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Table 2 Elemental compositions from EDS measurements

From: Complementary scientific techniques for the study of Mesoamerican greenstone objects

Accession #

at%

%JdEDS

O

Na

Mg

Al

Si

Ca

C

Fe

K

1973.34

52.0 (4.3)

4.6 (0.6)

3.1 (0.5)

4.7 (0.5)

16.9 (2.3)

3.6 (0.5)

18.0 (3.4)

0.6 (0.1)

 

55.5

1973.37

42.0 (1.2)

4.6 (0.2)

0.5 (0.01)

4.8 (0.3)

10.2 (0.7)

0.4 (0.03)

36.9 (0.03)

0.1 (0.03)

0.4 (0.1)

90.1

2008.82.4

51.0 (1.5)

6.0 (0.3)

1.2 (0.3)

5.4 (0.3)

12.8 (0.7)

1.0 (0.3)

22.3 (2.9)

0.21 (0.03)

0.05 (0.02)

83.2

2008.79

46.2 (2.3)

4.0 (0.5)

1.9 (0.2)

4.2 (0.3)

11.8 (1.4)

2.1 (0.4)

29.1 (5.0)

0.6 (0.1)

 

64.3

2008.74

24.1 (4.6)

1.6 (0.5)

0.3 (0.1)

1.5 (0.6)

4.5 (1.6)

0.3 (0.1)

67.2 (7.3)

0.12 (0.04)

0.1 (0.02)

81.8

2000.232.FA

44.9 (0.7)

5.1 (0.2)

0.4 (0.1)

5.2 (0.2)

11.3 (0.4)

0.4 (0.1)

32.0 (0.6)

0.4 (0.1)

0.1 (0.03)

91.6

1969.23

37.1 (2.8)

0.4 (1.3)

2.0 (1.2)

4.7 (2.4)

8.0 (0.2)

4.8 (1.2)

41.9 (4.5)

0.5 (0.2)

0.2 (0.1)

41.1

  1. The equation used for the %Jd calculation is described in “Plaque fragment with a human head in profile (2008.79)” section