豫西栾川县潭玉沟矿区S101银矿床地球化学特征与深部找矿

在前期勘查工作的基础上,选择13、07、08三条勘探线,利用已有的钻探工程进行岩石地球化学剖面测量。微量元素含量特征显示,矿脉内Ag、Pb、W、Zn、Sb、As六种元素活动性强,分异程度高,利于元素的富集成矿;Au、Bi、Mn、Cu、Sn、Mo、Hg七种元素活动性较弱,分异程度低,不利于成矿,由此说明S101矿脉是以Ag、Pb为主的多金属矿床,找Au前景不佳。以元素含量均值为异常下限值,并以1倍或2倍的标准离差为级差圈定元素异常。根据元素间的相关性及矿床特征,选取As、Sb、Hg及Mo、W、Sn分别编绘组合异常,从组合异常的空间分布,判断成矿空间的相对位置,指出进一步找矿方向。初步研究结果表明,S101矿床深部找矿潜力自西向东逐渐向好,下一步应以08勘探线及邻近区域为深部找矿的重点部位。

Geochemical characteristics and deep prospecting of S101 silver deposit in Tanyugou mining area,Luanchuan County,western Henan Province

On the basis of the previous explortion work,three of No.13,No.07 and No.08 exploration lines were selected,and the existing drill holes was used to carry out the geochemical rock survey.The trace element content shows that the six elements of Ag,Pb,W,Zn,Sb and As in the vein have strong activity and high degree of differentiation,which is conducive to the integration of elements;Au,Bi,Mn,Cu,Sn,Mo and Hg have weak activity and low degree of differentiation,which is not conducive to mineralization.This indicates that the S101 vein is a Ag and Pb polymetallic deposit,and the prospect of exploration of Au is not good.The average element content is the anomaly lower limit,and the elemental zoning is determined by the standard deviation of 1 time or 2 times.According to the correlation between elements and the characteristics of deposits,As,Sb,Hg and Mo,W,and Sn are selected to record the combined anomalies respectively.From the spatial distribution of the combined anomalies,the relative positions of the ore-forming space are judged,and the direction of deep prospecting is pointed out.The preliminary research results show that the deep prospecting potential of the S101 deposit is gradually improving from west to east.The important parts for deep prospecting is the No.08 exploration line and adjacent areas.