| Clay sample | Clay formula | Name | Reference |
| A | Al2Si2O5(OH)4 mixed with Ca5(Si7Al8Fe2) (Fe3.5Al4Mg.1)O20 (OH)4 and silica SiO2 | Kaolinite and nontronite | [6] |
| B1 | Al2Si2O5(OH)4 mixed with SiO2 | Kaolinite and quartz or silica | [6] |
| E | Al2Si2O5(OH)4 mixed with SiO2 | Kaolinite and quartz or silica | [6] |
| F | Al2Si2O5(OH)4 mixed with SiO2 | Kaolinite and quartz | [6] |
| I1 | Ca5(Si7Al8Fe2)(Fe3.5Al4Mg1)O20(OH)4 with SiO2 | Nontronite and quartz | [9] |
| I2 | Ca.5(Si7Al8Fe2)(Fe3.5Al4Mg1)O20(OH)4 with SiO2 | Nontronite and quartz | [9] |
| J | Al2Si2O5(OH)4. | Halloysite | [6] |
| K | (½Ca, Na)0.33(Mg, Fe+2)3(Si, Al)4O10(OH)2·4H2O and Na0.3(Fe.2)Si4O10(OH)24H2O | Montmorillonite and nontronite | [9] |
| L | (½Ca, Na)0.33(Mg, Fe+2)3(Si, Al)4O10(OH)2·4H2O4H2O and Na0.3(Fe2)Si4O10(OH)24H2O | Montmorillonite and nontronite | [9] |