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TABLE 3 Rare Earth Compositions in the Mantle and Crusts (ppm) La 0.235 Ce 0.620 Pr 0.094 Nd 0.460 Sm 0.150 Eu 0.057 Gd 0.200 Tb 0.037 Dy 0.250 Ho 0.056 Er 0.160 Tm 0.025 Yb 0.160 Lu 0.025 Y 1.56 Sc 5.90 Total 9.99 0.508 1.340 0.203 0.994 0.324 0.123 0.432 0.080 0.540 0.121 0.346 0.054 0.346 0.054 3.37 12.7 21.54 2.13 5.81 0.94 4.90 1.70 0.62 2.25 0.43 2.84 0.63 1.85 0.28 1.85 0.28 18.1 36.2 80.81 8 20 2.4 11 2.8 1.1 3.1 0.5 3.1 0.7 1.9 0.24 1.5 0.25 16 31 104 24 53 5.8 25 4.6 1.4 4.0 0.7 3.8 0.82 2.3 0.32 2.2 0.4 20 19 167 31 63 7.1 27 4.7 1.0 4.0 0.7 3.9 0.83 2.3 0.30 2.0 0.31 21 14 183 20 43 4.9 20 3.9 1.1 3.7 0.6 3.6 0.77 2.1 0.28 1.9 0.30 19 21.9 147 CI Chondrite (Lodders and Fegley, 1998) Primitive Mantle (Lyubetskaya and Korenaga, 2007) Oceanic Crust (White and Klein, 2013) Lower Continental Crust (Rudnick and Gao, 2003) Middle Continental Crust (Rudnick and Gao, 2003) Upper Continental Crust (Rudnick and Gao, 2003) Continental Crust (Rudnick and Gao, 2003)PDF Image | HANDBOOK ON THE PHYSICS AND CHEMISTRY OF RARE EARTHS
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