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Journal Article

Controlled biomineralization of magnetite (Fe3O4) by Magnetospirillum gryphiswaldense

Authors

Moisescu,  C.
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Bonneville,  S.
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Tobler,  D.
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Ardelean,  I.
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/persons/resource/benning

Benning,  Liane G.
0 Pre-GFZ, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

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Citation

Moisescu, C., Bonneville, S., Tobler, D., Ardelean, I., Benning, L. G. (2008): Controlled biomineralization of magnetite (Fe3O4) by Magnetospirillum gryphiswaldense. - Mineralogical Magazine, 72, 1, 333-336.
https://doi.org/10.1180/minmag.2008.072.1.333


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_806923
Abstract
Results from a study of the chemical composition and micro-structural characteristics of bacterial magnetosomes extracted from the magnetotactic bacterial strain Magnetospirillum gryphiswaldense are presented here. Using high-resolution transmission electron microscopy combined with selected-area electron diffraction and energy dispersive X-ray microanalysis, biogenic magnetite particles isolated from mature cultures were analysed for variations in crystallinity and particle size, as welt as chain character and length. The analysed crystals showed a narrow size range (similar to 14-67 nm) with an average diameter of 46 +/- 6.8 nm, cuboctahedral morphologies and typical Gamma type crystal size distributions. The magnetite particles exhibited a high chemical purity (exclusively Fe3O4) and the majority fall within the single-magnetic-domain range.