| Oxides % | Glass Sand product | |
| Ref. [20] Jaspar | Ref. [19] WBB | |
| SiO2 | 99.8 | 99.5 |
| Al2O3 | 0.054 | 0.03 |
| Fe2O3 | 0.009 | 0.012 |
| TiO2 | 0.013 | 0.017 |
| Mn3O4 | <0.001 | NA |
| MgO | <0.02 | <0.03 |
| CaO | 0.04 | 0.02 |
| Na2O | <0.05 | <0.05 |
| K2O | 0.01 | 0.00 |
| S | NA | 0.014 |
| Cr* | 12 | 0.00 |
| Cu* | 0.0 | NA |
| Co* | 0.0 | NA |
| Ni* | 0.0 | NA |
| V* | 0.0 | NA |
| LOI | 0.06 | 0.07 |
| Total | 100.06 | 99.65 |