Table 1 Compositional data in weight percent and results of CIPW norm of Chang'e-3 soils from Yutu APXS after calibration.

From: Correlated compositional and mineralogical investigations at the Chang′e-3 landing site

 

CE3-0006_1 †

CE3-0006_2

CE3-0006_3

CE3-0008

Mean_0006 †

Mean_all †

SiO2

41.8±3.1

42.3±3.2

41.6±3.1

39.6±3.0

42.0±3.1

41.2±3.1

TiO2

5.0±0.1

5.2±0.1

5.1±0.1

4.6±0.1

5.2±0.1

5.0±0.1

Al2O3

10.0±0.7

9.8±0.6

10.0±0.7

9.3±0.6

9.9±0.7

9.7±0.6

Cr2O3*

0.3

0.3

0.3

0.3

0.3

0.3

FeO

21.7±2.0

22.7±2.1

22.6±2.1

23.0±2.1

22.6±2.1

22.8±2.1

MnO*

0.3

0.3

0.3

0.3

0.3

0.3

MgO

8.1±0.1

6.3±0.1

7.0±0.1

11.0±0.1

6.7±0.1

8.1±0.1

CaO

12.3±0.4

12.6±0.4

12.6±0.4

11.2±0.3

12.6±0.4

12.1±0.4

Na2O*

0.3

0.3

0.3

0.3

0.3

0.3

K2O

0.11±0.01

0.12±0.01

0.11±0.01

0.11±0.01

0.12±0.01

0.11±0.01

P2O5*

0.1

0.1

0.1

0.1

0.1

0.1

Plag (wt.%)

28

27

28

26

28

27

Di (wt.%)‡

29

31

31

26

31

29

Hy (wt.%)‡

15

20

15

3

18

13

∑ Px (wt.%)

45

52

46

29

49

42

Ol (wt.%)

16

10

15

34

12

20

Ilm (wt.%)

10

10

10

9

10

9

Plag (vol.%)

34

33

34

32

33

33

Di (vol.%)

31

33

32

28

33

31

Hy (vol.%)

14

18

14

3

16

12

∑ Px (vol.%)

45

51

46

31

49

43

Ol (vol.%)

14

8

12

30

10

17

Ilm (vol.%)

7

7

7

6

7

7

Plag An

88

88

88

88

88

88

Oliv Fo

46

38

41

51

40

43

Mg#

40

33

36

46

34

38

  1. Among the four locations, only two (CE3-0006 and CE3-0008) were analysed by APXS.
  2. *The compositional data are normalized to 99% to allow for missing elements. (Missing elements Cr2O3, MnO, Na2O and P2O5 are set to 0.3, 0.3, 0.3 and 0.1 wt.% for more reasonable calculations of CIPW norms. Fe3+/FeTotal are assumed to be 0.0 for lunar minerals for the CIPW calculations.
  3. †CE3-0006_1 is for reference in the test mode with a detection distance of ∼5 cm above the surface soils, and thus is not included in the calculation of Mean_0006). Mean_0006 is the average value of CE3-0006_2 and CE3-0006_3. Mean_all is the average value of CE3-0006_2 and CE3-0006_3 and CE3-0008. Among the four locations, only two (CE3-0006 and CE3-0008) were analysed by APXS.
  4. ‡In the CIPW calculation, we refer to the sum of HCP components (Di Wo, Di En and Di Fs) as Di, whereas the Hy is the sum of Hy En and Hy Fs. Mg#, 100Mg/(Mg+Fe) atomic.
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