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内蒙浩尧尔忽洞金矿流体包裹体和矿床成因研究

王得权 王建国 王义忠 刘建朝 张海东

王得权, 王建国, 王义忠, 等, 2015. 内蒙浩尧尔忽洞金矿流体包裹体和矿床成因研究. 地质力学学报, 21 (4): 517-526.
引用本文: 王得权, 王建国, 王义忠, 等, 2015. 内蒙浩尧尔忽洞金矿流体包裹体和矿床成因研究. 地质力学学报, 21 (4): 517-526.
WANG De-quan, WANG JIAN-GUO, WANG YI-ZHONG, et al., 2015. STUDY ON FLUID INCLUSIONS AND GENETIC TYPE OF HAOYAOERHUDONG GOLD DEPOSIT, INNER MONGOLIA. Journal of Geomechanics, 21 (4): 517-526.
Citation: WANG De-quan, WANG JIAN-GUO, WANG YI-ZHONG, et al., 2015. STUDY ON FLUID INCLUSIONS AND GENETIC TYPE OF HAOYAOERHUDONG GOLD DEPOSIT, INNER MONGOLIA. Journal of Geomechanics, 21 (4): 517-526.

内蒙浩尧尔忽洞金矿流体包裹体和矿床成因研究

基金项目: 

国家自然科学基金项目 41040020

中陕核工业集团公司科技创新项目"黄泥坪、秋树坪地区金成矿规律与成矿预测研究 61150101

详细信息
    作者简介:

    王得权(1981-),男,汉族,陕西省西安市人,博士,现从事固体矿产勘查工作。E-mail:wdq0013@163.com

  • 中图分类号: P597+.3

STUDY ON FLUID INCLUSIONS AND GENETIC TYPE OF HAOYAOERHUDONG GOLD DEPOSIT, INNER MONGOLIA

  • 摘要: 内蒙浩尧尔忽洞金矿中比鲁特岩组一、二岩性段是主要的赋矿层位,岩石类型有炭质变粉砂岩、粉砂质板岩、炭质板岩和千枚岩等。该组中Au含量是地壳丰度值的7.14倍,且碳含量较高,介于1%~7%之间。矿化过程分为4个阶段:早期石英脉阶段包裹体均一温度245.2~323.3℃,石英-黄铁矿阶段均一温度为236.9~317.5℃,石英-多金属硫化物阶段均一温度231.7~324.5℃,石英-碳酸盐阶段均一温度187.6~312.9℃。激光拉曼显微探针分析结果显示,气液两相包裹体中液相成分主要为H2O,含少量CO2;气相成分主要为CO2,含少量的CH4和N2。氢、氧同位素特征表明成矿流体与岩浆热液关系密切。气相成分中大量有机成分可能是岩浆上侵促使地层中有机质发生热降解而生成的。矿床类型属于黑色岩系型金矿,与中亚成矿带的黑色岩系型金矿具有很高的可比性。

     

  • 图  1  浩尧尔忽洞金矿矿区地质图

    Figure  1.  Generalized geologic map of the Haoyaoerhudong Gold Deposit

    图  2  浩尧尔忽洞金矿矿体分布

    Figure  2.  Ore body distribution of Haoyaoerhudong gold deposit

    图  3  浩尧尔忽洞金矿矿石特征

    a—矿石含揉皱状石英脉矿石;b—矿石含黄铁矿脉;c—它形方铅矿、黄铁矿(光片);d—炭质板岩(光片);e—石榴子石片岩(薄片);f—绢云母红柱石片岩(薄片)

    Figure  3.  The characteristics of ore in Haoyaoerhudong gold deposit

    图  4  包裹体显微照片

    a—纯液相包裹体;b—纯气相包裹体;c—CO2三相包裹体;d—长条状气液两相包裹体;e—近椭圆形气液两相包裹体;f—弯月形气液两相包裹体

    Figure  4.  The microscope photos of fluid inclusion

    图  5  浩尧尔忽洞金矿流体包裹体激光拉曼图谱

    Figure  5.  Laser Raman spectra of fluid inclusions of Haoyaoerhudong gold deposit

    表  1  浩尧尔忽洞金矿流体包裹体显微测温结果

    Table  1.   Microthemometric data of fluid inclusions of Haoyaoerhudong gold deposit

    样品编号 寄主矿物 数量 均一温度/℃ 冰点/℃ 盐度/% 流体密度/(g·cm-3) 成矿阶段
    hr007-3 石英 18 245.2~323.3 -5.8~-9.2 10.58~16.59 0.78~0.92 早期石英脉阶段
    hr007-5 石英 12 236.9~317.5 -7.6~-11.2 14.00~21.29 0.84~0.91 石英-黄铁矿阶段
    hr007-4 石英 21 231.7~324.5 -5.8~-8.7 10.58~15.80 0.75~0.93 石英-硫化物阶段
    hr007-13 石英 24 187.6~312.9 -3.9~-7.5 7.04~13.84 0.79~0.97 石英-方解石阶段
    下载: 导出CSV
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  • 收稿日期:  2015-04-07
  • 刊出日期:  2015-04-01

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