Element-Element Correlations Among Martian Meteorite Bulk Compositions: Peculiarities Explained(?) By Mixing, with Implications for the Composition of Mars

Correlations of elements abundances among the Martian meteorites have been used to infer the bulk composition of the Martian mantle, and thence the broad petrogenesis of the planet. It has been assumed that the correlations represent igneous fractionations. However, the correlations are also consistent with mixing, broadly similar to that inferred from radio-isotope data. If the correlations represent mixing of geochemical components, it is not clear that they represent Mars' mantle or bulk composition.