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黄金科学技术 ›› 2017, Vol. 25 ›› Issue (6): 31-42.doi: 10.11872/j.issn.1005-2518.2017.06.031

• 矿产勘查与资源评价 • 上一篇    下一篇

湖南康家湾金银多金属矿床金银赋存状态及其与成矿演化的关系

郑慕婷1,张术根1*,贺忠春2   

  1. 1.中南大学地球科学与信息物理学院,湖南  长沙   410083;
    2.湖南省有色地质勘查局二一七队,湖南  衡阳   421009
  • 收稿日期:2017-07-11 修回日期:2017-08-24 出版日期:2017-12-30 发布日期:2018-05-18
  • 通讯作者: 张术根(1958-),男,湖南湘阴人,教授,从事矿物学、地质找矿与成矿预测研究工作。zhangshugenzsg@163.com
  • 作者简介:郑慕婷(1993-),女,湖南永州人,硕士研究生,从事成因矿相学研究工作。276514219@qq.com

Occurrence of Gold and Silver and Their Relation to Metallogenic Evolution in Kangjiawan Au-Ag Polymetallic Deposit,Hunan Province

ZHENG Muting1,ZHANG Shugen1,HE Zhongchun2   

  1. 1.School of Geosciences and Info-physics Central South University,Changsha    410083,Hunan,China;
    2.Geological Exploration Bureau for Non-ferrous Metals,Hengyang    421009,Hunan,China
  • Received:2017-07-11 Revised:2017-08-24 Online:2017-12-30 Published:2018-05-18

摘要:

康家湾金银多金属矿床是水口山铅锌多金属矿田的重要代表性矿床,以金银矿化富集为突出特点。以矿相显微镜和电子探针研究为主要手段,探讨金银赋存状态及其与成矿演化的关系。研究表明,在该矿床经历的毒砂—黄铁矿—石英、金银铅锌硫化物和石英—方解石3个成矿阶段的热液成矿作用演化过程中,Au、Ag富集于金银铅锌硫化物阶段,金银除以类质同像进入黄铁矿和方铅矿晶格之外,金主要形成Au-Ag系列独立矿物,少量为Au-Ag-Te系列矿物,银除少量构成Au-Ag系列和Au-Ag-Te系列矿物之外,主要形成Ag-Cu-Zn-Fe-Sb-As-S系列矿物,此外还有Ag-Sb-S系列和Ag-Cu-Sb-As-S系列矿物。

关键词: 金银矿化富集, 成矿演化, 电子探针, 矿相学, 康家湾多金属矿床, 湖南省

Abstract:

As a representative of Shuikoushan lead-zinc polymetallic orefield,Au-Ag polymetallic deposit in Kangjiawan is characterized by Au-Ag ores concentrated.Analysis of how Au and Ag are reserved and how they are related to evolution of mineralization is conducted,by using petrographic microscope and EMPA.Three mineralization processes are figured out,which are,formed by hydrothermal solution,Arsenopyrite-pyrite-quartz stage,zinc-lead sulfide stage,and quartz-calcite,respectively.Concentration of Au and Ag occurred at the zinc-lead sulfide stage.Au exist independently as a form of Au-Ag ores,except some of which enter the crystal lattices of iron pyrite and galenite by isomorphism and few of which exist in the form of Au-Ag-Te ores.Ag mainly exists in the form of Ag-Cu-Zn-Fe-Sb-As-S ores,in addition there are Ag-Sb-S series and Ag-Cu-Sb-As-S series of minerals.

Key words:  mineralization enrichment of Au and Ag, metallogenic evolution, EPMA, mineralography, Kangjiawan polymetallic deposit, Hunan Province

中图分类号: 

  • P618.51 

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