石油与天然气地质 ›› 1991, Vol. 12 ›› Issue (2): 195-206.doi: 10.11743/ogg19910212

• 论文 • 上一篇    下一篇

大姚铜矿床有机质特征及其与成矿的关系

何明勤1, 冉崇英1, 刘卫华1, 刘德汉2   

  1. 1. 昆明工学院地质系;
    2. 中国科学院地球化学研究所, 广州
  • 收稿日期:1990-12-27 出版日期:1991-06-25 发布日期:2012-01-16
  • 基金项目:

    中国科学院有机地球化学开放实验室课题,编号:OGL-88-34.

CHARACTERISTICS OF ORGANIC MATTER AND ITS RELATION TO MINERALIZATION OF DAYAO COPPER DEPOSIT

He Mingqin1, Ran Chongying1, Liu Weihua1, Liu Dehan2   

  1. 1. Department of Geology, Kunming Institute of Technology;
    2. Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou
  • Received:1990-12-27 Online:1991-06-25 Published:2012-01-16

PDF (PC)

689

被引次数

31

摘要：

本文用岩石学和矿床地球化学方法,以及在有机质参与下的模拟实验,研究了有机质在成岩成矿各阶段的作用,对有机质可在一定的温度、压力和水介质条件下能够促成铜元素的活化、迁移、富集成矿等机理做了有益的探讨。

关键词: 铜矿, 成岩—改造型矿床, 矿床地球化学, 有机质, 模拟实验

Abstract:

The authors proposed that the Dayao copper deposit is of diagenesis reformation type based on mineral deposit geology, geochemistry and organic geochemistty. According to the research of the abundance, existence form, characteristics of organic matter under microscope and simulation experiment, the genesis relation between organic matter and copper mineral has been discovered. The roles of organic matter are not the same in different mineralization processes. It is characterised by organic matter adsorting copper during the formation of ore source beds, and bacterial reduction of sulfate and decomposition of organic matter to produce H2S etc. during the process of diagenetic mineralization, but in the process of reformation mineralization it showed reducing action of CH4 etc. which are produced by organic matter decomposition to SO42-.