Table T2. Typical values for USGS standards analyzed by ICP-AES during Leg 200.
BHVO-2
BCR-2
BIR-1
14 Jan 2002
17 Jan 2002
Average
Certified value
14 Jan 2002
17 Jan 2002
Average
Certified value
14 Jan 2002
17 Jan 2002
Average
Certified value
Major element oxide (wt%):
SiO2 49.42 49.35 49.39 49.85 54.23 54.31 54.27 54.10 48.05 48.07 48.06 47.77
TiO2 2.77 2.66 2.72 2.69 2.20 2.31 2.26 2.26 0.99 1.01 1.00 0.96
Al2O3 13.58 13.53 13.56 13.85 12.82 13.39 13.1 13.50 15.84 15.45 15.65 15.35
Fe2O3 12.35 12.19 12.27 12.23 13.79 13.86 13.8 13.80 11.29 11.34 11.32 11.26
MnO 0.19 0.19 0.19 0.17 0.23 0.23 0.23 0.24 0.20 0.20 0.20 0.171
MgO 7.17 7.20 7.19 7.31 3.56 3.57 3.57 3.59 9.74 9.71 9.72 9.68
CaO 11.35 11.18 11.27 11.33 7.09 7.22 7.16 7.12 13.39 13.24 13.32 13.24
Na2O 2.22 2.23 2.23 2.29 3.11 3.13 3.12 3.16 1.84 1.80 1.82 1.75
K2O 0.55 0.54 0.55 0.54 1.78 1.82 1.80 1.79 0.010 0.015 0.01 0.027
P2O5 0.27 0.26 0.27 0.27 0.35 0.35 0.35 0.35 0.047 0.055 0.05 0.046
Totals: 99.87 99.33 99.64 100.53 99.16 100.19 99.66 99.91 101.40 100.89 101.17 100.25
Trace element (ppm):
Ni 113 98 106 119 23 23 23 20 168 150 159 166
Cr 275 281 278 280 16 13 15 18 386 382 384 382
V 316 315 316 317 416 416 416 416 314 316 315 313
Zr 169 173 171 172 191 187 189 188 13 16 15 16
Sc 32 34 33 32 34 33 34 33 44 41 43 44
Y 26 27 27 26 37 37 37 37 16 16 16 16
Sr 396 393 395 389 338 346 342 346 109 110 110 108
Ba 129 134 132 130 683 682 683 683 8 10 9 7

Notes: Iron is represented as Fe3+. Certified values were used as concentrations in calculating regressions.