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Earth, Planets and Space
Fig. 2 | Earth, Planets and Space

Fig. 2

From: Aqueous alteration without initial water: possibility of organic-induced hydration of anhydrous silicates in meteorite parent bodies

Fig. 2

Microstructure of initial olivine grains (a, b), olivine grains after the experiment (grain A: c, d; grain B: e, f), and an FIB section from grain B (g, h). a, b Typical olivine grains used as the starting materials. These grains had a smooth surface with smaller olivine particles (~1 μm) attached to them. c, d Grain A was partially covered with precipitation features. Conical etch pits were also detected. e, f Grain B was entirely covered with polyhedral etch pits. Irregularly shaped carbonaceous materials (1–10 μm, white particles) were attached to the surface. g, h An FIB section obtained from grain B (red broken area)

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