Use of alpha sensitive plastic film (ASPF) technique to locate the re-mobilized uranium ore bodies in sandstones

Abstract

In Isakhel (Pakistan), uranium mineralization occurs as re-mobilized ore bodies in Siwalik sandstones. The sandstones consist of detrital material derived from the Himalayan granites. One of the problems related to uranium exploration in these rocks is the young age of ore bodies due to which gamma counters and logging units do not respond properly. Hence extensive drilling is required for the study of these deposits. The use of Alpha Sensitive Plastic Films (ASPF) technique provides a reliable method for the study of such deposits. In this paper, we present our experience of such deposits. The uranium mineralization seems to have mobilized several times due to water table fluctuation and equilibrium between uranium and its daughters has not yet been attained. The ASPF-technique has been found to be quite useful for the exploration of such deposits.