XAS Spectra of Synthesized Glasses bundle released in Announcements Posted March 22, 2022 The XAS Spectra of Synthesized Glasses bundle has been released. These data have been added to the Spectral Library interface. This database includes X-Ray Absorption Near-Edge Structure (XAS) spectral data from a PDART investigation of synthesized glasses (DOI 10.2138/am-2016-5555). In this investigation, multivariate techniques were used to enable accurate XAS measurements of Fe, Cr, Mn, and Ti ratios across the whole spectral region through creation of a broad suite of experimentally homogenized glasses of geological relevance for use as XAS standards. Iron, Cr, Mn, and Ti were analyzed as epoxy-mounted polished glass beads using XAS at the GeoSoilEnviroCARS beamline at the Advanced Photon Source, Argonne National Laboratory using a spot size of ca. 1x1 μm.