Dark and clear silicate glasses formed during an iron age vitrification event ≈ 1500 years ago at the Broborg hillfort near Uppsala, Sweden have been analyzed at MCI highlighting lab capabilities using correlated SEM-EDS and micro-XRF mapping collected in an SEM at the cm scale with microscale resolution. Correlated µXRF and electron beam-induced energy dispersive spectrometry (EDS) X-ray maps were both collected via stage-scanning at constant velocity. EDS beam scan maps were correlated with multispectral cathodoluminescence (CL) imaging and further co-located quantitative EDS and µXRF point analyses. Differences between calculated melt viscosities for the glass compositions are consistent with field and laboratory observations. Couples large area EDS and µXRF imaging shows significant promise for informed selection of higher spatial resolution and higher sensitivity follow-up studies, e.g., those performed using synchrotron analysis.

Dark and clear silicate archaeologic glasses were analyzed using SEM with micro-XRF (using an Rh beam), this analysis along with EDS maps and CL imaging provided information for multivariate statistical analysis to measure area fractions of high variance components