Material/Twenty most abundant elements in Earth's crust
From AdCiv
Approx figures for the 20 most abundant elements in Earth's crust:
| Element | % mass |
|---|---|
Oxygen  |
46.71 |
| Silicon |
27.69 |
| Aluminum |
8.07 |
| Iron |
5.05 |
| Calcium |
3.65 |
| Sodium |
2.75 |
| Potassium |
2.58 |
| Magnesium |
2.08 |
| Titanium |
0.62 |
| Hydrogen |
0.14 |
| Phosphorus |
0.13 |
| Carbon |
0.09 |
| Manganese |
0.09 |
| Sulfur |
0.05 |
| Barium |
0.05 |
| Chlorine |
0.05 |
| Chromium |
0.04 |
| Fluorine |
0.03 |
| Zirconium |
0.03 |
| Nickel |
0.02 |
Figures from [1]
Figures rounded to two decimal places
Also need to have a list based on ease of extraction and energy required
Notable missing from top 20:
- Copper .
Carbon might replace copper for many electrical (and thermal) conduction applications - see [2], [3] and carbon nanotube for further information
