Some bacteria form intracellular nanometer-scale crystals of greigite (Fe3S4) that cause the bacteria to be oriented in magnetic fields. Transmission electron microscope observations showed that ferrimagnetic greigite in these bacteria forms from nonmagnetic mackinawite (tetragonal FeS) and possibly from cubic FeS. These precursors apparently transform into greigite by rearrangement of iron atoms over a period of days to weeks. Neither pyrrhotite nor pyrite was found. These results have implications for the interpretation of the presence of pyrrhotite and greigite in the martian meteorite ALH84001.
Science (New York, N.Y.). 1998 May 8;280(5365):880-3. doi: 10.1126/science.280.5365.880 Q145.82025
Reaction sequence of iron sulfide minerals in bacteria and their use as biomarkers
铁的硫化矿物在细菌作用下的反应序列及其作为生物标志物的应用 翻译改进
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DOI: 10.1126/science.280.5365.880 PMID: 9572727
摘要 Ai翻译
Keywords：iron sulfide minerals; bacteria; biomarkers
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