Extended Data Fig. 8: NanoSIMS and SEM-EDX characterization of a presolar silicate grain from Bennu sample OREX-501018-100.
From: The variety and origin of materials accreted by Bennu’s parent asteroid
NanoSIMS ratio and ion images (top images) of a region containing a 17O-rich presolar silicate grain (arrows). The elemental maps and spectra from SEM-EDX analysis confirm the grain is a ferromagnesian silicate.
