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黄金科学技术 ›› 2017, Vol. 25 ›› Issue (3): 54-60.doi: 10.11872/j.issn.1005-2518.2017.03.054

• 专题报道 • 上一篇    下一篇

胶东三山岛北部海域金矿床蚀变矿物短波红外光谱特征及其对深部找矿的启示

宋英昕   

  1. 山东省地质科学研究院,山东  济南   250013
  • 收稿日期:2017-03-17 修回日期:2017-05-04 出版日期:2017-06-30 发布日期:2017-09-11
  • 作者简介:宋英昕(1989-),女,山东莱阳人,硕士研究生,从事岩石与矿物学研究工作。songying.xin2008@163.com
  • 基金资助:

    山东省泰山学者建设工程专项经费项目“胶东型金矿的构造岩浆背景和深部找矿关键技术”(编号:ts201511076)和国家重点研发计划“蚀变岩型金矿立体地球化学探测试验示范”(编号:2016YFC0600606)联合资助

Short Wave Infrared Spectral Characteristics of Alteration Minerals of Gold Deposit in the Northern Sea of Sanshandao and Its Implications for Deep Prospecting

SONG Yingxin   

  1. Shandong Geological Sciences Institute,Jinan    250013,Shandong,China
  • Received:2017-03-17 Revised:2017-05-04 Online:2017-06-30 Published:2017-09-11

摘要:

通过对三山岛北部海域金矿床矿化蚀变岩(矿)石的短波红外光谱进行测量,识别出10种蚀变矿物,即白云母(绢云母)、锂云母、伊利石、锂辉石、绿帘石、高岭石、角闪石、白云石、方解石和蒙脱石。其中,绢云母与金矿化的关系密切,金品位与绢云母的光谱学特征峰强度、峰强比和峰对称呈正相关关系,贫铝绢云母具有热源中心的指示意义。贫铝绢云母分布于钻孔深部,且向更深部仍有稳定分布的趋势,指示成矿热源深度较深,说明三山岛北部海域金矿床深部仍有较大找矿潜力。

关键词: 短波红外光谱技术, 三山岛北部海域金矿, 贫铝绢云母, 白云母Al-OH吸收峰位, 成矿热源, 深部找矿, 光谱特征

Abstract:

New superlarge gold deposit is found in the northern sea of Sanshandao,Shandong Province.The hydrothermal alteration minerals of orebody mainly include muscovite,lepidolite,ilite,spodumene,epidote,kaolinite,hornblende,dolomite,calcite and smectite,as identified by short wave infrared measurement.The muscovite has close relationship with gold mineralization.Gold grade has the positive correlation with peak intensity,contrast of intensity,symmetry of peak in short wave infrared spectrum.Aluminum-poor muscovite have the indicate significance of heat center.Aluminum-poor muscovite distribute in the deep drill.With the increase of depth,there have still stable trend of aluminum-poor muscovite distribution.This shows that the depth of metallogenic heat source is deeper,indicating that the depth of gold deposit has great potential for prospecting.

Key words: short wave infrared spectroscopy, gold deposit in the northern sea of Sanshandao, aluminum-poor muscovite, Al-OH absorption peak of muscovite, metallogemic heat source, deep prospecting, spectral characteristic

中图分类号: 

  • P618.51 

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