Table T6. Typical inductively coupled plasma-atomic emission spectrometry values of reference standards*.
 
 
 BHVO-2A
BHVO-2B
Average
Certified value
BIR-1A
BIR-1B
Average
Certified value
JB-1AA
JB-1AB
Average
Certified value
Major oxides (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
Total: 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 elements (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 31.9 33.0 32.4 31.8 48 47 47 44 29 29 29 29
Y 30.1 28.9 29.5 27.6 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
Nb 36 39 38 19 39.5 36.0 37.8 0.6 25 29 27 27
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: * = Leg 197 standards. Values in italics indicate that the instrument software crashed during the analysis of these elements. Iron is represented as Fe3+. JB-1a was used as the calibration standard. BDL = below detection limit.