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gypsum steel ball in Mexico City

Aug 05, 2020·In Mexico, researchers have for the first time ever discovered previously unknown Mesoamerican mural minerals. The mercury sulfate and iron oxide were found in wall paintings in one of the most important of all pre-Columbian cities, Teotihuacan.The Mesoamerican mural minerals find is helping experts to better understand how ancient Mesoamericans created their artworks and more …

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