Study on Geological Characteristics of Uranium Mineralization and Control Factors in Huangmeijian Area,Anhui Province

Huangmeijian area is located in the southeastern margin of the Luzong volcano rock basin in Anhui province,is the most potential uranium prospecting area in Anhui province.Xucun and Dingjiashan uranium deposit and numerous uranium occurrences are found by the previous work,the controlled uranium metal resources amountes to medium scale.This paper describes in detail the geological characteristics of uranium mineralization in Huangmeijian area,discussed the ore control factors,puts forward suggestions for future exploration.The main controlling factors of uranium deposits(point) include quartz syenites in the late Yanshan,Jurassic favorable orebearing lithology,nearly E-W structure and alteration control,especially the Jurassic LuoLing group(J2l) and Millshan group(J1m) sandstone of rock occurrence mutation sites of the rock mass and nearly E-W structure clamping strip are favorable positions of uranium mineralization,types of uranium mineralization are magmatic hydrothermal type related to alkaline rocks.It is suggested that the West of Dingjiashan uranium deposition and Zhoutan-Tianbu zone of southern Huangmeijian rock mass should be as the preferred site of the next step prospecting work.