| Minerals (%) | RahinSho Clay | Major Porter Clay | Wereng Camp Clay | Kwi Clay | Nara-guta Clay | Reference clays | |||
| *Ibadan Clay | *Kan-kara Clay | **China Clay | ^NAFCON Recommended | ||||||
| Kaolinite | 56.24 | 41.40 | 98.11 | 87.99 | - | 91 | 96 | 85 | 85 |
| Dickite | - | - | - | - | 17.93 | - | - | - | - |
| Illite | - | - | - | - | - | 3 | 3 | 15 | 3 |
| Quartz | 39.70 | 30.45 | - | 12.01 | 82.07 | 6 | 2 | Tr | 4 |
| Muscovite | - | 28.16 | - | - | - | - | - | - | - |
| Felspar | - | - | - | - | - | - | - | - | 2 |
| Others | 4.05 | - | 1.89 | - | - | - | - | - | 8 |
| Total | 99.99 | 100.01 | 100.00 | 100.00 | 100.00 | 100.00 | 99.00 | 100 | 98 |