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Rahul kumar
Sedimentary rocks contain most of the Uranium because of mobility of Uranium from host rock. One thing almost all economic uranium deposits have in common is that the uranium is remobilized from one area (ie., leached from a source rock containing minute quantities of U or as mineral grains with elevated U concentrations) and reprecipitated in a host rock where chemical conditions (reducing) are conducive to concentrating the uranium in higher concentrations or redeposited due to water action (waves on beaches or water flow in rivers) in placer deposits or subsequent sedimentary rocks.