Elements oxide %

Sample AR

Sample BO

Sample TM

SiO2

51. 57

49.02

58.51

Al2O3

19.01

15.25

17.48

Fe2O3

7.52

4.34

6.37

CaO

6.33

13.38

3.21

MgO

1.97

1.54

2.67

Na2O

0.67

0.62

0.41

K2O

3.35

2.52

3.38

TiO2

0.34

0.27

0.24

MnO

0.24

0.44

0.11

LOI

8.52

11.67

7.27