|
Element
|
Published
value |
Measured
value (N = 6) |
|---|---|---|
| Major element oxide (wt%): | ||
| SiO2 | 6.84 ± 0.08 | 6.78 ± 0.24 |
| Al2O3 | 1.30 ± 0.03 | 1.28 ± 0.02 |
| TiO2 | 0.070 ± 0.010 | 0.069 ± 0.002 |
| Fe2O3 | 0.55 ± 0.03 | 0.56 ± 0.02 |
| MnO | 0.025 ± 0.005 | 0.021 ± 0.001 |
| CaO | 50.3 ± 0.3 | 50.4 ± 1.0 |
| MgO | 0.42 ± 0.04 | 0.39 ± 0.01 |
| Na2O | 0.020 ± 0.010 | 0.020 ± 0.001 |
| K2O | 0.28 ± 0.01 | 0.29 ± 0.01 |
| P2O5 | 0.04 ± 0.01 | 0.038 ± 0.001 |
| Trace element (ppm): | ||
| Ba | NR | 56.3 ± 1.5 |
| Sr | 254 ± 42 | 257 ± 8 |
| Cr | NR | 11.7 ± 0.3 |
| Ni | NR | 8.91 ± 0.45 |
| Sc | NR | 1.47 ± 0.04 |
| V | NR | 10.4 ± 0.4 |
| Zr | NR | 35.1 ± 1.4 |
Notes: Error reported as 1
. NR = not reported.