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Engineering ToolBox > Earth or Soil - Weight and Composition
| Type of Soil | Approximate Weight | |
| (lb/ft3) | (kg/m3) | |
| Loose earth | 75 | 1200 |
| Rammed earth | 100 | 1600 |
| Element | Approximate Content (%) |
| Aluminum | 6 - 10 |
| Calcium | 1 - 7 |
| Iron | 2 - 10 |
| Magnesium | 0.1 - 3 |
| Oxygen | 44 - 49 |
| Potassium | 1.5 - 3 |
| Silicon | 22 - 36 |
| Sodium | 2.4 - 2.5 |