Abstract
Proton particle-induced x-ray emission (proton PIXE) analysis has been used for the determination of minor and trace element concentrations in obsidian artifacts. Thin targets were made from the acid digests of 30 to 100 mg of finely powdered obsidian samples. Concentrations are reported for K, Ca, Tl, Ba, Mn, Fe, Zn, Ga, Rb, Sr, and Zr. Forty-nine obsidian artifacts from Northern Campeche, Mexico, were analyzed. Methods used for the association of obsidian artifacts with geological sources are illustrated.
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