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Although carbonatites potentially contain a larger concentration of rare earth elements (REEs) than any rock type, the origin of the REE mineralization in the world's largest Bayan Obo carbonatite-related deposit is still disputed. In order to clarify the mechanism of REE mineralization, carbonatite samples from three large REE deposits in China, Daluxiang, Maoniuping and Bayan Obo were compared....
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