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南岭中段黄沙铀矿区绿泥石成因及其与铀成矿关系

潘春蓉, 牟平, 钟福军, 黄广文, 李海东, 潘家永. 2020. 南岭中段黄沙铀矿区绿泥石成因及其与铀成矿关系[J]. 中国地质, 47(2): 348-361. doi: 10.12029/gc20200206
引用本文: 潘春蓉, 牟平, 钟福军, 黄广文, 李海东, 潘家永. 2020. 南岭中段黄沙铀矿区绿泥石成因及其与铀成矿关系[J]. 中国地质, 47(2): 348-361. doi: 10.12029/gc20200206
PAN Chunrong, MOU Ping, ZHONG Fujun, HUANG Guangwen, LI Haidong, PAN Jiayong. 2020. Genesis of chlorite in the Huangsha uranium deposit, middle part of Nanling Mountains and its relationship with uranium mineralization[J]. Geology in China, 47(2): 348-361. doi: 10.12029/gc20200206
Citation: PAN Chunrong, MOU Ping, ZHONG Fujun, HUANG Guangwen, LI Haidong, PAN Jiayong. 2020. Genesis of chlorite in the Huangsha uranium deposit, middle part of Nanling Mountains and its relationship with uranium mineralization[J]. Geology in China, 47(2): 348-361. doi: 10.12029/gc20200206

南岭中段黄沙铀矿区绿泥石成因及其与铀成矿关系

  • 基金项目:
    中国地质调查局项目(1212011085395)、国家自然基金项目(U1403292)和江西省研究生创新项目(YC2016-B074)联合资助
详细信息
    作者简介: 潘春蓉, 女, 1992年生, 硕士生, 主要从事铀矿地质科研工作; E-mail:184799613@qq.com
    通讯作者: 潘家永, 男, 1967年生, 博士, 教授, 主要从事铀矿床学教学与科研工作; E-mail:jypan@ecit.cn
  • 中图分类号: P595

Genesis of chlorite in the Huangsha uranium deposit, middle part of Nanling Mountains and its relationship with uranium mineralization

  • Fund Project: Supported by China Geological Survey Program (No. 1212011085395), National Nature Science Fund of China(No. U1403292) and the Innovation Project for Graduate Students of Jiangxi Province (No. YC2016-B074)
More Information
    Author Bio: PAN Chunrong, female, born in 1992, master candidate, mainly engages in the study of uranium geology; E-mail: 184799613@qq.com .
    Corresponding author: PAN Jiayong, male, born in 1967, professor, mainly engages in the teaching and study of uranium geology; E-mail: jypan@ecit.cn
  • 绿泥石化是南岭中段黄沙铀矿区中广泛发育的热液蚀变类型。在岩相学的基础上,通过电子探针分析技术研究了铀矿区内221、223铀矿床绿泥石的矿物共生组合类型与形貌特征,划分了绿泥石的化学类型,提出该矿区绿泥石的4种产出状态,探讨了绿泥石的形成温度和环境,讨论了绿泥石的形成机制及其与铀成矿的关系。研究结果显示该矿区绿泥石:(1)在形貌特征上,矿前期绿泥石主要呈黑云母假象或星点状、团块状产出,成矿期绿泥石主要呈脉状产出;(2)在成因类型上,绿泥石主要有黑云母蚀变型、长石蚀变型、裂隙充填型和与铀矿共生型4种类型;(3)绿泥石的形成温度为200~310℃,其中与铀矿物共生型绿泥石的平均形成温度为215℃,属于中低温热液矿床范围;(4)绿泥石主要形成于还原环境,形成机制主要有溶解-沉淀和溶解-迁移-沉淀两种。

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  • 图 1  黄沙铀矿区地质简图(底图据杜乐天,1982

    Figure 1. 

    图 2  黄沙铀矿区绿泥石镜下特征

    Figure 2. 

    图 3  黄沙铀矿区221、223铀矿床绿泥石分类图解(底图据Deer et al., 1962

    Figure 3. 

    图 4  黄沙铀矿区221、223铀矿床绿泥石原岩判别图解(据Laird, 1998

    Figure 4. 

    图 5  黄沙铀矿区221、223铀矿床绿泥石中离子的相关性图解

    Figure 5. 

    图 6  黄沙铀矿区221、223铀矿床绿泥石主要阳离子与镁的关系图解

    Figure 6. 

    表 1  黄沙铀矿区221、223铀矿床中绿泥石的电子探针化学成分(%)

    Table 1.  EPMA analyses of chlorite from No. 221, No. 223 uranium deposit in the Huangsha uranium ore district (%)

    下载: 导出CSV

    表 2  黄沙铀矿区221、223铀矿床绿泥石的电子探针特征值

    Table 2.  Characteristic values of electron microprobe analysis of chlorite from No. 221, No. 223 uranium deposit in the Huangsha uranium ore district

    下载: 导出CSV
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出版历程
收稿日期:  2018-01-07
修回日期:  2019-06-08
刊出日期:  2020-04-25

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