Extended Data Fig. 4: Surface features of sodium carbonates and extracted FIB section of C0369-113003.
From: Sodium carbonates on Ryugu as evidence of highly saline water in the outer Solar System
(a, b) BSE image and distribution of sodium on the grain surface. The sodium carbonate vein is indicated by arrows. (c) SE image of the sodium carbonates showing a flat surface. (d) SE image of frothy phyllosilicates adjacent to the sodium carbonate vein, indicating space weathering. (e) ADF-STEM image of a FIB section extracted from a dashed line in (c). Arrows indicate sodium carbonates. (f) SAED pattern from a circular area in (e). Na-car: sodium carbonates; Phy: phyllosilicate matrix; Pt-c: platinum protective coat.
