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Uranium occurs in minerals including pitchblende, carnotite, cleveite, autunite, uraninite, uranophane, and tobernite. It is also found in phosphate rock, lignite, and monazite sands. Radium is always associated with uranium ores. Uranium can be prepared by reducing uranium halides with alkali or alkaline earth metals or by reducing uranium oxides by calcium, carbon, or aluminum at elevated temperatures. The metal can be produced through electrolysis of KUF5 or UF4, dissolved in a molten mixture of CaCl2 and NaCl. High-purity uranium can be prepared by the thermal decomposition of uranium halides on a hot filament. Or look on the perodic table hope it works :D

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