摘要
本文利用时间序列法并首次利用矿物学填图方法研究了石英DCO2和DH2O在乳山金矿的时空演变特征。论述了石英DCO2和DH2O在该金矿两期成矿方案划分中的作用，揭示了石英DH2O与流体包裹体均一温度有一定的负变关系。探讨了石英DCO2和DH2O的找矿标志意义，提出了“贫中找富”的新思路。
The relatlve optical densitles of CO2 and H2O in quartz have been studied, revealing that DH2O forms two decreasing cycles and DCO2 forms two low-high-low evolution cycles in the whole oreforming process. This provides strong evidence for the division of two metallogenic periods. The negative correlation between DH2O and Th of fluid inclusions in quartz is worked out. The significance of DCO2 and DH2O as prospecting criteria for gold is also discussed, and a new idea is put forward on rich ore prospecting in a poorly mineralized region.
出处
《矿物学报》
CAS
CSCD
北大核心
1995年第1期97-103,共7页
Acta Mineralogica Sinica
基金
地质矿产部科技司资助
关键词
石英
光密度
找矿标志
金矿床
水
二氧化碳
gold deposit
quartz
optical density
genesis of ore deposit
prospecting criteria
