Comparative Analysis of The Results of Studying Fabrics of Knidian Amphorae by Various Natural-Scientific Methods

A comparison of the results of analyzing the main and trace elemental compositions of clays used for Knidian amphorae (using seven samples as an example) is presented; the elemental composition is studied by scanning electron microscopy with energy-dispersive X-ray analysis and inductively coupled plasma-mass spectrometry. Data are also obtained by the mineralogical and petrographic investigation of the same samples. In general, studies conducted using two different methods show similar results. The elemental analysis reveals differences in the content of individual elements (Sr, Nd, Th, Cu, and Y) in samples 55, 90, and 168. According to the petrographic study, features in the composition of artificial additives used as a thinning agent are also recorded in samples 55 and 90. The noted differences in the number of some elements in sample 166 are not recorded during the study of the petrographic thin section.