| Clay content (%) | Predominant clay minerals | OC content (%) | Soil type |
| 60 | Smectite | 2 | Calcareous Grumusol (Calcic Vertisol) |
| 39 | Kaolinite and smectite | 1 - 2 | Alluvial soil (Fluvents) |
| 32 | Allophane | 13 - 14 | Humic Allophane soil (Typic Dystrandept) |
| 6 | Smectite, less vermiculite | 6 | Orthic Ferro-Humic Podzol (Orthic Spodosol) |
| 17 | Chlorite (vermiculite, illite) | 11 | Humic Eluviated Gleysol (Humaquepts) |
| 3 - 15 | Illite (vermiculite) | 4 - 16 | Typic Ustochrept, Udic Haplustalf, Dystric Cryochrept, Typic Cryorthod, Typic Dystrochrept, Haplic Cryohumod |
| 8 | Smectite | 15 | Xeralfic Haplargid |
| 17 - 18 | Kaolinite | 2 - 3 | Merredin Sandy Loam (Ustalfs) |
| 8 - 45 | Chlorite-mixed layers | 1 - 20 | Haplohumult, Argixeroll, Durargid, Andept |
| 45 | Smectite | 2 | Pelloxerert |
| 17 | Kaolinite and illite | 2 - 6 | Rhodoxeralf |
| 45 | Smectite and illite | 7 - 9 | Haploboroll |
| 46 | Palygorskite | 3 - 7 | Calciaquoll |
| 69 | Smectite | 1 - 2 | Dystric Gleysol (Tropaquepts) |
| 8 | Illite, less smectite | 4 - 6 | Orthic Greyzem (Orthic Mollisol) |
| 9 | Chlorite-mixed layers | 8 - 11 | Dystric Cambisol (Dystropepts) |
| 9 | Illite (quartz, feldspars, smectite) | 8 - 9 | Typical Hapludalf |
| 2 | Smectite | 6 - 17 | Haplic Albeluvisol (Typic Haplocryalfs) |
| 28 | Smectite/vermiculite | 2 - 5 | Typic Paludalf, Typic Hapludalf |