| 乌库尔其地区层间铀成矿过程中的流体作用研究 |
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| 引用本文：.2000.The role of fluids in the ore-forming process of the interlayer uranium deposits of Wukurqi district on the southern margin of Yili basin[J].Mineral Deposits,19(4):340~349 |
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| 基金项目:核工业西北地质局“新疆层间氧化带型砂岩铀矿床生产中的科研项目”（编号：D981602） |
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| 中文摘要:该文以伊犁盆地南缘乌库尔其地区各矿床为研究对象，阐述了层间氧化带砂岩型铀矿床层间铀成矿过程中的流体作用及伊犁盆地流体演化史对砂岩型铀成矿的控制等。试图通过稳定同位素、稀土元素等示踪方法研究该地区层间流体的来源、运移及向成矿流体的演化并成矿的流体作用机制，认为v22；旋回层间流体主要来自受大气水补给的基岩裂隙水，并且在层间流体流向上全岩氧同位素组成存在明显的变化规律。 |
| 中文关键词:层间流体作用 砂岩型铀矿 新疆乌库尔其 |
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| The role of fluids in the ore-forming process of the interlayer uranium deposits of Wukurqi district on the southern margin of Yili basin |
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| Abstract:Based on analyzing oxygen isotopic components in some fluids, REE distribution in rocks as well as geochemical behaviors of uranium and its associated elements in interlayer fluids, this paper holds that V22 interlayer fluids came mainly from bedrock fracture water derived from meteoric water. The paper elaborates the relationship between the development of Yili basin and the ore genesis in Viinterlayer sandy bodies and also describes the formation and evolution of fluids in the basin as well as characteristic features and ore-forming eftects of interlayer fluids. Water rock interaction is characterized by large quantrties of authigenic clay minerals, pyrite, secondary microlitic quartz and/or calcite. During the development of the interlayer oxidation zone, the interlayer water- rock interaction resulted in the formation of sandstone-type uranium deosits, and produced complete zoning of secondary minerals, with the ore in the reduction-oxidation transitional subzone, in the form of roll.δ18O values of total rock show a regular variation in the direction of interlayer fluids in V22; cyclothem, and the ore is appreciably abundant in REE. |
| keywords:uranium ore-forming process in interlayer sandstone, fluid interaction, sandstone-type uranium deposit, Wukurqidistrict, Xinjing, Yili basin |
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