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Chemical Composition of Meteorites

 

Lanthanum and Other “Incompatible Elements”

La vs. Fe2O3(T) + MgO

La

Lanthanum is one of many chemical elements that geochemists call “incompatible elements.” Others that commonly appear in reports of rock analyses are Y, Zr, Nb, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, Th, and U. Incompatible elements tend to be in higher concentrations in Earth rocks than in meteorites. Among meteorites, only some from the Moon have concentrations in the range of typical terrestrial igneous rocks.

 

Back to Chemical Composition of Meteorites

 

see also Rare Earth Elements (REE) in Lunar 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-mail
korotev@wustl.edu

Last revised: 16-October-2017