| Element | % |
| Oxide | % |
| k0968-1 |
| |
| |
| O | 16.67 | | | |
|
2mm grains and smaller shards
|
|
National Bureau of Standards
|
| |
| Mg | 0.22 | | MgO | 0.36 |
| P | 0.21 | | P2O5 | 0.48 |
| Ti | 0.160 | | TiO2 | 0.267 |
| Cr | 0.19 | | Cr2O3 | 0.28 |
| Ni | 0.20 | | NiO | 0.25 |
| Ge | 25.93 | | GeO2 | 37.36 |
| Zr | 0.48 | | ZrO2 | 0.65 |
| Ba | 0.46 | | BaO | 0.51 |
| Eu | 0.64 | | Eu2O3 | 0.74 |
| Pb | 54.740 | | PbO | 58.967 |
| Th | 0.12 | | ThO2 | 0.14 |
| U | 0.05 | | UO2 | 0.06 |
|
|
|
| Sum | 100.1 | | Sum | 100.1 |
|