Element

Sample A

Sample B

Element

Sample A

Sample B

Major element (g∙kg−1)

Trace element (mg∙kg−1)

Fe

389.5

378.5

V

1474

1970

C content

283

278

Ni

102

150

CaO

77.6

66.0

Cu

20

67

SiO2

70.7

71.7

Rb

104

143

MgO

15.7

20.7

Sr

84

115

Al2O3

22.1

27.0

As

50

119

Na2O

4.2

4.0

Ga

26

35

K2O

3.2

2.5

Ba

130

184

Zn

2.5

3.2

Cs

53

90

F

2.5

2.0

Y

5

9

P2O5

1.7

2.3

Zr

19

20

S

5.1

6.1

Mo

0

9

TiO2

2.6

3.6

Sn

8

9

MnO

2.7

3.7

Sb

38

38

Cr2O3

0.10

0.1

La

11

10

Pb

0.39

0.56

Ce

7

35

Cl

0.58

0.78

Pr

4

4

Nd

11

27

Sc

4

4

pH

7.7 - 8.1

Bi

14

30

Moisture %

32

Th

2

2

U

2

2