Fig. 2: Microstructures of polycrystalline ahrensite and submicroscopic metallic iron. | Communications Earth & Environment

Fig. 2: Microstructures of polycrystalline ahrensite and submicroscopic metallic iron.

From: Abundant high-pressure minerals and submicroscopic metallic iron discovered in a shocked lunar meteorite

Fig. 2: Microstructures of polycrystalline ahrensite and submicroscopic metallic iron.

a Enlarged BSE image of ahrensite near the melt vein. The blue line indicates the location from which Foil 1 was extracted. Abundant submicroscopic metallic iron can be observed at the transition between ahrensite and fayalite. b HAADF image showing ahrensite, defect-rich fayalite, and the transition zone between fayalite and ahrensite. c HAADF image of the transition zone showing metallic iron coexisting with ahrensite. d, e HAADF and corresponding EDS maps showing that the nanoparticles are Fe-rich and O-poor. f HRTEM image of ahrensite and its corresponding FFT pattern. g HRTEM image of metallic iron and its corresponding FFT pattern. Ahr ahrensite, Fa fayalite. White lines indicate the boundaries of the melt veins.

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