Table 2. Cation Composition (mol %) for Alteration Layers from CJ2, CJ3, ISG.3, ISG.7, and ISG.9 Samples and Gels CJ2.9.A-7, CJ2.9.A-15, CJ3.7.A-17, ISG.3.B-7, ISG.3.B-15, ISG.7.A-47, and ISG.9.B-45a.
| sample type | sample ID | Al | Ca | Na | Si | Zr | method |
|---|---|---|---|---|---|---|---|
| glass alteration layer | CJ2 | 9.9 | NA | 13.8 | 76.3 | NA | from Gin et. al.30 |
| CJ3 | 10.7 | 7.9 | 4.6 | 76.8 | NA | ||
| ISG.3 | 10 ± 1 | 3 ± 1 | 11 ± 3 | 74 ± 3 | 2 ± 1 | SEM/EDS analysis for glasses featured in Kaspar et. al.21 | |
| ISG.7 | 9 ± 1 | 3 ± 1 | 13 ± 3 | 73 ± 4 | 2 ± 1 | ||
| ISG.9 | 16 ± 4 | 7 ± 2 | 8 ± 4 | 65 ± 5 | 4 ± 1 | ||
| synthetic gels | CJ2.9.A-7 | 11 ± 1 | NA | 27 ± 3 | 62 ± 6 | NA | solution analysis by ICP-OES |
| CJ2.9.A-15 | 11 ± 1 | NA | 22 ± 2 | 67 ± 7 | NA | ||
| CJ3.7.A-17 | 14 ± 1 | 6.4 ± 0.6 | 14 ± 1 | 66 ± 7 | NA | ||
| ISG.3.B-7 | 14 ± 1 | 4.5 ± 0.4 | 20 ± 2 | 60 ± 6 | 1.2 ± 0.2 | ||
| ISG.3.B-15 | 14 ± 1 | 5.4 ± 0.5 | 20 ± 2 | 59 ± 6 | 1.2 ± 0.2 | ||
| ISG.7.A-47 | 10 ± 1 | 5.5 ± 0.6 | 20 ± 2 | 63 ± 6 | 1.5 ± 0.1 | ||
| ISG.9.B-45 | 15 ± 1 | 9.3 ± 0.9 | 15 ± 2 | 58 ± 6 | 2.8 ± 0.3 |
a
Errors are given as 10% for gel samples, and nonapplicable entries are indicated as NA.