摘要
Based on geological survey,petrology,lithogeochemistry,geochemistry of REE,this paper summarizes the geological backgroud and characteristics of Yanchenggou V deposit,and studies its geochemical characteristics.The deposit occurs in black rock series of Lower Precambrian Shuigoukou formation in southern Qinling area and is strictly controlled by stratigraphic horizon..The ore-hosted rock is silicalite intercalated with argilaceous rock.The geochemical characteristics imply its position at transitional zone between continental margin and deep-sea environment,and relation with the submarine hydrothermal fluids.