High Quality Content by WIKIPEDIA articles! Uranium ore deposits are economically recoverable concentrations of uranium within the Earth`s crust. Uranium is one of the more common elements in the Earth`s crust, some 40 times more common than silver and 500 times more common than gold. It can be found almost everywhere in rock, soil, rivers, and oceans. The challenge is to find those areas where the concentrations are adequate to form an economically viable deposit.