| Element | Weight % | Atomic % |
| C | 14.42 | 21.05 |
| O | 54.59 | 59.83 |
| Al | 11.96 | 7.77 |
| Si | 16.47 | 10.29 |
| K | 0.73 | 0.33 |
| Ca | 0.94 | 0.41 |
| Ti | 0.88 | 0.32 |
| Totals | 100.00 |
|