TABLE 7.17. Trace element abundances (parts per million) in bulk soils
and separated size fractions of reference suite lunar soils and sample
15601

*(Papike et al.,* 1982; *Brunfelt et al.,* 1972a).

Sample Size, µm Sc V Co Ba Sr La Ce Nd Sm Eu Tb Dy Ho Tm Yb Lu Hf Ta Th
U Ni\*

10084,1591 Bulk 60.2 70 28.0 170 160 15.8 43 37 11.4 1.60 2.9 17 4.1 1.6
10.0 1.39 9.00 1.25 1.90 0.5 200

\>90 64.7 70 30.5 160 160 15.4 44 36 11.8 1.65 3.0 18 4.3 1.6 10.3 1.47
8.90 1.20 2.00 0.5 230

20-90 66.4 80 28.4 150 160 14.9 42 36 11.9 1.60 3.0 18 4.3 1.6 10.6 1.53
8.95 1.20 1.90 0.5 190

10-20 55.3 70 30.3 180 180 15.4 44 37 11.4 1.70 2.9 18 4.2 1.5 10.0 1.43
9.32 1.30 2.00 0.5 290

\<10 46.9 70 37.4 210 190 18.3 52 40 12.8 1.95 2.9 18 4.2 1.5 10.1 1.43
9.60 1.40 2.60 0.7 450

12001,599 Bulk 40.2 110 42.5 430 140 35.6 85 57 17.3 1.85 3.7 22 5.0 1.8
13.0 1.85 11.8 1.50 5.40 190

\>90 42.0 120 43.0 420 130 34.7 87 57 16.7 1.85 3.8 22 4.8 2.0 12.6 1.80
11.8 1.60 5.70 1.7 150

20-90 42.0 120 45.2 380 120 31.1 78 54 15.2 1.70 3.4 20 4.8 1.9 11.9
1.70 11.6 1.50 5.10 1.4 210

10-20 38.0 110 46.2 410 130 36.3 95 63 17.5 1.95 3.5 21 5.0 2.1 13.0
1.85 13.3 1.65 6.40 1.7 400

\<10 31.0 100 41.0 500 160 44.6 112 75 21.4 2.15 4.3 26 6.2 2.3 14.5
2.05 12.8 1.75 7.30 2.0 600

12033,464 Bulk 36.4 100 34.3 600 160 50.0 133 85 22.8 2.45 4.9 30 7.2
2.6 17.3 2.45 16.6 2.20 8.50 2.4 130

\>90 34.6 100 31.3 670 160 60.7 150 95 27.7 2.60 5.6 34 7.8 3.2 20.8
2.96 21.2 2.60 10.2 2.6 110

20-90 40.7 100 39.5 530 150 43.6 112 74 20.5 2.20 4.3 26 6.5 2.3 16.2
2.40 17.0 2.10 7.50 2.2 190

10-20 34.5 100 32.3 540 170 43.0 120 76 19.0 2.30 4.4 25 6.4 2.5 15.5
2.20 17.0 2.10 8.40 2.1 220

\<10 28.2 90 32.0 660 190 62.4 170 105 28.4 2.70 5.7 33 8.0 3.0 19.2
2.70 15.2 2.30 10.8 2.7 600

14163,778 Bulk 21.7 45 33.0 800 170 66.7 170 100 29.1 2.45 5.9 36 8.6
3.2 21.2 3.00 22.5 2.90 13.3 3.5 350

\>90 21.1 35 32.5 800 180 73.0 185 110 30.2 2.40 6.3 40 9.4 3.6 23.4
3.20 23.5 2.90 14.7 3.5 380

20-90 23.5 50 35.5 730 160 60.6 154 95 25.2 2.30 5.4 35 8.6 3.2 20.5
2.90 22.0 2.80 12.4 3.1 380

10-20 21.3 45 30.5 780 160 63.4 160 103 26.4 2.30 5.5 36 8.6 3.2 20.2
2.85 22.0 2.90 12.4 3.3 480

\<10 18.5 40 31.0 890 190 79.1 200 120 33.7 2.65 6.5 41 10 3.6 22.4 3.16
20.2 3.10 15.2 4.0 690

15221,29 Bulk 21.2 80 41.0 240 120 20.5 54 36 9.70 1.30 2.0 12 2.9 1.1
6.90 0.97 6.70 0.93 3.00 360

\>90 22.7 70 34.5 250 140 22.6 58 40 10.8 1.50 2.1 13 3.1 1.2 8.10 1.15
7.50 0.96 3.30 1.0 220

20-90 22.7 85 37.0 210 120 20.0 50 32 9.56 1.20 2.0 12 2.9 1.1 7.10 1.00
6.60 0.90 3.10 0.9 220

10-20 20.8 70 35.5 250 130 22.1 59 36 10.7 1.40 2.2 13 3.2 1.2 7.60 1.10
7.60 1.00 3.75 1.0 290

\<10 17.8 75 36.0 300 130 27.2 69 44 12.5 1.60 2.6 15 3.7 1.2 8.20 1.15
7.60 1.10 4.10 1.3 640

15271,27 Bulk 24.3 80 40.5 300 130 25.8 70 45 12.0 1.50 2.6 15 3.9 1.4
8.54 1.20 8.60 1.20 4.60 1.2 230

\>90 26.1 85 39.0 280 130 27.1 70 44 12.6 1.60 2.7 15 3.9 1.3 9.00 1.27
9.00 1.10 4.30 1.3 200

20-90 26.5 80 41.0 280 130 25.7 66 43 12.2 1.50 2.6 15 3.9 1.4 9.00 1.27
9.30 1.20 4.10 1.1 200

10-20 23.4 80 39.0 280 130 25.9 70 46 12.3 1.50 2.5 15 3.9 1.3 8.75 1.25
9.40 1.20 4.30 1.2 370

\<10 18.3 70 36.4 340 130 31.0 82 54 14.4 1.70 2.7 16 3.9 1.4 9.20 1.30
8.20 1.30 4.72 1.2 700

64501,122 Bulk 8.0 20 19.5 130 170 10.8 28 19 4.79 1.05 1.0 6.0 1.4 0.55
3.40 0.49 3.30 0.45 1.85 0.4 300

\>90 8.9 20 21.0 120 160 10.6 27 18 4.70 1.10 1.0 6.0 1.4 0.60 3.60 0.51
3.50 0.43 1.70 0.5 340

20-90 7.8 15 20.1 120 160 10.8 27 18 4.70 1.10 1.0 6.4 1.5 0.56 3.50
0.50 3.50 0.45 1.80 0.5 320

10-20 8.2 20 17.9 130 160 11.5 30 20 5.20 1.05 1.1 6.5 1.6 0.60 3.90
0.55 3.80 0.47 1.85 0.5 400

\<10 7.6 20 22.5 140 170 13.6 34 22 5.83 1.15 1.2 7.5 1.8 0.65 4.00 0.54
4.00 0.54 2.25 0.55 850

TABLE 7.17. (continued).

Sample Size, µm Sc V Co Ba Sr La Ce Nd Sm Eu Tb Dy Ho Tm Yb Lu Hf Ta Th
U Ni\*

67461,74 Bulk 7.8 20 9.0 60 170 4.67 12 7.2 2.00 1.00 0.45 2.8 0.25 1.60
0.22 1.60 0.24 0.83 80

\>90 8.4 20 10 60 160 4.40 11 7.0 2.00 0.95 0.43 2.9 0.24 1.55 0.21 1.30
0.20 0.82 100

20-90 8.1 20 14 70 170 4.78 12 7.7 2.17 0.98 0.47 3.0 0.27 1.73 0.26
1.50 0.24 0.81 170 10-20 8.1 20 9.2 70 170 4.85 12 8.3 2.20 0.98 0.44
3.0 0.28 1.76 0.25 1.70 0.22 0.83 200

\<10 7.7 15 9.5 75 160 5.60 15 10 2.44 1.00 0.56 3.2 0.33 1.80 0.26 1.95
0.25 0.89 540

72501,15 Bulk 20.0 45 33.0 210 160 16.2 46 29 8.00 1.30 1.6 10.0 0.84
5.90 0.82 6.00 0.90 3.00 1.0 260

\>90 18.6 45 27.0 230 180 18.6 49 30 8.75 1.40 1.7 11.7 0.98 6.50 0.93
6.50 0.90 3.50 1.0 240

20-90 21.5 50 31.0 210 170 15.1 40 27 7.70 1.25 1.6 10.7 0.84 6.00 0.90
6.40 0.85 3.00 1.0 260

10-20 19.4 50 28.7 210 180 15.5 42 26 7.63 1.30 1.6 10.5 0.89 5.70 0.80
6.00 0.80 2.80 0.8 340

\<10 17.2 45 30.0 210 190 17.5 46 30 8.10 1.30 1.6 10.5 0.86 5.70 0.79
5.60 0.95 3.20 0.9 700

76501,48 Bulk 28.0 65 30.4 120 160 8.30 23 16 5.30 1.20 1.2 8.3 0.71
4.60 0.66 4.20 0.70 1.60 0.4 190

\>90 27.7 50 32.6 130 160 8.30 22 17 5.30 1.20 1.2 8.0 0.70 4.40 0.64
4.20 0.72 1.50 0.4 220

20-90 32.5 70 32.5 120 160 8.20 23 16 5.40 1.25 1.3 8.2 0.71 4.70 0.72
4.60 0.80 1.60 0.4 220 10-20 28.9 60 31.0 120 160 8.80 26 18 5.75 1.25
1.3 8.3 0.69 4.60 0.66 4.80 0.80 1.75 0.4 300

\<10 24.5 60 32.0 150 190 10.4 29 20 6.30 1.35 1.4 8.6 0.71 4.70 0.68
4.70 0.80 2.00 0.5 6.00

78221,71 Bulk 36.3 70 40.0 120 160 8.10 24 16 5.46 1.25 1.3 8.4 0.72
4.70 0.70 4.70 0.86 1.60 0.4 200

\>90 39.8 70 37.0 140 160 8.00 23 17 5.55 1.25 1.3 8.7 0.71 4.90 0.73
4.60 0.85 1.40 0.4 250

20-90 39.5 75 35.0 110 160 8.30 24 18 5.75 1.30 1.3 8.5 0.74 5.10 0.75
4.90 0.85 1.40 0.4 230

10-20 33.2 75 34.5 120 160 8.90 26 18 5.80 1.30 1.3 9.1 0.75 4.90 0.74
5.10 1.00 1.60 0.4 350

\<10 29.3 65 36.5 170 170 11.4 30 22 6.90 1.50 1.5 10.0 0.81 5.40 0.79
5.00 0.93 1.85 0.4 600

Luna 16 Bulk 52.0 80 29.6 180 260 11.6 33 26 8.25 2.15 1.7 11 0.90 5.70
0.80 7.04 0.50 1.39 0.4 200

21000,5 \>90 52.0 85 29.4 170 270 12.5 35 27 8.70 2.30 1.7 11 0.85 5.80
0.80 7.50 0.53 1.33 0.4 190

20-90 58.0 85 28.9 180 220 11.0 33 24 7.80 2.10 1.6 11 0.80 5.40 0.76
7.00 0.51 1.25 0.4 600

10-20 50.5 80 30.7 300 220 11.1 31 26 7.95 1.90 1.6 11 0.86 5.50 0.81
6.90 0.49 1.27 0.4 1000

\<10 35.0 60 36.6 330 290 11.7 32 25 7.30 2.10 1.5 10 0.75 4.70 0.73
6.30 0.55 1.52 0.4 2700

Luna 20 \>125 15.4 40 31.6 100 130 7.20 17 12 3.20 0.90 0.65 4.2 0.37
2.55 0.35 2.30 0.28 1.32 300

22001,35 90-125 15.2 35 26.2 80 120 6.50 16 10 2.80 0.82 0.61 4.3 0.36
2.45 0.34 2.00 0.23 1.20 300

20-90 18.6 50 26.0 80 120 6.60 17 10 2.80 0.85 0.62 4.4 0.38 2.45 0.33
2.15 0.28 1.20 390

10-20 16.9 40 31.7 80 110 6.30 15 11 2.70 0.85 0.62 4.5 0.40 2.40 0.35
2.50 0.31 0.90 1000

\<10 12.3 40 30.7 130 130 7.60 19 12 3.30 0.92 0.66 4.6 0.37 2.40 0.34
2.40 0.38 1.45 1000

Luna 24 Bulk 44.0 150 47.0 40 80 2.40 6.1 5.0 1.70 0.59 0.43 2.7 1.75
0.27 1.20 0.17 0.40 110

24999,6 \>90 43.5 150 50.0 30 70 1.90 4.9 4 1.30 0.55 0.3 2.2 1.40 0.22
1.00 0.11 0.16 140

20-90 43.7 140 50.0 40 80 2.75 7.3 6.0 1.90 0.62 0.5 3.0 2.00 0.29 1.30
0.18 0.38 170

10-20 37.2 130 50.5 80 80 3.40 9.0 6.0 2.20 0.70 0.53 3.2 2.10 0.32 1.70
0.30 0.50 1500

\<10 24.0 90 36.1 100 80 5.30 13 10 2.70 0.80 0.60 3.8 0.36 2.10 0.30
2.00 0.28 0.91 1700

Apollo 15 Bulk 35.1 200 48.9 135 11.3 29 6.3 1.01 1.33 9.7 5.2 0.9 4.9
0.60 1.52 0.46 170

15601

\*The Ni values are suspect of contamination from the Rh-plated Ni
sieves.