阿里河地区钼多金属元素地球化学特征及典型矿床成因分析

ANALYSIS OF TYPICAL DEPOSIT GENESIS AND GEOCHEMICAL CHARACTERISTICS OF MOLYBDENUM POLYMETALLIC ELEMENTS IN ALIHE AREA

阿里河地区位于大兴安岭北段,近年来发现了许多重要的找矿线索,取得了较好的找矿效果。研究表明,该区Bi和Pb两种元素具明显富集趋势,Ag、Mo等元素具有较高的变异系数,Au、Pb、Mo成矿有利度高,为本区最有利的成矿元素。嘎仙蛇绿构造混杂岩岩块为区内最为成矿有利部位,主成矿元素为Pb、Zn,Ag、As、Cd、W、V、Cu为指示元素。Mo在子区9和子区10中异常明显,也具有较大的成矿潜力。应重点在嘎仙沟、大坑河和西陵梯一带,开展大比例尺的土壤地球化学测量工作,圈定出赋矿地段,实现找矿突破。

Alihe area is located in the northern section of the Greater Khingan Mountains.In recent years,many important prospecting cues have been discovered and good prospecting results have been achieved.The results show that the elements of Bi and Pb in this area have obvious enrichment tendency.Ag,Mo and other elements have higher coefficient of variation,and Au,Pb and Mo have high mineralization advantages,which is the most favorable ore-forming element in this area.The Zhuxian serpentine tectonic melange is the most favorable ore-forming part in the area.The main ore-forming elements are Pb and Zn,while taking Ag,As,Cd,W,V and Cu as indicator elements.Mo is unusually obvious in sub-area 9 and sub-area 10,and also has a large metallogenic potential.Large-scale soil geochemical measurement work should be carried out in Zhunxiangou,Dakeng River and Xiling Ladder area to delineate the ore-producing section and achieve mine-seeking breakthrough.