Chemical Composition of Meteorites

Ni vs. Fe2O3(T) + MgO


All chondrites and some achondrites (top) have very much higher concentrations of Ni (also Co, Ir, Au, and some other rare elements) than nearly any terrestrial rock. Some of the rarer types of meteorites (lunar, martian, eucrites; bottom), however, do not have high concentrations of Ni. High-Ni terrestrial rocks tend to be ultramafic rocks like dunites, peridotites, pyroxenites, and serpentinites.

See Notes, Caveats, and References


Plots for

| SiO2 | Al2O3, CaO, & CaO/Al2O3 | MgO/Fe2O3 | Fe2O3/MnO | Na2O & K2O |

| Cr | Ni | La |



Back to: Chemical Composition of Meteorites

Prepared by:

Randy L. Korotev

Department of Earth and Planetary Sciences
Washington University in St. Louis

Please don't contact me about the meteorite you think you’ve found until you read this and this.