修订日期：2015-01-29
网络发布日期：2015-07-02
中文摘要:文章对新疆蒙其古尔铀矿床成矿流体中的包裹体、酸解烃和镜质体反射率进行了分析研究。结果表明:该矿床的成矿流体主要为层间含氧含铀水和还原性烃类;石英裂隙中存在的流体包裹体主要是次生的富液盐水包裹体和液烃包裹体。测得流体包裹体的均一温度为50~67℃,平均66℃;w(NaCleq)为1.40%~14.04%,平均4.49%;成矿流体密度为0.98~1.04 g/cm3,平均1.01 g/cm3;说明成矿流体为低温低盐度流体,有机质热演化形成的甲烷等烃类参与了成矿过程。
Abstract:Based on the analysis of fliud inclusions, acidolysis hydrocarbon, and vitrinite reflectance, the authors studied the nature of the metallogenic fluid in the Mengqiguer uranium deposit. It is found that ore-forming fluid mainly includes water-bearing interlayer oxygen uranium and reducing hydrocarbons. There are many salty rich fluid inclusions and hydrocarbon inclusions existing in quartz cracks. Metallogenic process resulted from thermal evolution of organic matter of hydrocarbons such as methane and ethane which participated in the mineralization. Inclusion homogenization temperatures are in the range of 50~67℃, with an average of 66.2℃. Salinities vary in the range of 1.40%~14.04%, 14.04% on average. Densities of ore-forming fluid are in the range of 0.98 ~ 1.04 g/cm3, with an average of 1.01 g/cm3, suggesting that the ore-forming fluid is characterized by low temperature and low salinity, with the nature of atmospheric precipitation.
文章编号：
中图分类号：P619.14
文献标志码：
基金项目:本文得到 973项目"中国北方砂岩型铀成矿带陆相盆地沉积环境与大规模成矿"(编号: 2015CB453004)、国家"863"高技术研究发展计划 (编号: 2012AA061801)和中国核工业集团重点课题专项(编号: DZD162-1) 联合资助
引用文本：
修晓茜,刘红旭,张玉燕,所世鑫.2015.新疆蒙其古尔铀矿床成矿流体研究[J].矿床地质,34(3):488~496XIU XiaoQian,LIU HongXu,ZHANG YuYan,SUO ShiXin.2015.A study of ore-forming fluid in Mengqiguer uranium deposit, Xinjiang[J].Mineral Deposits34(3):488~496
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