SAMPLE

Ba₁

Ba₂

CA-Ba

And

Major elements (wt%)

SiO₂

50.9

50.5

54

55

TiO₂

1.1

1.2

0.6

1.2

Al₂O₃

14.2

15.2

13.7

14.7

Fe₂O₃

12.7

12.9

9.6

11.5

MnO

0.2

0.2

0.2

0.2

MgO

4.5

5.5

3.8

3.8

CaO

13.1

12.4

13.6

8.5

Na₂O

1.3

1.4

1.3

3.2

K₂O

0.1

0.2

0.2

0.3

P₂O₅

0.1

0.1

0.1

0.1

LOI

1.9

0.5

2.8

1.4

Total

98.1

99.5

97.2

98.6

Traces elements (ppm)

Rb

4.5

3.4

9.9

8

Ba

394

61

46

184

Sr

163.1

191.9

313.4

290.6

Th

0.5

0.2

1.4

1.7

U

0.2

<0.1

0.4

0.5

Ta

0.3

0.3

0.4

0.3

Nb

3.4

3.2

4.1

4.1

Hf

1.6

1.9

2.3

3.1

Zr

55

65.7

82.6

111.3

Sc

37.9

24.7

22.3

17.4

La

6.7

4

11.4

12.6

Ce

9.4

9.9

22.9

24.2

Pr

2.1

1.6

3.2

3.1

Nd

10.3

8.9

13.9

13.8

Sm

2.9

2.6

2.8

3.4

Eu

1

1.1

0.9

1

Gd

3.9

3.8

3.4

3.7

Tb

0.7

0.6

0.6

0.7

Dy

4.3

4.2

3.8

3.6

Ho

0.9

1

0.8

0.9

Er

2.7

2.9

2.5

2.9

Yb

2.5

2.8

2.5

2.8

Lu

0.4

0.4

0.4

0.4

Eu/Eu*

0.90

1.03

0.85

0.84

(La/Yb)_N

1.81

0.99

3.15

3.06

(La/Sm)_N

1.45

0.96

2.55

2.32

Au

6 ppb

3 ppb

5 ppb

5 ppb