Geological characteristics and matallogenic prediction of Gaosongshan gold deposit in Xunke of Heilongjiang Province

The Gaosongshan gold deposit is an epithermal deposit related to volcanic action.There are 3 types in the ore type including auriferous quartz vein,structural breccia and altering-rocks.The gold bodies,with no magnetic field and high resistivity,are distinguished with the wall rocks by physical feature.In the gold ore,such elements are closely correlative as Au,Ag,As,Sb and Cu.The abundance of Au in the volcanic rocks is high.Both absolute and relative departure degrees are large.The Au abnormalities are of large-scale,high-intensity and obvious zoning,which can provide important base for the geophysical and geochemical explorations.The S isotope in the ore is characterized by the deep-derived magma sulfur.Both H and O isotopes show that there happened the mixing of the meteoric water during the ore-forming process.The ore body is located in the Upper Cretaceous volcanic rocks whose petrologic geochemistry indicates they formed under the tectonic settings of the active continental margin.According to the data on geology,geophysics,geochemistry and remote sensing,in the west of deposit area,both the depth of ore body No.1 and the east of the Wuyun Basin of Heilongjiang are estimated as metallogenic predication areas.