Source: McDonough W.F., Sun S.-s. The composition of the Earth, Chemical Geology 120 (1995) 223-253.
| oxide | units | value |
|---|---|---|
| SiO2 | pt | 45 |
| TiO2 | pt | 0.201 |
| Al2O3 | pt | 4.45 |
| Cr2O3 | pt | 0.384 |
| MnO | pt | 0.135 |
| FeO | pt | 8.05 |
| NiO | pt | 0.25 |
| MgO | pt | 37.8 |
| CaO | pt | 3.55 |
| Na2O | pt | 0.36 |
| K2O | pt | 0.029 |
| P2O5 | pt | 0.021 |