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小扣花营锰银矿床是一个浅成低温热液脉状矿床，主要物质成分为石英、碳酸盐和硫化物。矿体的稀土元素分配型式以明显的Ｃｅ、Ｅｕ正异常区别于容矿的侏罗系陆相火山岩以及矿体附近的花岗斑岩潜火山岩体。研究表明，在大气降水淋滤火山岩和岩体中的稀土元素并使之发生迁移和沉淀的成矿过程中发生的稀土分馏可以解释火山岩和岩体的稀土元素分配型式与矿体的明显差异。稀土元素的淋滤迁移应使热液比母岩相对富集Ｅｕ、Ｃｅ、Ｙ和ＨＲＥＥ；沉淀过程中热液矿物和热液相比应相对富集Ｅｕ和Ｃｅ，并再次发生轻重稀土的分馏。
Small buckle Huaying manganese silver deposit is a shallow epithermal vein deposits, the main material composition of quartz, carbonate and sulfide. The REE distribution pattern of the orebody distinguishes positive Ce and Eu positive anomaly from the mineralized Jurassic continental volcanic rocks and the granite porphyry subvolcanic volcanic rocks near the ore body. The results show that rare earth fractionation during the leaching of rare earth elements in the volcanic rocks and rock mass caused by atmospheric precipitation and their migration and sedimentation can explain the obvious difference between the REE distribution patterns of volcanic rock and rock mass and the ore body. The leaching and migration of REEs should make the hydrothermal fluids relatively rich in Eu, Ce, Y and HREE than the parent rocks. The hydrothermal minerals and hydrothermal fluids should be relatively enriched in Eu and Ce, and fractional re-occurrence of heavy and light rare earths .