Table T2. Measured major element contents and recommended values for reference samples. (See table notes.)
Element oxide (wt%) |
JB-1b | JB-2 | JB-3 | ||||||
---|---|---|---|---|---|---|---|---|---|
RV (wt%) |
This study (wt%) |
RD (%) |
RV (wt%) |
This study (wt%) |
RD (%) |
RV (wt%) |
This study (wt%) |
RD (%) |
|
SiO2 | 52.23 | 52.26 | 0.07 | 52.96 | 53.02 | 0.12 | 50.71 | 50.62 | –0.18 |
TiO2 | 1.29 | 1.29 | 0.13 | 1.18 | 1.17 | –0.80 | 1.44 | 1.45 | 0.28 |
Al2O3 | 14.69 | 14.51 | –1.27 | 14.56 | 14.50 | –0.38 | 17.16 | 17.10 | –0.41 |
Fe2O3 | 9.22 | 9.18 | –0.42 | 14.17 | 14.11 | –0.41 | 11.81 | 11.82 | 0.07 |
MnO | 0.15 | 0.15 | –3.09 | 0.22 | 0.21 | –1.54 | 0.18 | 0.18 | –0.76 |
MgO | 8.32 | 8.37 | 0.67 | 4.59 | 4.61 | 0.36 | 5.14 | 4.98 | –3.24 |
CaO | 9.81 | 9.81 | –0.00 | 9.77 | 9.78 | 0.10 | 9.76 | 9.72 | –0.43 |
Na2O | 2.69 | 2.65 | –1.28 | 2.03 | 1.99 | –1.72 | 2.69 | 2.71 | 0.76 |
K2O | 1.35 | 1.35 | 0.08 | 0.42 | 0.41 | –0.90 | 0.79 | 0.78 | –2.01 |
P2O5 | 0.26 | 0.27 | 1.38 | 0.10 | 0.10 | –4.67 | 0.30 | 0.30 | –1.42 |
Total: | 100.00 | 100.96 | 100.00 | 101.07 | 100.00 | 100.93 |
Notes: Recommended values (RV) for Geological Survey of Japan reference samples. Relative deviation (RD) values, an estimate of accuracy, are calculated between RV and values from this study. RV of JB-1b from Terashima et al. (1998), RV of JB-2 and JB-3 from Imai et al. (1995).
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