Nwb1

Nwb2

Nwb3

Nwb4

Nwb5

Nwb6

Nwb7

Nwb8

Nwb9

SiO₂

72.9

72.7

74.2

76.4

73.6

78.1

75.2

76

75.7

Al₂O₃

15.6

15.6

15.6

13.7

15.4

12.1

13.4

13.2

13.2

Fe₂O₃

0.3

0.4

0.5

0.6

0.3

0.6

0.6

0.6

0.6

MnO

0.1

0.1

0.1

0.1

0.1

0.2

0.1

0.1

0.1

CaO

0

0

0.1

0.1

0.1

0.1

0.1

0.1

0.2

Na₂O

6.7

6.9

6.1

4.2

6.5

4.3

5.4

5.2

5.2

K₂O

3.7

3.4

4.2

5.1

3.6

4.1

3.9

3.9

4

IL

0.5

0.5

0.5

0.6

0.5

0.6

0.6

0.4

0.6

Total

100

100

101

101

100

100

99

100

100

Ba

11

7.1

3.7

8.6

13.8

3.6

6.4

1.9

3

Be

2.9

3.3

3.5

3.8

3

3

4.2

3.8

3.9

Bi

6.4

8.1

11

32

8.3

0.2

0.2

0.2

0.3

Ce

11.1

11.2

8.2

8.7

10.5

15.4

31

12

28.3

Cr

15.1

22.9

32

28.4

14.9

13.2

13

17.7

20

Cs

1.3

1.5

2

2.2

1.4

5.1

4.1

3.5

3.9

Dy

2.8

2.5

3

1.5

2.7

2.7

7.9

5.3

6.2

Er

2

1.8

2.3

1.1

2.1

2.5

7

4.2

5.5

Eu

0

0

0

0

0

0

0

0

0

Ga

77

79

76

62

76

51

52

51

49

Gd

0.8

0.7

0.7

0.6

0.7

0.8

2.9

2.4

2.9

Ge

5.8

5.7

6

5.5

5.6

4.4

4.5

4.1

3.8

Hf

23.2

23.2

22.3

10

22.6

23

22.2

18.2

21.2

Ho

0.5

0.5

0.6

0.3

0.5

0.6

1.7

1.1

1.3

In

0.1

0.1

0.2

0.8

0.1

0.2

0.1

0.1

La

1.8

1.9

1.9

2.3

1.6

4.6

8

4.9

8.1

Lu

1

1

1.2

0.5

1.2

1.8

3.1

2.2

3.2

Mo

2.6

0.8

11.7

9

1.6

0.6

Nb

56

53.5

58.8

63.7

68.9

122

72

37.3

44.8

Nd

4.2

4.3

3.3

3.4

3.2

5.7

14.4

11

15.2

Pb

45.3

35.7

52

57

48.2

39.1

53

47.3

52

Pr

1.5

1.6

1.2

1.2

1.2

2.1

4.3

2.8

4.2

Rb

469

431

531

553

504

603

500

361

407