portable X-ray florescence (Other Keyword)
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Sourcing Rapa Nui mata‘a from the collections of Bishop Museum using non-destructive pXRF (2015)
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On Rapa Nui (Easter Island), four geological sources of rhyolitic obsidian were utilized to manufacture obsidian artifacts, including tanged implements known as mata‘a. In this study, a total of 332 mata‘a from the collections of Bishop Museum were analyzed using portable X-ray fluorescence (pXRF). Two analytical methods, Discriminant Function Analysis and Support Vector Machines Classification, were used to assign geographical provenance to these artifacts, which appear to be manufactured using...