Source Beds and Mineralization Model of Multiple Metal Deposits in the Upper Heilongjiang Basin

We summarized geological features and the golden ore deposit distribution rule in the Upper Heilongjiang basin. Through analysis to golden and polymetallic element abundance and the liquid isotope content,we studied the ore-bearing property of the Mesozoic volcanic rock and the sedimentary rock in this region. We thought that in the Heilongjiang basin,gold ore bed mineralization material sources include the deep magma (upper mantle; the earth's crust transition center and the and the country rock. The deep magma and Ershierzhan group constitute the Au mineral resource bed. The Mesozoic volcanic rock was probably the mineral source bed from which Ag,Pb,Zn and the Au ore deposit formed. Then we established the model for mineralization,prospecting. We thought that the known mineralization points and the anomaly relations indicate the prospecting target area. The different geological units suggest that favorable mineralization positions are associated with the contact zones between uplifts and depressions,faults and ring-like structures. In the Ershierzhan group the primary target is to find gold. In the volcanic rock area,polymetallic deposits are the primary goals of survey. And we have determined 4 prospecting areas with golden and the polymetallic mineralization. The practice proved that this forecast is effective.