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10 Most Abundant Elements in the Earth's Crust
Source: CRC Handbook of Chemistry and Physics, 77th Edition
| Element | Abundance percent by weight | Abundance parts per million by weight |
| Oxygen | 46.1% | 461,000 |
| Silicon | 28.2% | 282,000 |
| Aluminum | 8.23% | 82,300 |
| Iron | 5.63% | 56,300 |
| Calcium | 4.15% | 41,500 |
| Sodium | 2.36% | 23,600 |
| Magnesium | 2.33% | 23,300 |
| Potassium | 2.09% | 20,900 |
| Titanium | 0.565% | 5,650 |
| Hydrogen | 0.14% | 1,400 |
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