Berrezueta, E., Ordóñez-Casado, B., Espinoza-Santos, C., Loayza-Ramírez, J., Carrión-Mero, P., Morante-Carballo, F. . and Bonilla, W. (2021) “Mineralogical and petrographical characterization of the Vizcaya, Octubrina and Gabi veins from the Zaruma-Portovelo gold epithermal ore deposit (Ecuador)”, Boletín Geológico y Minero, 132(4), pp. 421–437. doi: 10.21701/bolgeomin.132.4.004.