Table 2.
Elements present in amounts over 1% in the soils under analysis.
| Soil | Chemical components (%) | |||||
|---|---|---|---|---|---|---|
| SiO2 | Al2O3 | Fe2O3 | TiO2 | SO3 | Others | |
| Sandy | 62.80 | 30.03 | 3.47 | 1.93 | 1.39 | 0.38 |
| Clayey | 44.19 | 32.84 | 16.74 | 3.49 | 1.71 | 1.03 |
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