Supplementary material for the article "Asteroid Itokawa … but when and how did it form exactly?"

The Supplementary material includes a Supplementary Text describing in details the Scanning electron microscopy methods, the Simultaneous electron backscatter diffraction and energy dispersive spectroscopy mapping and the Backscattered electron and secondary electron imaging. It also includes a caption for the supplementary datasets. Full 40Ar/39Ar dataset for each of the three particles are provided in Supplementary Datasets 1-3 as Excel files.