Lava trachyte phonolite

sample

NGO1

NGO2

NGO3

NGZ1

NGZ2

NGDF1

NGDF2

NGZ1

NGZ2

PD1

PD2

SiO₂

64.34

65.77

65.51

66.32

63.21

66.32

63.21

66.29

62.48

66.35

61.93

Al₂O₃

19.97

19.87

20.11

19.71

20.28

19.71

0.28

19.47

20.58

20.30

22.60

FeO

0.32

0.49

0.41

-

-

0.17

0.16

0.18

0.32

0.16

0.21

CaO

0.57

0.62

0.73

0.45

0.83

0.45

0.83

0.37

0.85

0.74

2.76

Na₂O

6.81

7.71

7.43

7.47

8.47

7.46

8.41

6.26

6.44

7.07

8.61

K₂O

6.61

6.02

6.05

6.42

4.22

6.42

4.22

7.81

6.08

6.44

3.31

BaO

1.42

0.15

0.22

-

0.06

-

0.06

0.00

2.84

0.47

1.09

Total

99.62

100.56

100.51

100.35

97.084

100.53

97.283

100.38

99.59

101.52

100.49

Si

2.928

2.935

2.926

2.959

21.904

2.960

2.900

2.968

2.874

2.937

2.784

Al

1.071

1.045

1.051

1.036

1.094

1.040

1.100

1.027

1.116

1. 059

1.198

Fe²⁺

0.012

0.018

0.015

-

-

0.010

0.010

0.007

0.012

0.006

0.08

Ca

0.028

0.030

0.035

0.022

0.041

0.020

0.040

0.018

0.042

0.035

0.133

Na

0.608

0.669

0.645

0.647

0.759

0.650

0.760

0.545

0.576

0.608

0.752

K

0.384

0.343

0.345

0.366

0.247

0.370

0.250

0.446

0.357

0.363

0.19

Ba

0.025

0.003

0.004

0.000

0.001

-

-

0.000

0.051

0.008

0.019

Or

37.8

33.1

33.9

35.3

23.7

35.3

23.7

44.4

39.8

57.6

17.6

Ab

59.4

64.1

62.7

62.6

72.4

62.6

72.4

54.0

56.1

40.6

70.0

An

2.7

2.8

3.5

2.1

3.9

2.1

3.9

1.8

4.1

2.7

12.4