566 geochemical raw data, corresponding to 133 specimens of geological and archaeological obsidian artifacts mostly, including flaked and ground stone, were determined by an X-Ray Fluorescence XL3t series NITON Analyzer from Thermo Fisher Scientific with support of the software Thermo Scientific™ Niton Data Transfer (NDT™). The analysis had an experimental stage to generate a final analytical protocol, based in a repetition of at least 3 analyzes per obsidian sample, procuring 120 counts per second, under the SOIL or TestAllGeo condition programs of Niton.