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, um 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 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.