Formula

Na2O

K2O

MgO

CaO

MnO

FeO

Al2O3

SiO2

Total

O=

Total

1

8.24

0.09

0.02

4.79

0

0.73

24.03

63.31

101.21

101.21

2

9.13

0.08

0

4.43

0

0

24.36

64.47

102.47

102.47

3

9.74

0.04

0.02

4.28

0

0

22.17

62.12

98.36

98.36

4

9.72

0.07

0

4.53

0

0.09

22.48

62.14

99.02

99.02