Ostroumov, Mikhail, and Pedro Corona-Chávez. “Mineralogical Study of Mordenite from the Sierra Madre Del Sur, Southwestern Mexico”. Revista Mexicana De Ciencias Geológicas, vol. 20, no. 2, June 2018, pp. 133-8, https://rmcg.geociencias.unam.mx/index.php/rmcg/article/view/938.