image: Close-up view of a Mixteca-style shield decorated with turquoise mosaic from the collection of the Smithsonian Institution-National Museum of the American Indian (NMAI). This material relates to a paper that appeared in the June 13, 2018, issue of Science Advances, published by AAAS. The paper, by A.M. Thibodeau at Dickinson College in Carlisle, Pa., and colleagues was titled, "Was Aztec and Mixtec turquoise mined in the American Southwest?." view more
Credit: [Credit: Frances F. Berdan]