Fig. 9From: Unravelling the glass trade bead sequence from Magoro Hill, South Africa: separating pre-seventeenth-century Asian imports from later European counterpartsTernary diagram of all the glass beads analysed with XRF, plotting the aluminium content (Al high for Indo-Pacific series), magnesium plus potassium content (indicative of plant ash glass) and calcium content against each other. The type of bead indicated is after reclassificationBack to article page