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Transmission electron microscopy of presolar grain DOM-77: a) Dark field STEM image. b) RGB STEM-EDS overlay on the STEM image. c) HR-TEM and Fast Fourier Transform (FFT) of Mg-rich olivine region showing lattice spacings of 0.251 nm, 0.225 nm, and 0.205 nm. d) HR-TEM and Ca-rich region with lattice spacings 0.406 nm and 0.367 nm; FFT inset is from the area indicated by the box. Grain outline is indicated on a) and b).
