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青海五龙沟金矿区蚀变矿物光谱特征与找矿应用

周轶群 胡道功

周轶群, 胡道功, 2012. 青海五龙沟金矿区蚀变矿物光谱特征与找矿应用. 地质力学学报, 18 (3): 331-338.
引用本文: 周轶群, 胡道功, 2012. 青海五龙沟金矿区蚀变矿物光谱特征与找矿应用. 地质力学学报, 18 (3): 331-338.
ZHOU Yi-qun, HU Dao-gong, 2012. SPECTRAL CHARACTERISTICS OF ALTERATION MINERALS AND ITS APPLICATION IN GOLD DEPOSIT PROSPECTING IN WULONGGOU, QINGHAI PROVINCE. Journal of Geomechanics, 18 (3): 331-338.
Citation: ZHOU Yi-qun, HU Dao-gong, 2012. SPECTRAL CHARACTERISTICS OF ALTERATION MINERALS AND ITS APPLICATION IN GOLD DEPOSIT PROSPECTING IN WULONGGOU, QINGHAI PROVINCE. Journal of Geomechanics, 18 (3): 331-338.

青海五龙沟金矿区蚀变矿物光谱特征与找矿应用

基金项目: 

中国地质调查局矿产资源评价专项"野外地质调查服务与管理系统研建与应用" 1212011120215

详细信息
    作者简介:

    周轶群(1987-), 女, 湖北襄阳人, 硕士研究生, 主要研究方向:第四纪地质及遥感信息技术应用。E-mail:ayumi541@163.com

  • 中图分类号: P627

SPECTRAL CHARACTERISTICS OF ALTERATION MINERALS AND ITS APPLICATION IN GOLD DEPOSIT PROSPECTING IN WULONGGOU, QINGHAI PROVINCE

  • 摘要: 使用近红外光谱仪对五龙沟金矿区主要蚀变矿物进行了光谱测试,获得该矿区主要蚀变矿物的光谱数据;同时选择部分具有代表性的样品进行详细的镜下鉴定,并将镜下鉴定结果与野外实测光谱曲线进行对比分析,检查其对五龙沟金矿体矿化蚀变快速检测的有效性和准确度。对比分析结果表明,蚀变分带与矿体吻合较好,对矿化分带具有较好的指示意义,也为该区的金矿勘探提供了依据。

     

  • 图  1  五龙沟金矿矿区地质简图(陆露,2011;据五龙沟金矿内部研究报告修编,2008)

    1—第四系风成砂;2—第四系冲洪积砂、砾石层;3—青白口系变火山岩组;4—青白口系丘吉东沟组;5—长城系小庙组上段;6—长城系小庙组下段;7—下元古代白沙河岩组;8—泥盆纪侵入岩-淡肉红色中粗粒黑云母钾长花岗岩;9—泥盆纪侵入岩-灰-浅灰色中粗粒二长花岗岩;10—晚志留纪侵入岩;11—晚志留纪-晚泥盆纪侵入岩;12—寒武纪侵入岩-浅灰中粗粒二长花岗岩;13—寒武纪侵入岩-浅灰黑云母花岗闪长岩;14—晚元古代侵入岩-浅灰中粗粒黑云母花岗闪长岩;15—晚元古代侵入岩-灰色中细粒石英闪长岩;16—肉红色中粒强蚀变钾长花岗岩;17—深灰绿色中粒硅化角闪辉长石;18—尖黑山单元:灰绿色透闪石化橄辉岩;19—二长花岗岩脉;20—黑云母花岗岩脉;21—石英脉;22—花岗岩脉;23—钾长花岗岩脉;24—闪长岩脉;25—辉绿玢岩脉;26—辉石闪长岩脉;27—闪长玢岩脉;28—石英闪长岩脉;29—岩脉;30—岩层产状;31—岩石片理产状;32—岩石片麻理产状;33—断层;34—韧性剪切带;35—地层界线;36—背斜轴迹;37—倒装向斜轴迹;38—向斜轴迹;39—小型金矿床位置;40—中型金矿床位置;41—大型金矿床位置;42—铜金属矿化位置点;43—多金属矿化位置点;44—金矿化点;45—铁矿化位置点;46—钼矿化位置点;47—多金属矿点;48—铅锌矿点位

    Figure  1.  Geological sketch map of WuLonggou gold deposit

    图  2  工作区地质简图

    Figure  2.  Geological sketch map of working area

    图  3  野外实测蚀变矿物频率直方图

    Figure  3.  Frequency histogram of measured alteration minerals in field by using PNIRS

    图  4  野外实测PNIRS光谱图与室内镜下照片对比

    Figure  4.  Contrasting sample graphics measured by PNIRS in field to the microscopic images

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  • 收稿日期:  2012-03-29
  • 刊出日期:  2012-09-28

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