“…Additionally, XRF generates representative data for a sample owing to its comparatively wide analytical area (from several to several‐tens millimeters diameter) compared with laser ablation ICP‐MS (e.g., Palumbi, Gratuze, Harutyunyan, Chataigner, and Archaeol), which can perform direct solid measurement with a very narrow analytical area (micrometer order). Generally, XRF directly measures solid samples (e.g., Princé et al) or assays a glass bead (e.g., Özçatal et al), powder pellet (e.g., Barone, Mazzoleni, Aquilia, and Barbera), and loose powder (e.g., Vleeschouwer, Renson, Claeys, Nys, and Bindler) prepared from a powdered sample. These specimens' characteristics are described elsewhere .…”