Ortega-Gutiérrez, F. (2014) “Petrology of very high temperature crustal xenoliths in the Puente Negro intrusion: a sapphire-spinel-bearing Oligocene andesite, Mixteco terrane, southern Mexico”, Revista Mexicana de Ciencias Geológicas, 28(3). Available at: https://rmcg.geociencias.unam.mx/index.php/rmcg/article/view/194 (Accessed: 4 April 2025).