La

ppm

Ce

ppm

Pr

ppm

Nd

ppm

Sm

ppm

Eu

ppm

Gd

ppm

Tb

ppm

Dy

ppm

859

2060

261

990

140

7

110

12

52

Ho

ppm

Er

ppm

Tm

ppm

Yb

ppm

Lu

ppm

Y

ppm

TREE

LR/HRa

ppm

wt%

8

22

2

12

2

193

4729

0.47

91%/9%