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金属矿山 ›› 2013, Vol. 42 ›› Issue (03): 108-110+115.

• 地质与测量 • 上一篇    下一篇

多不杂铜矿床包裹体气液相成分分析

何阳阳1,2,温春齐1,刘显凡1,王康明2,霍艳1   

  1. 1.成都理工大学地球科学学院;2.四川省地质矿产勘查开发局402地质队
  • 出版日期:2013-03-15 发布日期:2013-04-16
  • 基金资助:

    * 国土资源部公益性行业科研专项(编号:201011013),矿物学岩石学矿床学国家重点(培育)学科建设项目(编号:SZD0407)。

Analysis on the Gas and Liquid Ingredients of Inclusions from Duobuza Copper Deposit

He Yangyang1,2,Wen Chunqi1,Liu Xianfan1,Wang Kangming2,Huo Yan1   

  1. 1.Geosciences College,Chengdu University of Technology;2.No.402 Geological Team of Sichuan Bureau of Geology and Mineral Exploration and Development
  • Online:2013-03-15 Published:2013-04-16

摘要: 对多不杂铜矿床矿物包裹体进行气液相成分分析,研究表明:包裹体气相成分以H2O和CO2为主,代表了一种氧化环境;液相成分主要为Cl-和Na+,流体中含有大量的石盐子晶,说明其具有高盐度的特点;热液期各阶段流体呈弱酸性,随着成矿过程的进行,氧逸度、二氧化碳逸度和硫逸度在逐步降低,pH值和Eh值在逐步升高;成矿作用主要发生在高温、高盐度、浅成、弱酸性以及氧化环境中。

关键词: 包裹体, 气液相成分, 多不杂铜矿床, 西藏

Abstract: Analysis study on the gas and liquid ingredients of mineral inclusions from the Duobuza Copper Deposit have shown that the gas phase composition of the inclusions are mainly H2O and CO2,on behalf of an oxidizing environment; liquid phase mainly composed of Cl- and Na+,and the fluid contains a large number of halite daughter crystals with the characteristics of high salinity.Fluid is slightly acidic at hydrothermal stage.With the conduct of the mineralization process,oxygen fugacity,carbon dioxide fugacity and sulfur fugacity gradually reduced;the pH value and Eh values gradually increased.Mineralization occurs mainly in the high-temperature,high salinity,shallow,slightly acidic and oxidizing environment.

Key words: Inclusion, Gas and liquid ingredients, Duobuza copper deposit, Tibet