Abstract: The Huanaote Ag-polymetallic mining area is located in the late paleozoic hyperplasia belt of Jilinbaolige brigade of the palaeozoic hyperplasia of continental south-east Siberia,and it is also located in the Fe,Zn,W,Au,Pb,Cu metallogenic belt of the paleozoic and mesozoic of the middle section of Daxing'an mountains.Based on the geological working results of the Huanaote Au-polymetallic mining area,the geological characteristics of the mining area and deposits are analyzed in detail,the results show that:①the Huanaote Ag-polymetallic deposit is large medium-low temperature hydrothermal vein deposit,it is controlled by NW-direction fracture tectonic belt,it is formed in the hydrothermal activity period in the middle Triassic magmatic intrusion period;②the deposit is given priority to Ag,followed by Pb,Zn and Cu,and associated with Au,S,As,Cd,Ga and In;③the ore-body depth of the main ore-bodies of the Huanaote Ag-polymetallic deposit is more than -500 m,the buried depth of the ore-bodies is large,besides that,its paragenetic elements and associated elements are rich.Based on the above analysis results,the deposit genesis is discussed,the results show that Huanaote Ag-polymetallic is hydrothermal type deposit related to syenogranite.The above analysis results of the paper can provide some reference for the prospecting work of Ag-polymetallic deposit in the mining area.

Key words: Ag-polymetallic deposit, Regional geological background, Geological characteristics, Deposit genesis