Earth’s core

C-type

S-type

Martian

H

0.60

2.02

0.331

-----

C

-----

3.46

1.03

-----

O

2.05

46.5

38.9

41.4

Na

-----

0.491

0.631

0.789

Mg

-----

9.55

14.1

9.24

Al

-----

0.871

1.19

3.29

Si

-----

10.7

17.6

21.7

S

-----

5.27

1.66

0.170

K

-----

-----

0.08

0.08

Ca

-----

0.930

1.21

5.34

Ti

-----

-----

0.08

0.460

Fe

89.6

18.6

20.7

15.0

Ni

5.40

1.10

1.12

-----

Others

0.300

0.508

1.37

2.52

40.2

15.5

21.7

23.1