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Science 8 May 1998:
Vol. 280. no. 5365, p. 797
DOI: 10.1126/science.280.5365.797d
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This Week in Science

Many magnetotactic bacteria produce an intercellular iron sulfide mineral, greigite. Understanding the mineralogy and origin of the greigite and other minerals is important for resolving the origin of these bacteria and their behavior and biomagnetism in general. Pósfai et al. (p. 880) used transmission electron microscope to show that the greigite, which is magnetic, actually forms in magnetotactic bacteria over a few days to weeks from another iron sulfide mineral, mackinawite, which is nonmagnetic.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)