Figure 9
From: Shedding New Light on Ancient Glass Beads by Synchrotron, SEM-EDS, and Raman Spectroscopy Techniques
The black sample, BLALL5-1, shows a smooth and clean surface, spectra 16 and 24 reflected the soda-alumina glass matrix. The sample is influenced by Fe observed in the greater abundance in the mapping than for the other coloured glasses.
