Geology and ore deposits of the Toqui District, Aysen, Chile

• Published in: Economic geology and the bulletin of the Society of Economic Geologists Vol. 78; no. 6; pp. 1119 - 1143
• Main Authors: Wellmer, F. W, Reeve, E. J, Wentzlau, E, Westenberger, H
• Format: Journal Article
• Language: English
• Published: Economic Geology Publishing Company 01-10-1983
• Subjects: Aisen Chile; Aisen del General Carlos Ibanez del Campo Chile; base metals; Chile; Concordia; copper ores; Coyhaique Formation; Cretaceous; economic geology; Estatuas; exhalative processes; host rocks; igneous rocks; Jurassic; lead-zinc deposits; mantos; Mesozoic; metal ores; mineral deposits, genesis; polymetallic ores; San Antonio; South America; stratiform deposits; Toqui District; veins; volcanic rocks; volcanism
• ISSN: 0361-0128; 1554-0774
• DOI: 10.2113/gsecongeo.78.6.1119

Stratiform deposits of zinc-lead-copper or zinc and zinc-lead veins. Both types of mineralization are hosted by the mainly submarine volcanic upper Coyhaique Formation of Jurassic-Cretaceous age, which has been divided into three series. The stratigraphic equivalence of mantos at Concordia (Zn-Pn-Cu), Estatus (Zn), and San Antonio (Zn-Pb-Cu) is shown by tracing sedimentary units despite changes in volcanic lithologies. The ore is of volcanogenic origin. The exhalative system, which was still active at Concordia after the deposition of the uppermost base metal sulfide zone, deposited pyrrhotite mineralization within the overlying lutite.—Modified journal abstract.