Geology of the Cerro Quema Au-Cu deposit (Azuero Peninsula, Panama)

Corral, I., Griera, A., Gómez-Gras, D., Corbella, M., Canals, À., Pineda-Falconett, M., and Cardellach, E. (2011) Geology of the Cerro Quema Au-Cu deposit (Azuero Peninsula, Panama). Geologica Acta, 9 (3-4). pp. 481-498.

[img] PDF (Published Version) - Published Version
Restricted to Repository staff only

View at Publisher Website:


The Cerro Quema district, located on the Azuero Peninsula, Panama, is part of a large regional hydrothermal system controlled by regional faults striking broadly E-W, developed within the Río Quema Formation. This formation is composed of volcanic, sedimentary and volcano-sedimentary rocks indicating a submarine depositional environment, corresponding to the fore-arc basin of a Cretaceous–Paleogene volcanic arc. The structures observed in the area and their tectono-stratigraphic relationship with the surrounding formations suggest a compressive and/or transpressive tectonic regime, at least during Late Cretaceous–Oligocene times. The igneous rocks of the Río Quema Formation plot within the calc-alkaline field with trace and rare earth element (REE) patterns of volcanic arc affinity. This volcanic arc developed on the Caribbean large igneous province during subduction of the Farallon Plate. Mineralization consists of disseminations of pyrite and enargite as well as a stockwork of pyrite and barite with minor sphalerite, galena and chalcopyrite, hosted by a subaqueous dacitic lava dome of the Río Quema Formation. Gold is present as submicroscopic grains and associated with pyrite as invisible gold. A hydrothermal alteration pattern with a core of advanced argillic alteration (vuggy silica with alunite, dickite, pyrite and enargite) and an outer zone of argillic alteration (kaolinite, smectite and illite) has been observed. Supergene oxidation overprinted the hydrothermal alteration resulting in a thick cap of residual silica and iron oxides. The ore minerals, the alteration pattern and the tectono-volcanic environment of Cerro Quema are consistent with a high sulfidation epithermal system developed in the Azuero peninsula during pre-Oligocene times.

Item ID: 40246
Item Type: Article (Research - C1)
ISSN: 1696-5728
Keywords: Panama, Cerro Quema, Au-Cu high sulfidation epithermal deposit, fore-arc basin, arc-magmatism
Funders: Ministerio de Ciencia e Innovación, Spain (MCI) , Spanish Ministry of Science and Education (MEC), SEG Foundation, SEG Canada Foundation, Departament d'Universitats, Recerca i Societat de la Informació (Generalitat de Catalunya)
Projects and Grants: MEC project CGL2007-62690/BTE
Date Deposited: 01 Sep 2015 04:17
FoR Codes: 04 EARTH SCIENCES > 0403 Geology > 040306 Mineralogy and Crystallography @ 30%
04 EARTH SCIENCES > 0403 Geology > 040307 Ore Deposit Petrology @ 40%
04 EARTH SCIENCES > 0402 Geochemistry > 040202 Inorganic Geochemistry @ 30%
SEO Codes: 84 MINERAL RESOURCES (excl. Energy Resources) > 8401 Mineral Exploration > 840105 Precious (Noble) Metal Ore Exploration @ 50%
84 MINERAL RESOURCES (excl. Energy Resources) > 8401 Mineral Exploration > 840102 Copper Ore Exploration @ 50%
Downloads: Total: 3
More Statistics

Actions (Repository Staff Only)

Item Control Page Item Control Page