A greenish obsidian blade, believed to have been found on the Texas Panhandle, may be from the 16th-century expedition led by the Spanish explorer Francisco Vázquez de Coronado, a new study suggests.
An obsidian blade found at least 80 years ago turned out to be a nearly 500-year-old artifact left by explorers in the Texas Panhandle, a new study said. Photo from Southern Methodist University ...
The Aztecs were big fans of obsidian, and often used the razor-sharp volcanic glass to slice through the chests of human sacrifices in order to extract the still-beating heart. Such was their love of ...
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