Chemical Composition of Meteorites


Manganese / Iron

MnO / Fe2O3(T) vs. Fe2O3(T) + MgO


MnO / Fe2O3(T)


The ratio of manganese to iron does not vary much within different groups of meteorites. The MnO/Fe2O3(T) ratio (or Fe/Mn or FeO/MnO) is not as reliable a test for meteorites as some sources imply, although ratios of <60 are inconsistent with lunaites and >50 are inconsistent with eucrites, for example.



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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.


Last revised:  7 November 2018