EDXRF Analysis
EDXRF analysis was carried out on the majority of the faceted samples used in this investigation. In all instances Al and Mg dominated the resulting spectrum with strong intensities for Fe and Co. Zn and Ga were also revealed to be present indicating a natural (rather than synthetic, (Muhlmeister, Koivula et al. 1993)) origin for the original material (Figure 30). For detailed chemistry see LA-ICP-MS analysis later.