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哈图金矿深部构造-地球化学特征及隐伏矿体预测

地里夏提·买买提 卡衣沙尔·饿热斯 王勇 白玉秀 王俊林 王人可 刘波 林彩香

地里夏提·买买提, 卡衣沙尔·饿热斯, 王勇, 等, 2019. 哈图金矿深部构造-地球化学特征及隐伏矿体预测. 地质力学学报, 25 (1): 52-60. DOI: 10.12090/j.issn.1006-6616.2019.25.01.006
引用本文: 地里夏提·买买提, 卡衣沙尔·饿热斯, 王勇, 等, 2019. 哈图金矿深部构造-地球化学特征及隐伏矿体预测. 地质力学学报, 25 (1): 52-60. DOI: 10.12090/j.issn.1006-6616.2019.25.01.006
Dilixiati·MAIMAITI, Kayishaer·ERESI, WANG Yong, et al., 2019. DEEP STRUCTURAL-GEOCHEMICAL CHARACTERISTICS AND BURIED ORE-BODY PREDICTION IN THE HATU GOLD DEPOSIT. Journal of Geomechanics, 25 (1): 52-60. DOI: 10.12090/j.issn.1006-6616.2019.25.01.006
Citation: Dilixiati·MAIMAITI, Kayishaer·ERESI, WANG Yong, et al., 2019. DEEP STRUCTURAL-GEOCHEMICAL CHARACTERISTICS AND BURIED ORE-BODY PREDICTION IN THE HATU GOLD DEPOSIT. Journal of Geomechanics, 25 (1): 52-60. DOI: 10.12090/j.issn.1006-6616.2019.25.01.006

哈图金矿深部构造-地球化学特征及隐伏矿体预测

doi: 10.12090/j.issn.1006-6616.2019.25.01.006
基金项目: 

国家自然科学基金项目 U1503191

详细信息
    作者简介:

    地里夏提·买买提(1960-), 男, 博士, 副教授, 主要从事矿床学研究和教学工作。E-mail:dilixiati@xju.edu.cn

  • 中图分类号: P613;P612

DEEP STRUCTURAL-GEOCHEMICAL CHARACTERISTICS AND BURIED ORE-BODY PREDICTION IN THE HATU GOLD DEPOSIT

  • 摘要: 对哈图金矿区地表及深处矿体和围岩系统进行取样,通过石英包裹体和氧同位素研究,认为该矿是造山型中—低温混合热液金矿床。含矿断裂产状统计结果显示:浅部含矿构造产状变化范围较大,数量波动明显,岩石以脆性变形为主,在扭应力作用下,形成较多的张裂隙,呈尖灭再现的雁列式分布;深部断裂数量显著减少,产状变化范围缩窄,由于岩石围压增大,脆性变形向塑性转变,张裂隙不发育,石英脉型矿石变成石英细脉+蚀变岩型或蚀变岩型。分析成矿成晕指示元素Hg、Au、Ni、Pb、As、Sb、Cu、W、Zn、Ag、Mo、Bi含量的空间变化发现,地球化学原生晕受含矿构造尖灭再现的影响,存在前缘晕和尾晕的叠加结构,并且已知矿脉群的下部以尾晕元素组合为主,虽有前缘晕元素Sb与As的异常,但规模和强度较小。结合含矿断裂数量和规模向下衰减的特点,推测深部可能仍有隐伏矿体,但规模不大。

     

  • 图  1  区域断裂构造示意图(据文献[10]修改)

    1—第四纪沉积物;2—吐谷鲁群砂岩;3—齐古组砂岩、泥岩;4—太勒古拉组下亚组凝灰岩;5—太勒古拉组凝灰岩;6—包古图组泥质硅质粉砂岩;7—希贝库拉斯组砂岩;8—库鲁木迪组凝灰质粉砂岩、砂岩;9—花岗岩;10—大断裂;11—断裂;12—哈图金矿研究区

    Figure  1.  Sketch map of regional fault structure (modified after reference [10])

    图  2  哈图金矿矿脉地质图(据文献[10]修改)

    1—玄武岩;2—凝灰岩;3—第四纪沉积物;4—辉绿岩、辉长岩;5—硅质岩;6—下石炭统包古图组;7—凝灰质泥岩、砂岩;8—断裂;9—矿脉;10—哈图断裂带

    Figure  2.  Geological map of the Hatu gold vein(modified after reference [10])

    图  3  矿区含矿断裂构造特征

    a—断裂倾向极点图;b—断裂倾向玫瑰图;c—断裂走向玫瑰图

    Figure  3.  Fracture structural characteristics of the mining area

    图  4  追踪两组扭裂隙而成的张性断裂(内充含金石英脉,据文献[10]修改);

    1—玄武岩;2—凝灰岩;3—凝灰质泥岩;4—泥岩夹少量凝灰岩;5—辉绿岩;6—矿脉; 7—σ为应力

    Figure  4.  Tracing of extension fracture caused by two groups of twisted fissures (Inside filled with auriferous quartz vein, modifed after reference [10])

    图  5  哈图金矿深部27号脉支脉分布特征图(据文献[10]修改)

    1—凝灰岩;2—泥岩夹少量凝灰岩;3—玄武岩;4—火山角砾岩;5—凝灰质泥岩;6—矿脉

    Figure  5.  The distribution characteristics of the branches of the No.27 vein in the deep Hatu gold mine (modified after reference [10])

    图  6  中段矿脉玫瑰花图及极点等密图

    Figure  6.  Rose diagram of the middle section of the ore vein and the density contours of the pole

    图  7  元素组合叠加纵投影图

    Figure  7.  The element combination superposition vetical projection

    图  8  哈图金矿原生晕轴向叠加的地球化学参数图

    1—凝灰岩;2—凝灰质泥岩;3—玄武岩;4—矿脉

    Figure  8.  Geochemical parameters map of the axial superposition of primary halo in the Hatu gold mine

    表  1  哈图金矿各中段原生晕指示元素含量(均值)

    Table  1.   Indicator elements contents (mean) of primary halo in each middle section of the Hatu gold deposit

    中段/m 样品数 哈图金矿各中段原生晕指示元素含量/(×10-6)
    Hg Au Ni Pb As Sb Cu W Zn Ag Mo Bi
    893 17 173 81730 61.52 11.19 4713.26 39.85 119.72 14.62 72.81 0.82 0.52 0.18
    853 13 115 9550 46.86 5.93 8857.25 44.45 69.26 14.52 60.05 0.30 0.51 0.12
    813 18 79.75 5742 53.50 4.81 7132.56 26.74 86.42 11.81 56.06 0.30 0.32 0.07
    773 15 120 6420 59.46 9.55 7559.40 43.69 93.37 14.55 64.99 0.40 0.57 0.08
    725 17 309 16149 28.60 6.53 7434.29 36.54 69.74 10.39 50.60 0.52 0.30 0.08
    675 15 77.4 13614 63.83 5.27 12806.60 54.28 93.57 18.59 56.89 0.74 0.62 0.10
    625 15 65.65 5216 64.89 3.89 5176.73 35.89 97.79 12.24 62.15 0.30 0.39 0.09
    575 8 37.97 6137 79.65 4.58 2318.09 23.65 117.10 16.79 69.34 0.32 0.31 0.08
    525 4 60.9 18114 73.06 3.67 3883.00 27.66 112.33 11.54 62.81 0.55 0.21 0.11
    475 10 38.2 6542 62.70 4.33 5188.00 39.83 69.95 12.91 45.48 0.26 0.24 0.18
    注:表中Hg、Au的含量为10-9
    下载: 导出CSV
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  • 收稿日期:  2018-06-21
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