Resolution of a Big Argument About Tiny Magnetic Minerals in Martian Meteorite

Details Resolution of a Big Argument About Tiny Magnetic Minerals in Martian Meteorite Resolution of a Big Argument About Tiny Magnetic Minerals in Martian Meteorite

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002psrd.repte..58s&link_type=abstract

Planetary Science Research Discoveries

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Martian Meteorite, Alh 84001, Magnetite, Mineralogy, Crystal Structure

Scientific paper

Tiny grains of magnetite, an iron oxide mineral, from a Martian meteorite are markedly similar in size, shape, and composition to the little oxide magnets used by bacteria on Earth and different from other naturally formed magnetites. Is this good evidence for life on Mars? Or did the Martian magnetite grains form by another process? Our studies reveal that the planes of atoms in the Martian magnetites are aligned with atomic planes in the carbonate in which the magnetites are embedded. This shows that the magnetites formed in the rock and not inside microorganisms.

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