Sample

Sio₂

TiO

Al₂O₃

Fe₂O₃

MgO

Ca₂

Na₂O

K₂O

SO₃

Total

1Ra

19.25

1.55

32.25

37.54

1.65

-

-

0.51

-

92.75

3Ra

21.86

1.68

24.01

28.36

1.47

2.44

5.13

-

0.72

85.67

5Ra

29.22

2.03

19.63

7.14

0.96

5.19

7.85

-

-

72.02

6Ra

21.62

1.35

11.12

8.39

-

1.42

1.79

-

-

45.69

10Ra

22.48

1.25

19.83

2.75

0.92

-

4.97

-

1.52

53.72

11Ra

32.83

3.10

20.55

12.86

1.32

3.00

1.94

0.80

-

76.4

Minimum

19.25

1.25

11.12

2.75

0.92

1.42

1.79

0.51

0.72

-

Maximum

32.83

3.10

32.25

37.54

1.65

5.19

7.85

0.80

1.52

-

Average

24.54

1.82

21.23

16.17

1.05

2.00

3.61

0.21

0.37

-