Element | Wt % |
| Oxide | Wt % |
O | 45.040 ± 0.120 | | | |
Na | 10.262 ± 0.067 | | Na2O | 13.833 ± 0.090 |
Mg | 0.040 ± 0.007 | | MgO | 0.067 ± 0.012 |
Al | 1.025 ± 0.014 | | Al2O3 | 1.936 ± 0.027 |
Si | 32.671 ± 0.100 | | SiO2 | 69.895 ± 0.214 |
Cl | 0.047 ± 0.016 | | Cl | 0.047 ± 0.016 |
K | 0.051 ± 0.016 | | K2O | 0.061 ± 0.019 |
Ca | 8.126 ± 0.059 | | CaO | 11.370 ± 0.083 |
Ti | 0.042 ± 0.015 | | TiO2 | 0.070 ± 0.025 |
Mn | 0.041 ± 0.019 | | MnO | 0.053 ± 0.025 |
Fe | 0.046 ± 0.018 | | FeO | 0.059 ± 0.023 |
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Sum | 97.4 ± 0.2 | |
Sum | 97.4 ± 0.3 |
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1.6mm (approx) cubes. Composition = U. Toronto EPMA.
National Bureau of Standards
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Polished SRM610 in T100-52 mount
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