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Planetary science

A chunk of ancient Mars

Analysis of a meteorite found in northwest Africa, prosaically named NWA 7533, indicates that it is the first sample of the regolith, or 'soil', of Mars, and is derived from the earliest Martian igneous crust yet identified. See Letter p.513

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Figure 1: A piece of the NWA 7533 meterorite found in northwest Africa.



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Correspondence to Harry Y. McSween.

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McSween, H. A chunk of ancient Mars. Nature 503, 473–474 (2013).

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