Astromat

This dataset contains near- to mid-infrared biconical reflectance spectra of individual particles separated from aggregate sample OREX-803124-0, returned from asteroid Bennu by the OSIRIS-REx mission. Spectra were acquired with a Bruker LUMOS infrared microscope under a purged, dry-air environment. Each spectrum is delivered as a table of wavenumber and reflectance values, accompanied by a reflected-light image recording the location of the measurement on the particle. The purpose of the dataset is to characterize the distribution of hydrated phases, carbonates, phosphates, and organic material among individual particles, and to constrain the aqueous alteration and space weathering history of the sample.