GEOLOGY AND GEOCHEMISTRY STUDY AND METALLOGENIC MODEXL RESEARCH OF HETAI GOLD PROVINCE

There are 2 types of gold deposits-the quartz -vein deposit and alteratic mylonite deposit in Hetai Gold Province. Gelolgy and geochemistry research show:the quartz-vein gold deposits which were formed earlier than the forming of ductile shear zone in the area are relevant to Variscan-Tndosinian acid magmatism,But the alteratic mylonite gold deposits which were mainly formed latter than the dectile shear zone are relevant to the Yanshanian acid magmatism. All the deposits in the province belong to mesothermal deposits. The minerogenic depth is from 2 to 3 kilemeter. The source of the gold is mainly from country rock but some gold is probably from foundation bed.