Table 2 SEM observation and XRD results of JAXA-DD grains
From: Variations of the surface characteristics of Ryugu returned samples
Characteristic | Dark | Glossy | Bright | White | |||||
|---|---|---|---|---|---|---|---|---|---|
Sample ID | A0042 | A0042 backside | C0041 backside | C0094 | C0094 backside | A0017 | A0017 backside | C0041 | |
Pyrrhotite | smooth | â—‹ | â—‹ | â—‹ | â—‹ | â—‹ | â—‹ | â—‹ | â—‹ |
modified | – | – | – | ○ | ○ | ○ | ○ | – | |
Magnetite | â—‹ | â—‹ | â—‹ | â—‹ | â—‹ | â—‹ | â—‹ | â—‹ | |
Carbonate | dolomite | â—‹ | â—‹ | â—‹ | â—‹ | â—‹ | â—‹ | â—‹ | â—‹ |
Mg–Fe carbonate | – | – | – | – | – | – | – | ○ | |
Circular structures | â—‹ | â—‹ | â—‹ | â—‹ | â—‹ | â—‹ | â—‹ | â—‹ | |
Melt-droplet | – | – | – | ○ | ○ | ○ | ○ | – | |
Smooth layer | – | – | – | ○ | ○ | ○ | ○ | – | |
Frothy layer | – | – | – | – | – | ○ | ○ | – | |