Yucatán Peninsula near the modern township of Sacalum, Yucatán. A second possible site was more recently (2005) identified, near Ticul, Yucatán. The Maya blue synthetic pigment was also manufactured in other Mesoamerican regions and used by other Mesoamerican cultures, such as the Aztecs of central Mexico. The blue coloration seen on Maya and Aztec codices, and early colonial-era manuscripts and maps, is largely produced by the organic-inorganic mixture of añil leaves and palygorskite, with smaller amounts of other mineral additives. Human sacrificial victims in postclassic Mesoamerica were frequently daubed with this blue pigmentation. See also Notes References External links Attapulgite clay patent Attapulgite, historical marker Magnesium minerals Antidiarrhoeals Medicinal clay Clay minerals group Monoclinic minerals Minerals in space group 12