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Chemical Composition of Meteorites

 

Sodium and Potassium

Na2O and K2O vs. Fe2O3(T) + MgO

 



Na2O

 

Most terrestrial rocks are richer in Na2O than any meteorite. Rocks with >2% Na2O are probably not meteorites.

 

K2O

Sodium and potassium are both alkali elements, and all alkali elements are in low concentrations in meteorites compared to most terrestrial rocks. Rocks with greater than 0.6% K2O are probably not meteorites.

 

 

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.


e-mailkorotev@wustl.edu

Last revised:  7 November 2018