Mineralogy and crystallography of some Itokawa particles returned by the Hayabusa asteroidal sample return mission

Earth, Planets and Space

Table 1 Summary of the samples analyzed

Sample name	RA-QD02-0036	RA-QD02-0041	RA-QD02-0049-2	RA-QD02-0100	RA-QD02-0133-1	RA-QD02-0138	RA-QD02-0179
Size (μm)	47.4	88.6	149.4	29	53	49	50
PE or new?	PE	PE	PE	New	New	New	New
Sample form	Polished section	Polished section	Mounted on glass fiber	Polished section	Polished section	Polished section	Polished section
Methods	OM, SEM, EPMA, SR-XRD, and Raman	OM, SEM, EPMA, SR-XRD, and Raman	SR-XRD	OM, SEM, EPMA, and SR-XANES	OM, SEM, EPMA, SR-XANES, and Raman	OM, SEM, and EPMA	OM, SEM, and EPMA
Shock stage	S2	S2	-	S2	S2	S2	S2
Present phases	Olivine, plagioclase	Olivine, plagioclase	Olivine	Plagioclase, olivine	Olivine, plagioclase, (Ca phosphate)	Olivine, (chromite)	Olivine

PE, studied by the preliminary examination team; OM, optical microscopy; SEM, scanning electron microscopy; EPMA, electron probe micro-analyzer; SR-XRD, synchrotron radiation X-ray diffraction; Raman, Raman spectrometry; SR-XANES, synchrotron radiation iron X-ray absorption near-edge structure.