Element | Wt % |
| Oxide | Wt % |
O | 46.48 ± 0.13 | | | |
Na | 10.52 ± 0.07 | | Na2O | 14.18 ± 0.10 |
Mg | 0.00 | | MgO | 0.00 |
Al | 1.06 ± 0.02 | | Al2O3 | 2.01 ± 0.04 |
Si | 33.79 ± 0.10 | | SiO2 | 72.29 ± 0.22 |
Cl | 0.02 ± 0.02 | | Cl | 0.02 ± 0.02 |
K | 0.01 ± 0.01 | | K2O | 0.01 ± 0.01 |
Ca | 8.41 ± 0.08 | | CaO | 11.77 ± 0.11 |
Ti | 0.01 ± 0.01 | | TiO2 | 0.02 ± 0.02 |
Mn | 0.01 ± 0.02 | | MnO | 0.01 ± 0.02 |
Fe | 0.01 ± 0.02 | | FeO | 0.01 ± 0.02 |
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Sum | 100.3 ± 0.2 | |
Sum | 100.3 ± 0.3 |
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Prisms 1.5mm x 1.5mm x 3mm. Composition = U. Toronto EPMA.
National Bureau of Standards
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Polished SRM612 in T100-52 mount
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