碧口块状硫化物矿床直接赋矿主岩硅质岩地质特征及常量、微量、稀土元素组成表明，碧口岩群硅质岩为同火山岩喷流热水沉积成因。碧口岩群硅质岩常量元素富Fe、贫Si，为典型热水沉积成因；其微量元素、稀土元素特征均与现代大洋热水沉积物相似。热水硅质岩Eu异常与古流体温度存在密切关系，Eu／Eu特征显示筏子坝、铜矿坡为较高温度喷流产物，而大茅坪、黑窝子、铜矿梁、周家坡则为较低温度下的产物。 The geological characteristics, trace elements and REE composition of the host rock chert hematite directly deposited in the Bikou Massive Sulfide Deposit show that the biogas group chert is the hydrothermal sedimentary origin of the same volcanic jet. The Biaokou group chert is rich in Fe and Si, and is a typical hydrothermal sedimentary genesis. Trace elements and rare earth elements are similar to modern oceanic hydrothermal sediments. The Eu anomaly in the hydrothermal chert is closely related to the paleo-fluid temperature. The Eu / Eu feature shows that the raft dam and the copper mine slope are higher temperature jet products, while the Mauoping, Heinuozi, Product at temperature.