Ag(polymetal) deposits in the north Hebei poovince are genetically dirvided into volcao-subvolcano hydrothermal type and magmatic hydrothermal type and dominated by the former.

• 冀北地区银(多金属)矿床成因类型可划分为火山-次火山热液型和岩浆热液型,以火山-次火山热液型为主。