The Protohistoric Time Period in Northwest Ohio: Perspectives from the XRF Analysis of Metallic Trade Materials

This paper presents the results of an experimental study into the usefulness of X-ray florescence (XRF) in identifying the composition of metal artifacts found at aboriginal sites in northwestern Ohio. In the late 1990s, we subjected 96 samples to XRF and documented our results. We then compared our data to that collected by more precise spectrographic methods to assess the effectiveness of the XRF method for this application. While not precise enough to source native coppers, we conclude that XRF is a cheap, nondestructive method for differentiating native copper from its European counterparts at sixteenth- and seventeenth-century Late Woodland sites.