| Oil shale samples | Organic matter (%) | Mineral matter (%) | References |
| Fushun | 27.8 | 72.2 | [1] |
| Maoming | 28.1 | 71.9 | [1] |
| Dotternhausen | 8.8 | 91.9 | [24] |
| Kukersite | 50.5 | 49.5 | [15] |
| Babouri-Figuil | 36.25 | 63.75 | - |