Chalcopyrite from selected localities.
Ecuador | |
| Willson Bonilla |
Alejandro Félix collection. | |
| Eugene Carmichael collection; www.mineralmundi.com; Morocho, A., & Rolando, J. (2009). Rendimiento de la flotación para concentrar sulfuros minerales de los relaves en los distritos mineros de Portovelo-Zaruma, Bella Rica y San Gerardo (Doctoral dissertation). |
I. Vikentyev, R. Banda, A. Tsepin, V. Prokofiev, O. Vikentyeva (2005) Mineralogy and formation conditions of Portovelo-Zaruma gold-sulphide vein deposit, Ecuador. IGCP Project 486, 2005 Field Workshop, Kiten, Bulgaria, 14-19 September 2005 | |
| Willson Bonilla |
Mining concession Barbasco 1A, Portovelo, Portovelo Canton, El Oro Province, Ecuador