Published online by Cambridge University Press: 20 January 2017
Weymouth's X-ray diffraction analysis of prehistoric pottery necessitates a reevaluation of what diffraction peaks and "groupings" of peaks mean culturally. Specifically, archaeologists need to clarify what they mean by "temper" and what "temper" means behaviorally. X-ray diffraction will not screen out naturally occurring inclusions in the clay from those added by potters; consequently, X-ray data based on mineral ratios cannot necessarily be interpreted culturally as "temper" added by potters.