Economic and Environmental Geology

Fig. 1.

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Fig. 1. Relative concentrations of REY in Upper Continental Crust. REY can be divided into LREE, MREE, and HREE. Y generally behaves with MREE since they have similar ionic radius (modified after Seredin and Dai, 2012).
Econ. Environ. Geol. 2022;55:241-59 https://doi.org/10.9719/EEG.2022.55.3.241
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