Fig. 7

Pseudo-bulk As and Ni concentrations of the sections (black), re-normalised to 100 wt.% after exclusion of eventual quartz inclusions and leftovers of polishing powder (Additional file 1 for raw values). Other polymetallic copper alloys of the Chalcolithic Southern Levant in grey [27]. Concentrations of 0 wt.% denote elements absent in the pseudo-bulk compositions of the sections