Recognition and thickness identification of aquifuge and interbed in sandstone type uranium deposit: a case study of Shihongtan uranium deposit

The geophysical parameters of ore-hosting aquifer was summarized with the comprehensive logging data at Shihongtan uranium deposit. The contributing factors to the parameters was analysed to identify the distribution and thickness of the aquifuge and interbed. The relation of these layers to sandstone type uranium deposit, their impact to resources/reserves estimation and in-situ leach mining technology are discussed. It was suggested that the aquifuge and interbed bring about significant effect to the formation of interlayer oxidation zone sandstone-type uranium deposit, as well as to in-situ leach mining of the deposit and the established thickness play an important role in resources/reserves estimation. (authors)