0.005±0.000 0.006±0.000 (0.24) (0.26) (0.21) (0.21) Dy 0.022±0.002 0.026±0.003 0.022±0.000 0.022±0.002 (1.07) (1.14) (0.94) (0.76) Ho 0.005±0.000 0.005±0.000 0.005±0.000 0.005±0.000 (0.24) (0.22) (0.21) (0.17) Er 0.012±0.001 0.015±0.001 0.012±0.000 0.014±0.002 (0.58) (0.66) (0.52) (0.48) Tm 0.002±0.000 0.002±0.000 0.002±0.000 0.002±0.000 (0.10) (0.09) (0.09) (0.07) Yb 0.011±0.001 0.013±0.001 0.011±0.000 0.011±0.001 (0.53) (0.57) (0.47) (0.38) Lu 0.002±0.001 0.002±0.000 0.002±0.000 0.002±0.000 (0.10) (0.09) (0.09) (0.07) ΣCe 1.798 2.041 2.104 2.660 (87.24) (89.32) (90.34) (91.82) ΣY 0.263 0.244 0.255 0.237 (12.76) (10.68) (9.66) (8.18) ΣCe/ΣY 6.836 8.356 9.351 11.223 ΣREE 2.061 2.285 2.329 2.897

　　注：ΣCe=La～Eu的含量总和，即铈组或轻稀土总量；ΣY=Gd～Lu和Y的含量总和，即钇组或重稀土总量；ΣREE为15种稀土元素(除Pm、Sc外)的含量总和