Rare Earth

Elements (REE)

SAMPLE Nos.

D25

D30

D34

D41

BP14

BP19

NB9

NB14

B5

B12

La

22.14

38.84

26.41

35.18

22.83

25.14

39.84

23.13

26.91

35.27

Ce

44.92

77.21

53.21

71.35

47.24

51.84

77.26

45.94

55.24

71.49

Pr

5.36

8.87

6.31

8.47

5

6.09

8.11

5.49

6.57

8.29

Nd

19.39

31.22

23.19

30.43

18.04

22.4

27.08

19.63

23.82

29.71

Sm

3.96

6.13

4.59

6.09

3.57

4.47

4.76

3.92

4.67

5.86

Eu

0.96

1.33

1.07

1.38

1.11

1.16

1.13

0.98

1.15

1.35

Gd

3.96

5.76

4.21

5.78

3.94

4.33

4.96

3.83

4.69

5.73

Tb

0.71

1.01

0.76

1.07

0.74

0.79

0.84

0.7

0.79

0.99

Dy

4.22

5.69

4.09

6.03

4.23

4.47

4.74

3.9

4.57

5.88

Ho

0.79

1.07

0.76

1.11

0.83

0.85

0.89

0.72

0.85

1.13

Er

2.26

3.26

2.2

3.18

2.45

2.44

2.64

2.15

2.41

3.22

Tm

0.35

0.49

0.34

0.48

0.38

0.38

0.39

0.32

0.36

0.52

Yb

2.01

3.08

1.94

2.83

2.26

2.22

2.42

1.92

1.99

2.96

Lu

0.31

0.43

0.31

0.39

0.33

0.34

0.36

0.28

0.31

0.45

REE ratios

ΣREE

111.34

184.39

129.39

173.77

112.95

126.92

175.42

112.91

134.33

172.85

ΣLREE

96.73

163.6

114.78

152.9

97.79

111.1

158.18

99.09

118.36

151.97

ΣHREE

14.61

20.79

14.61

20.87

15.16

15.82

17.24

13.82

15.97

20.88

ΣLREE/ΣHREE

6.62

7.87

7.86

7.33

6.45

7.02

9.18

7.17

7.41

7.28

Eu/Eu*

0.08

0.07

0.08

0.08

0.1

0.09

0.08

0.08

0.08

0.08

La/Yb

11.01

12.61

13.61

12.43

10.10

11.32

16.46

12.05

13.52

11.92

La/Y

0.94

1.27

1.15

1.09

0.89

1.05

1.45

1.06

1.1

1.06