吉林溜河金矿床石英的标型特征在找矿预测中的应用

TYPOMORPHIC CHARACTERISTICS OF QUARTZ FROM LIUHE GOLD DEPOSIT IN JILIN PROVINCE: Application in Ore Prediction

应用石英的标型特征对吉林溜河金矿石英的含金性进行了初步的定量分析,结果表明该区不含金石英脉中石英晶胞参数明显比含金石英脉中石英晶胞参数小.含金石英脉中石英微量元素特征是:有一定铝碱含量,含较多铁,少量钡,而Co、Cr、Rb、Cs、Sc、Ta等平均含量低于矿区背景值,出现明显的亏损.含金石英包裹体的H2O和CO2含量明显比不含金石英包裹体的H2O和CO2含量偏高.根据上述石英的标型特征研究成果,再结合构造控矿规律、地球化学研究信息,对吉林溜河金矿区进行了矿区深部成矿预测.

The gold content of quartz from Liuhe gold deposit in Jilin Province is quantitatively analyzed with the typomorphic characteristics of quartz.The result shows that the cell parameters of quartz from the Au-free vein are apparently smaller than those from the Au-bearing vein.The trace elements in the quartz from Au-bearing vein are characterized by certain Al-alkaline content,much Fe,less Ba,and lower average contents of Co,Cr,Rb,Cs,Sc and Ta than the background value of the orefield.The H2O and CO2 contents in the inclusion of Au-bearing quartz are evidently higher than those of Au-free quartz.Based on such analysis,with study on the structure-controlling law and geochemistry of the deposit,a prediction for the mineralization in the deep of the orefield is carried out.