Item

SiO2

Al2O3

CaO

Cr2O3

Fe2O3

K2O

MgO

MnO

Na2O

P2O5

%

%

%

%

%

%

%

%

%

%

Average

23.42

22.64

9.70

0.01

6.08

0.32

0.19

0.20

0.18

19.00

Maximum

96.04

43.2

36.63

0.07

71.10

4.26

0.70

5.51

0.68

32.94

Minimum

1.88

0.51

<0.01

<0.001

0.26

<0.01

<0.01

<0.001

0.02

0.13

Standard Deviation

23.58

11.60

8.83

0.01

12.31

0.56

0.14

0.88

0.13

9.05

Correlation Coefficient

−0.82

0.66

0.54

−0.14

−0.49

−0.27

−0.02

−0.38

−0.12

1