Abstract
Anthropology Scholars have long assumed that Aztec and Mixtec turquoise artifacts uncovered in Mesoamerica were imported from the American Southwest, which is home to abundant turquoise deposits. Thibodeau et al. analyzed the lead and strontium isotopic ratios in 38 Mesoamerican turquoise mosaic tiles (tesserae) from the Sacred Precinct of Tenochtitlan and in five tesserae from Mixtec turquoise mosaics. The isotopic compositions of most of the samples matched copper deposits and crustal rocks of Mesoamerica, suggesting at least one Mesoamerican region as the source of this turquoise. Sci. Adv. 10.1126/sciadv.aas9370 (2018).
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