Gypsum from
Costa Rica | |
| Stoiber, R.E., Rose Jr., W.I. (1974) Fumarole incrustations at active Central American volcanoes. Geochimica et Cosmochimica Acta, 38, 495-516. |
| Rodríguez, A., & van Bergen, M. J. (2017). Superficial alteration mineralogy in active volcanic systems: An example of Poás volcano, Costa Rica. Journal of Volcanology and Geothermal Research, 346, 54-80. |