The Yanshan period granite is the parent rock of Bairendaba Ag-Pb-Zn polymetallic ore deposit. The strong alteration was closely related to the mineralization. According to ore fabric determine mineralization can be divided into four stages

colloidal pyrite-quartz stage

arsenopyrite-iron sphalerite and pyrrhotite quartz stage

polymetallic sulfide-stage quartz fluorite carbonate and quartz stage. The fold structure develops in the ore deposit

and the EW faults is the main ore controlling structure. The study of fluid inclusions shows that the ore-forming fluids are mainly in the low temperature range and the low oxygen ease. Pb

S

H and O isotope studies show that the ore-forming materials are of deep origin

and the ore-forming fluids are mainly derived from magmatic rocks and a small amount of water in the atmosphere. The ore deposit is a medium low temperature hydrothermal deposit which is controlled by the faults and is related to the Yanshan period magmatic hydrothermal solution. With a plurality of prospecting criteria

the Bairendaba Ag-Pb-Zn polymetallic ore deposit metallogenic prospect is well.