| 巴音戈壁盆地塔木素地区流体改造与铀成矿 |
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| 引用本文： | 刘帅,张成勇,聂逢君,侯树仁,李建波.巴音戈壁盆地塔木素地区流体改造与铀成矿[J].铀矿地质,2017(4):199-205. |
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| 作者姓名： | 刘帅 张成勇 聂逢君 侯树仁 李建波 |
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| 作者单位： | 1. 东华理工大学地球科学学院,江西南昌,330013;2. 核工业208大队,内蒙古包头,014010 |
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| 基金项目： | 国家自然科学基金项目(41662006),核工业集团公司 "中国新生代铀成矿作用研究"项目资助 |
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| 摘 要： | 内蒙古巴音戈壁盆地塔木素地区的铀矿化与中国北方其他盆地的层间氧化带砂岩型和泥岩型铀矿化明显不同。在该地区的铀矿化岩石中,砂岩和泥岩几乎各占一半,并且出现不同类型的后期改造。笔者通过野外露头、岩心观察和室内微观分析,发现该地区的矿化岩石发育赤铁矿化、褐铁矿化、黄钾铁矾化、碳酸盐化、石膏化和绿泥石化等多种蚀变。在查明各蚀变带特征的基础上,讨论了巴音戈壁组上段蚀变带的期次及与铀矿化的关系。研究认为,以赤铁矿化、褐铁矿化、黄钾铁矾化为标志的红色、黄色岩石氧化作用发育时间较早,而碳酸盐化、石膏化和绿泥石化较晚;铀矿化分布受氧化作用控制,而灰绿色蚀变所代表的后期热流体叠加作用,使铀矿化进一步富集。
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| 关 键 词： | 塔木素地区 蚀变作用 铀矿化 后期叠加 |
Relationship of Fluid Transformation and Uranium Mineralization in Tamusu Area of Bayingobi Basin,Inner Mongolia |
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| LIU Shuai,ZHANG Chengyong,NIE Fengjun,HOU Shuren,LI Jianbo.Relationship of Fluid Transformation and Uranium Mineralization in Tamusu Area of Bayingobi Basin,Inner Mongolia[J].Uranium Geology,2017(4):199-205. |
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| Authors: | LIU Shuai ZHANG Chengyong NIE Fengjun HOU Shuren LI Jianbo |
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| Abstract: | Tamusu uranium deposit in Bayingebi basin is different to Yili interlayer oxidation zone sand-stone type uranium deposit and Nuheting mudstone type uranium deposit.In this deposit,sandstone and mudstone is almost half and half of the target layer and with widely alterations in ores.Through the field outcrop survey,core observation and microscopic analysis,the author found that alteration in this area include hematite, limonitization, carbonation, gypsum, chloritization.Based on the discussion of different alteration zones,the order of alteration zones in the upper member of Bayingobi formation and their relationship with uranium mineralization were summarized.It was found that the red and yellow ox-idation developed earlier than carbonation,gypsum and chloritization,and the distribution of uranium mineralization was controlled by oxidation,while the later hydrothermal fluid superposition represented by grayish green rock made the uranium mineralization richer. |
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| Keywords: | Tamusu area epigenetic alteration uranium mineralization later superposition |
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