Concepción del Oro (kon-sep-see-ON del O-ro), city (1990 pop. 7,784) and township, Zacatecas, N central Mexico, on interior plateau, near Coahuila border, 60 mi/97 km SW of Saltillo, and a short distance W of Mexico Highway 54; 24°36'N 101°25'W. Elev. 6,791 ft/2,070 m. RR terminus and mining center (silver, copper, gold, lead, mercury, iron), with copper smelters.
