Fig. 8From: A new piece of the puzzle: slag and ore analysis to reconstruct the prehispanic smelting technology at the Atacama Desert, ChileA Box and whisker plot summarising the bulk chemical composition of 18 slag samples, by WD-XRF. Note that SiO2 and CuO are the two major components, followed by FeO, Al2O3 and CaO. B Detail of the oxides present under 5 wt%Back to article page