early Precambrian metamorphic rocks are most important source bed of Au,Cu, Pb, Zn, B; stratum of Jixian system rich in Au,As,Sb,Bi is advantageous to searching for disseminated gold deposits;

• 早前寒武纪变质岩石是Au、Cu、Pb、Zn、B元素最重要的矿源层,蓟县纪地层富含Au、As、Sb、Bi等元素,是寻找浸染型金矿的有利层位;