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黄金科学技术 ›› 2017, Vol. 25 ›› Issue (3): 28-37.doi: 10.11872/j.issn.1005-2518.2017.03.028

• 专题报道 • 上一篇    下一篇

胶东磨山金矿床主要金属矿物的矿物学特征及矿床成因研究

徐忠华1,王福江1,周明岭 2*,白宜娜 1,赵成乐1,胡秉谦1   

  1. 1.山东省第六地质矿产勘查院,山东  威海   264209;
    2.山东省第五地质矿产勘查院,山东  泰安   271021
  • 收稿日期:2017-02-27 修回日期:2017-04-12 出版日期:2017-06-30 发布日期:2017-09-11
  • 通讯作者: 周明岭(1968-),男,山东招远人,研究员,从事矿产勘查和技术管理工作。lyzhouml@126.com
  • 作者简介:徐忠华(1969-),男,山东东营人,高级工程师,从事金矿勘查工作。XZH1884@163.com
  • 基金资助:

    山东省泰山学者建设工程专项经费“胶东型金矿的构造岩浆背景和深部找矿关键技术”(编号:ts201511076)资助

Study on the Mineralogical Characteristics of Main Metallic Minerals and Ore Genesis of Moshan Gold Deposit in Eastern Shandong

XU Zhonghua1,WANG Fujiang1,ZHOU Mingling2,BAI Yina1,ZHAO Chengle1,HU Bingqian1   

  1. 1.6th Geology & Mineral Resources Survey Institute,Shandong,Weihai    264209,Shandong,China;
    2.5th Geology & Mineral Resources Survey Institute,Shandong,Tai’an    271021,Shandong,China
  • Received:2017-02-27 Revised:2017-04-12 Online:2017-06-30 Published:2017-09-11

摘要:

磨山金矿床是产于鹊山岩体东北部受小规模断裂及裂隙控制的破碎带蚀变岩型金矿。利用显微矿相学对磨山金矿床的矿石特征、主要金属矿物特征及金矿物特征进行了系统研究,确定了矿石矿物共生组合和主要矿物的生成顺序,并划分为3个矿化阶段;认为胶东型金矿的矿物组合与造山型、浅成低温热液型等其他金矿床类型有明显差异,是一种独特的金矿床类型。磨山金矿床矿石中金矿物均为自然金,且大部分为粒径>0.037 mm的中粗粒金,偶见明金,金矿物成分、粒度与胶西北地区的蚀变岩型金矿有明显差异,由此指出磨山矿区赋矿岩石中空隙发育、矿区受早白垩世岩浆活动较高温的影响期长,是产生粗粒自然金的主要原因。

关键词: 金属矿物, 自然金, 矿化阶段, 矿床成因, 磨山金矿床

Abstract:

 Moshan gold deposit which was discovered in the northeastern of Queshan rock mass and controlled by the small-sized faults and fractures,belongs to fracuture zone alteration rock pattern gold deposit.According to the comprehensive analysis of ore characteristics,main metallic mineral characteristics and gold mineral characteristics,the mineral assemblage of ore and their formation order were determined and the formation of Moshan gold deposit was dividen into three mineralization stages.This paper holds the viewpoint that mineral assemblage of Jiaodong gold deposits are distinctly different from those of orogenic gold deposits and epithermal gold deposits,and they are a unique deposit type.The research shows that gold minerals of ore are native gold,and particle size of gold mainly varies between middle and coarse,visible gold is occasionally found,in addition,the mineral composition and particle size of gold mineral in eastern Shandong have obvious differences those in northwestern Shandon,fracture development in the host rock and the long term-influence of the early Cretaceous magmatism in mining area are the main cause of forming coarse gold.

Key words: metallic mineral, native gold, mineralization stage, ore genesis, Moshan gold deposit

中图分类号: 

  • P618.51

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