Table 3.
Rare earth elements and Y, determined by ICP-MS and expressed in mg/kg, and derived parameters in samples.
93867 | 93868 | 93869 | 93870 | 93871 | 93872 | |
---|---|---|---|---|---|---|
| ||||||
La | 23.0 | 6.85 | 13.7 | 13.2 | 5.57 | 17.2 |
Ce | 52.2 | 15.8 | 29.9 | 28.7 | 10.8 | 36.6 |
Pr | 5.69 | 1.80 | 3.41 | 3.24 | 1.25 | 4.04 |
Nd | 23.2 | 7.28 | 13.9 | 13.2 | 5.28 | 16.7 |
Sm | 4.35 | 1.30 | 2.56 | 2.42 | 1.06 | 3.10 |
Eu | 1.95 | 3.90 | 4.61 | 3.38 | 6.35 | 6.51 |
Gd | 4.83 | 1.59 | 3.12 | 2.91 | 1.45 | 3.98 |
Tb | 0.62 | 0.18 | 0.35 | 0.33 | 0.14 | 0.39 |
Dy | 3.49 | 1.06 | 1.89 | 1.83 | 0.77 | 2.14 |
Y | 20.3 | 6.42 | 12.6 | 12.6 | 5.06 | 12.6 |
Ho | 0.70 | 0.22 | 0.37 | 0.36 | 0.15 | 0.41 |
Er | 2.03 | 0.69 | 1.03 | 1.05 | 0.42 | 1.16 |
Tm | 0.29 | 0.10 | 0.14 | 0.14 | 0.06 | 0.17 |
Yb | 1.90 | 0.63 | 0.94 | 0.91 | 0.39 | 1.12 |
Lu | 0.28 | 0.09 | 0.14 | 0.13 | 0.06 | 0.16 |
ΣREEY | 145 | 47.9 | 88.6 | 84.5 | 38.8 | 106 |
LREE/HREE | 3.9 | 4.1 | 4.1 | 3.9 | 4.5 | 4.8 |
% LREE | 79.6 | 80.4 | 80.3 | 79.4 | 81.8 | 82.9 |
Y/Ho | 29.2 | 29.0 | 33.9 | 35.4 | 34.3 | 31.1 |
EuN/EuN* | 2.29 | 15.7 | 9.35 | 7.22 | 31.5 | 11.2 |
CeN/CeN* | 1.04 | 1.02 | 1.00 | 1.00 | 0.93 | 1.00 |
LaN/LuN | 0.88 | 0.81 | 1.08 | 1.06 | 0.99 | 1.15 |
LaN/SmN | 0.79 | 0.79 | 0.80 | 0.82 | 0.79 | 0.83 |
GdN/LuN | 1.45 | 1.48 | 1.94 | 1.84 | 2.04 | 2.09 |
EuN* and CeN* calcuated after Dai et al. (2016)