Table T7. Typical values for USGS standards analyzed by ICP-AES, Leg 197.
BHVO-2 BIR-1 JB-1A
A
B
Average
Certified value
A
B
Average
Certified value
A
B
Average
Certified value
Element oxide (wt%):










SiO2 49.15 49.39 49.27 49.85 47.11 47.18 47.14 47.95 52.24 52.08 52.16 52.16
TiO2 2.79 2.77 2.78 2.69 0.96 0.96 0.96 0.96 1.3 1.3 1.3 1.3
Al2O3 13.37 13.03 13.20 13.85 15.7 15.5 15.6 15.5 14.51 14.51 14.51 14.51
Fe2O3 12.35 12.55 12.45 12.23 12.2 11.9 12.1 11.3 8.7 9.5 9.1 9.1
MnO 0.16 0.17 0.16 0.17 0.18 0.18 0.18 0.175 0.14 0.16 0.15 0.15
MgO 7.07 6.97 7.02 7.31 9.7 9.4 9.5 9.7 7.87 7.63 7.75 7.75
CaO 11.18 10.99 11.09 11.33 13.2 13.0 13.1 13.3 9.29 9.17 9.23 9.23
Na2O 2.16 0.73 1.44 2.29 1.82 1.72 1.77 1.82 2.74 2.63 2.68 2.74
K2O 0.55 -0.01 0.27 0.54 BDL BDL BDL 0.03 1.46 1.45 1.46 1.46
P2O5 0.28 0.28 0.28 0.27 BDL BDL BDL 0.021 0.26 0.26 0.26 0.26
Totals: 99.06 96.87 97.96 100.53 100.86 99.84 100.35 100.756 98.53 98.67 98.60 98.66
Trace element (ppm):










Ni 121 120 120 121 189 184 187 166 143 137 140 140
Cr 266 254 260 289 407 393 400 382 401 429 415 415
V 317 343 330 317 375 365 370 313 198 242 220 220
Zr 180 192 186 179 12 13 13 15.5 144 148 146 146
Sc 32 33 32 32 48 47 47 44 29 29 29 29
Y 30 29 30 28 13 16 15 16 28 20 24 24
Sr 382 389 385 403 107 107 107 108 441 445 443 443
Ba 133 135 134 139 5 6 6 7 565 429 497 497
Co 56 55 55 45 50 52 51 52 38.2 40.8 39.5 39.5
Cu 225 224 225 136 176 181 179 126 70.1 40.9 55.5 55.5
Zn 108 110 109 105 79 67 73 71 76 88 82 82

Notes: Values in italics indicate that the machine software crashed during the analysis of these elements. Iron is represented as Fe3+. BHVO-2 was used as the calibration standard. BDL = below detection limit.