Archaeologists have explored the use of obsidian — a volcanic glass used for tools and ceremonial objects and one of the most important raw materials in pre-Columbian times — in the Mexica (Aztec) Empire. They’ve analyzed 788 obsidian artifacts, including multiple types of objects and contexts, excavated from the Templo Mayor of Tenochtitlan (c. 1375-1520 CE), the main temple and core of the Empire located in what is now Mexico City....
