Here, we have given an list of the rocks comprising the Earth’s crust by weight.
| By Elements | ||
| S. No. | Name of Element | Percentage (By Weight) |
| 1 | Oxygen | 47% |
| 2 | Silicon | 28% |
| 3 | Aluminium | 8% |
| 4 | Iron | 5% |
| 5 | Calcium | 3.5% |
| 6 | Sodium | 2.5% |
| 7 | Potassium | 2.5% |
| 8 | Magnesium | 2.2% |
| 9 | Titanium | 0.5% |
| 10 | Hydrogen | 0.2% |
| 11 | Carbon | 0.2% |
| 12 | Phosphorus | 0.1% |
| 13 | Sulphur | 0.1% |
| By Oxides | ||
| S. No. | Name of Oxide | Percentage (By Weight) |
| 1 | Silica | 59.1% |
| 2 | Alumina | 15.2% |
| 3 | Iron | 6.8% |
| 4 | Lime | 5.1% |
| 5 | Soda | 3.7% |
| 6 | Magnesia | 3.5% |
| 7 | Potash | 3.1% |
| 8 | Water | 1.3% |
| 9 | Titania | 1.0% |
