节点文献
成矿热液演化过程中大气降水加入的流体包裹体证据——以文峪金矿为例
FLUID INCLUSION EVIDENCE FOR METEORIC WATER INVOLVED IN HYDROTHERMAL FLUID EVOLUTION:TAKING WENYU GOLD DEPOSIT AS AN EXAMPLE
【摘要】 对文峪金矿530脉各成矿阶段石英中不同期次的流体包裹体进行了较为详细的显微观察和测温研究,在成矿作用的Ⅱ,Ⅲ阶段有大气降水的加入,其中Ⅱ阶段只有少量的大气降水加入,Ⅲ阶段有较多的大气降水加入;成矿流体从早到晚,从富CO2转变为以H2O为主。
【Abstract】 Fluid inclusions are investigated on quartzs of stage Ⅰ,Ⅱ,and Ⅲ from vein 530 of Wenyu mine.CO2H2O inclusions are dominant in both stage Ⅰ and Ⅱ vein quartzs whereas aqueous inclusions are dominant in stage Ⅲ vein quartzs.According to fluid inclusion microthermometry data,CO2H2O inclusions from stage Ⅰ through Ⅱ to Ⅲ indicate an evolving CO2H2ONaCl system.However,aqueous inclusions in stage Ⅲ vein quartzs are not the evolving result of CO2H2ONaCl system.Fluid inclusion data,combined with isotopic data,support that the aqueous inclusions are most likely derived from meteoric water.The oreforming fluids are CO2rich in the earlier stages and H2Orich in the latest stage.
【Key words】 oreforming fluid; meteoric water; fluid inclusions; Wenyu gold deposit.;
- 【文献出处】 地质科技情报 ,GEOLOGICAL SCIENCE AND TECHNOLOGY INFORMATION , 编辑部邮箱 ,1998年S1期
- 【分类号】P618.51,P314
- 【被引频次】1
- 【下载频次】134