Fig. 3: TEM images and chemical composition of oldhamite.
From: Impact-induced ultra-high melting point oldhamite discovered in Chang’E-6 lunar soil
a, b Bright field (BF) and HAADF images of oldhamite (Oldhamite marked as Oldh); c Multi-element EDS mapping of the area with oldhamite (In EDS mapping: blue is O, green is Fe, light blue is S, and red is Ca.; the line scan position is marked); d EDS line-scan results of the marked area of oldhamite, showing the elemental composition; e Atomic-level HAADF image of oldhamite under TEM (the crystal zone axis and atomic configuration are shown); f FFT image of the atomic phase of oldhamite (the total diffraction is shown); g Crystallographic model of CaS with Fm3m structure(The blue sphere is Ca and the yellow sphere is S).
