Initial Reports, Volume 209 Ms 209IR-102 Chapter 2, Table T7. Estimates of accuracy and precision for JY2000 ICP-AES major and trace element analyses. Notes: * = run as an unknown. ** = due to bad data quality, this value (May 26) was not included in the average. All elements were analyzed at 4000-fold dilution. The obtained values were compared to values for international reference rocks and laboratory standards to assess accuracy and precision. Preferred values are from Puchelt et al. (1996) for Sample 147-895D-10W, Remaidi (1993) for ROA-3, Govindaraju (1994) for JP-1, and USGS (2003) for U.S. Geological Survey Reference Materials DTS-1, BIR-1, and BHVO-2. NA = not applicable (no preferred value reported). Standard Date (2003) Major element oxides (wt%): SiO2 TiO2 Al2O3 Fe2O3 MgO MnO CaO Na2O K2O P2O5 Total Trace elements (ppm): Cr Ni Ba Sr V Y Zr Sc Co Cu ROA-3* 15 May 48.93 0.71 8.33 8.85 25.68 0.15 7.61 0.83 <0.01 101.09 1838 1283 90 38 134 28 68 42 15 May 47.8 0.72 8.39 8.85 25.44 0.15 7.86 0.85 <0.01 100.06 1876 1424 31 35 140 29 69 43 26 May 48.37 0.68 8.08 8.42 24.53 0.15 7.55 0.81 0.01 0.03 98.63 2032 1292 7 36 178 14 27 27 55 53 30 May 46 0.72 8.33 8.84 26.41 0.16 7.73 0.84 <0.01 99.03 1901 1145 -3 37 183 13 40 29 70 50 30 May 44.95 0.69 8.12 8.46 25.08 0.15 7.58 0.82 <0.01 95.85 1875 1140 -2 37 181 13 43 29 68 49 1 Jun 46.49 0.68 8.27 8.65 26.82 0.16 7.75 0.83 <0.01 99.65 1952 1169 -1 36 185 14 40 28 72 48 4 Jun 45.52 0.7 8.01 8.66 25.21 0.16 7.85 0.86 <0.01 96.97 1921 1206 28 39 185 14 41 30 72 53 7 Jun 48.68 0.7 8.14 8.65 25.36 0.16 7.79 0.85 <0.01 100.33 1906 1147 4 36 190 14 39 29 68 55 9 Jun 48.01 0.68 8.25 8.77 24.95 0.16 7.8 0.87 0.01 99.5 1803 1036 -4 37 180 14 40 29 50 51 13 Jun 47.48 0.69 8.07 8.52 25.57 0.16 7.7 0.89 0.01 99.09 1893 1262 -11 40 179 15 38 28 53 51 14 Jun 45.86 0.7 8.37 8.05 25.46 0.15 7.7 0.88 <0.01 97.17 1751 1100 -12 38 187 14 40 28 91 56 21 Jun 47.01 0.71 8.23 8.82 25.61 0.15 7.78 0.85 <0.01 99.16 1844 1124 -5 38 181 14 40 29 71 52 Average (wt%): 47.09 0.7 8.22 8.63 25.51 0.16 7.73 0.85 0.01 1883 1194 10 37 175 14 39 29 67 50 Preferred values (wt%): 49.08 0.72 7.89 8.67 24.59 0.15 7.55 0.84 <0.02 1901 1171 1.2 36 192 13 35 28 71 66 Standard deviation (wt%): 1.32 0.01 0.13 0.24 0.15 0.005 0.1 0.02 0 72 105 29 1 18 1 4 1 11 4 Precision (%): 2.8 1.43 1.58 2.78 0.59 3.13 1.29 2.35 3.82 8.79 290 2.7 10.29 7.14 10.26 3.45 16.42 8 Accuracy (%): -4.23 -2.86 4.01 -0.46 3.61 6.25 2.33 1.18 -0.96 1.93 88 2.7 -9.71 7.14 10.26 3.45 -5.97 -32 JP-1 15 May 44.76 <0.01 0.59 8.5 45.69 0.12 0.55 <0.03 <0.01 100.21 2984 2326 5 0 25 7 107 11 30 May 44.48 <0.01 0.68 8.46 46.86 0.12 0.62 0.03 0.01 101.26 3005 2371 12 1 26 1 7 7 115 18 30 May 44.32 <0.01 0.69 8.65 47.3 0.12 0.64 0.03 0.01 101.76 3013 2542 15 1 25 0 7 7 111 18 1 Jun 43.66 <0.01 0.54 8.14 46.33 0.12 0.47 <0.03 <0.01 99.27 3080 2449 -13 0 24 0 8 7 114 18 1 Jun 43.12 <0.01 0.55 8.15 45.66 0.12 0.46 <0.03 <0.01 98.06 2910 2220 19 0 26 0 7 7 114 18 4 Jun 43.7 0.01 0.63 8.31 46.83 0.12 0.57 0.03 <0.01 100.2 2980 2442 13 2 25 -1 8 7 110 18 4 Jun 41.98 0.01 0.82 8.43 44.38 0.12 0.59 0.03 0.01 96.37 3006 2545 11 3 26 0 7 7 113 18 7 Jun 43.68 0.01 0.67 8.54 45.91 0.12 0.58 0.03 0.01 99.55 3130 2521 26 2 27 0 6 7 107 17 7 Jun 44.47 0.01 0.65 8.59 45.11 0.12 0.6 <0.03 0.01 99.56 2945 2461 15 2 25 0 7 7 117 17 9 Jun 44.41 0.01 0.67 8.62 46.35 0.12 0.59 <0.03 <0.01 100.77 3017 2411 23 1 25 0 7 7 115 18 9 Jun 42.55 0.01 0.67 8.37 44.79 0.12 0.6 <0.03 <0.01 97.11 3121 2340 4 0 26 -1 7 7 134 18 13 Jun 44.23 0.01 0.66 8.15 44.39 0.12 0.62 <0.03 0.01 98.18 3102 2595 0 3 25 1 7 7 110 18 13 Jun 43.62 0.01 0.66 8.58 46.28 0.12 0.59 <0.03 <0.01 99.86 3055 2437 -1 3 29 1 7 7 101 18 14 Jun 41.87 0.02 0.65 8.03 44.89 0.11 0.59 <0.03 0.01 96.16 2926 2366 15 2 26 0 6 7 85 17 14 Jun 41.92 0.01 0.66 8.03 46.05 0.12 0.58 0.03 <0.01 97.4 2866 3058 -9 1 26 0 7 7 67 17 21 Jun 43.21 0.01 0.66 8.69 46.12 0.12 0.63 0.03 0.01 99.47 3013 2427 6 2 27 0 8 7 108 18 21 Jun 42.81 0.01 0.66 8.49 45.85 0.12 0.62 <0.03 <0.01 98.56 2983 2548 18 1 26 0 7 7 114 18 Average (wt%): 43.46 0.01 0.65 8.4 45.81 0.12 0.58 0.03 0.01 3008 2474 9 1 26 0 7 7 108 17 Preferred values (wt%): 42.39 0.62 8.34 44.72 0.12 0.56 0.02 <0.01 2970 2460 17 29 6.3 7.07 116 49.1 Standard deviation (wt%): 0.96 0.003 0.06 0.22 0.86 0.002 0.05 0.01 0 73 178 11 1 1 0.4 0.6 0 14 2 Precision (%): 2.21 30 9.23 2.62 1.88 1.67 8.62 63.14 2.46 7.19 116.08 3.85 689.63 8.57 12.96 11.76 Accuracy (%): 2.46 4.62 0.71 2.38 3.45 33.33 1.26 0.57 -88.89 -11.54 10 -1 -7.41 -188.82 DTS-1 26 May 36.17 <0.01 0.2 7.92 43.7 0.11 0.09 <0.03 <0.01 88.19** 3984 2358 -7 1 0 0 6 3 87 22 30 May 41.08 <0.01 0.2 8.66 50.43 0.12 0.15 <0.03 <0.01 100.64 3979 2244 6 1 12 0 1 3 134 18 30 May 39.77 <0.01 0.19 8.38 48.64 0.12 0.14 <0.03 <0.01 97.24 3939 2479 7 1 11 0 4 3 134 18 1 Jun 40.14 <0.01 0.06 8.21 48.74 0.11 0.01 <0.03 <0.01 97.27 3889 2314 55 1 7 0 0 3 127 18 1 Jun 40.67 <0.01 0.06 8.42 50.33 0.12 0.01 <0.03 0.01 99.62 3998 2293 7 0 8 0 3 3 133 18 4 Jun 40 0.01 0.14 8.5 49 0.12 0.13 <0.03 <0.01 97.9 3978 2310 6 1 9 0 2 3 127 18 4 Jun 40.06 0.01 0.14 8.58 48.59 0.12 0.12 <0.03 <0.01 97.62 3967 2337 4 1 8 0 3 3 135 18 7 Jun 39.21 0.01 0.17 8.33 49.22 0.12 0.1 <0.03 <0.01 97.16 4016 2256 -3 1 12 0 3 3 123 17 7 Jun 40.15 0.01 0.17 8.51 48.37 0.12 0.11 <0.03 <0.01 97.44 3863 2392 -12 2 10 0 2 3 134 17 9 Jun 40.59 0.01 0.16 8.66 49.6 0.12 0.12 <0.03 <0.01 99.26 3957 2383 -6 0 9 1 2 3 133 18 9 Jun 40.74 0.01 0.17 8.62 48.05 0.12 0.12 <0.03 <0.01 97.83 4058 2266 -6 0 7 0 3 4 179 18 13 Jun 39.89 0.01 0.17 8.57 48.44 0.12 0.12 <0.03 <0.01 97.32 3888 2197 30 -2 10 0 3 3 137 18 13 Jun 39.87 0.01 0.16 8.66 49.56 0.12 0.11 <0.03 <0.01 98.49 4100 2659 -13 2 8 2 2 3 117 18 14 Jun 39.86 0.02 0.17 8.26 48.31 0.11 0.14 0.03 0.01 96.91 3810 2279 55 -1 10 -1 3 3 84 17 14 Jun 39.73 0.01 0.16 8.23 49.47 0.11 0.15 <0.03 0.01 97.87 3645 2449 2 -3 10 -1 3 3 114 17 21 Jun 40.56 0.01 0.17 8.48 48.04 0.12 0.09 <0.03 <0.01 97.47 4023 2299 -1 -4 11 -1 2 3 130 18 21 Jun 40.41 0.01 0.18 8.46 48.77 0.12 0.09 <0.03 <0.01 98.04 3916 2362 17 -3 12 -1 1 3 130 18 Average (wt%): 40.17 0.01 0.15 8.47 48.97 0.12 0.11 0.03 0.01 3942 2346 8 0 9 0 3 3 127 18 Preferred values (wt%): 40.41 0.01 0.19 8.68 49.59 0.12 0.17 0.02 0.001 3990 2360 1.7 0.32 11 0.04 4 3.5 137 7.1 Standard deviation (wt%): 0.47 0.04 0.15 0.74 0.04 105 109 21 2 3 1 1 1 Precision (%): 1.17 26.67 1.77 1.51 36.36 2.66 4.65 262.5 33.33 33.33 5.56 Accuracy (%): -0.59 -21.05 -2.42 -1.25 -35.29 50 -1.2 -0.59 370.59 -18.18 -25 -14.29 -7.3 153.52 147-895D-10W 15 May 43.92 0.35 3.41 9.86 36.05 0.13 3.52 0.45 0.07 97.76 2415 2846 33 236 89 16 98 26 15 May 45.19 0.4 3.65 9.82 36.07 0.13 3.69 0.49 0.04 99.48 2234 2393 -9 256 101 16 94 28 Average (wt%): 44.56 0.38 3.53 9.84 36.06 0.13 3.61 0.47 0.06 98.64 2325 2620 12 246 95 27 Preferred values (wt%): 43.95 0.49 3.99 12.02 34.88 0.17 3.83 0.56 0.06 0.06 99.95 2162 1635 10 184 160 15 86 30 Standard deviation (wt%): 0.9 0.04 0.17 0.03 0.01 0.12 0.03 0.02 128 320 29 14 8 1 Precision (%): 2.02 10.53 4.82 0.3 0.03 3.32 6.38 33.33 5.51 12.21 246.95 5.69 8.42 3.7 Accuracy (%): 1.39 -22.45 -11.53 -18.14 3.38 -23.53 -5.74 -16.07 7.54 60.24 18.41 33.7 -40.63 -10 BIR-1* 26 May 49.32 0.93 15.01 11.87 9.53 0.17 13.1 1.75 0.03 0.07 101.78 384 181 62 107 308 16 11 43 45 65 26 May 48.46 1.01 16.28 11.48 9.65 0.17 13.37 1.93 0.03 0.06 102.44 452 195 1 110 325 17 10 46 47 69 30 May 48 0.94 15.59 11.34 10.06 0.18 13.31 1.8 0.02 101.24 387 203 17 108 314 11 18 44 53 61 1 Jun 47.84 0.93 15.68 11.42 9.81 0.17 13.41 1.81 0.02 101.09 370 174 -18 106 313 16 18 43 55 58 4 Jun 47.2 0.96 15.31 11.45 9.52 0.17 13.19 1.79 0.02 99.61 389 187 23 106 324 16 16 45 56 64 7 Jun 47.38 0.94 15.67 11.18 9.63 0.17 12.93 1.79 0.02 99.71 360 188 9 99 319 16 17 44 50 68 9 Jun 46.59 0.93 15.53 11.07 9.51 0.18 13.25 1.82 0.04 98.92 353 197 4 105 312 16 18 44 65 63 13 Jun 46.85 0.94 15.32 11.37 9.63 0.17 12.74 1.87 0.02 98.91 352 179 2 109 308 17 16 45 47 64 14 Jun 45.57 0.92 15.64 10.94 9.91 0.17 13.01 1.83 0.02 98.01 341 288 -11 107 311 15 16 44 47 70 21 Jun 47.67 0.94 15.57 11.2 9.66 0.17 13.09 1.82 0.03 100.15 364 172 1 108 319 16 15 45 54 63 Average (wt%): 48.59 0.96 15.63 11.56 9.75 0.17 13.26 1.83 0.03 0.07 408 193 27 108 316 15 13 65 Preferred values (wt%): 47.96 0.96 15.5 11.3 9.7 0.18 13.3 1.82 0.03 0.02 370 170 6 110 310 16 18 44 52 125 Standard deviation (wt%): 0.67 0.04 0.64 0.27 0.28 0.01 0.14 0.09 0.01 0.007 38 11 32 2 9 3 4 4 Precision (%): 1.38 4.17 4.09 2.34 2.87 5.88 1.06 4.92 33.33 10 9.31 5.7 118.52 1.85 2.85 20 30.77 6.15 Accuracy (%): 1.31 0.84 2.3 0.52 -5.56 -0.3 0.55 250 10.27 13.53 350 -1.82 1.94 -6.25 -27.78 1.94 BHVO-2 15 May 49.86 2.73 13.2 12.26 7.04 0.17 11.29 2.21 0.52 99.28 290 79 130 389 320 31 62 133 26 May 49.81 2.73 13.33 11.97 6.96 0.17 10.9 2.2 0.52 0.25 98.84 284 122 169 390 26 130 311 31 51 148 30 May 50.27 2.73 13.45 12.22 7.38 0.17 11.48 2.24 0.52 100.46 271 142 130 390 312 26 172 31 58 148 1 Jun 50.16 2.73 13.52 12.28 7.3 0.17 11.48 2.26 0.52 100.42 278 114 115 390 310 26 172 32 59 148 4 Jun 49.92 2.74 13.44 12.48 7.25 0.17 11.51 2.23 0.52 100.26 279 116 130 391 315 26 172 32 62 148 7 Jun 49.38 2.73 13.4 12.31 7.38 0.17 11.42 2.22 0.52 99.53 267 132 129 391 305 26 172 32 64 149 9 Jun 49.15 2.73 13.45 12.31 7.21 0.17 11.53 2.21 0.52 99.28 254 230 127 389 314 26 172 32 63 149 13 Jun 49.44 2.74 13.51 12.27 7.26 0.17 11.44 2.18 0.52 99.53 262 150 123 390 312 26 172 32 58 148 14 Jun 48.86 2.74 13.64 11.82 7.25 0.16 11.43 2.23 0.52 98.65 268 195 95 391 314 25 172 31 68 166 21 Jun 50.06 2.73 13.44 12.23 7.16 0.17 11.46 2.24 0.52 100.01 270 117 130 390 311 26 172 32 63 148 Average (wt%): 49.69 2.73 13.44 12.22 7.22 0.17 11.39 2.22 0.52 0.25 272 140 128 390 284 37 187 149 Preferred values (wt%): 49.9 2.73 13.5 12.3 7.23 0.17 11.4 2.22 0.52 0.27 280 119 130 389 317 26 172 32 45 127 Standard deviation (wt%): 0.46 0.005 0.12 0.19 0.14 0.003 0.19 0.02 0 11 44 18 1 91 35 46 8 Precision (%): 0.93 0.18 0.89 1.55 1.94 1.76 1.67 0.9 4.04 31.43 14.06 0.26 32.04 94.59 24.6 5.37 Accuracy (%): -0.42 -0.44 -0.65 -0.14 -0.09 -7.41 -2.86 17.65 -1.54 0.26 -10.41 42.31 8.72 17.32