Mineralium Deposita

, Volume 34, Issue 8, pp 799–801

The Candelaria (Cu-Fe-Au) and Punta del Cobre (Cu-Fe) deposits (Copiapó, Chile): a case for extension-related granitoid emplacement and mineralization processes?

  • R. Oyarzun
  • M. Rodríguez
  • M. Pincheira
  • M. Doblas
  • S. Helle
LETTER

DOI: 10.1007/s001260050241

Cite this article as:
Oyarzun, R., Rodríguez, M., Pincheira, M. et al. Mineral. Deposita (1999) 34: 799. doi:10.1007/s001260050241

Abstract

The Lower Cretaceous volcanic formations of Copiapó (Chile) host major stratiform, disseminated, vein, and stockwork mineral deposits. Among these are the Punta del Cobre district (Cu-Fe) and the neighbouring, large Candelaria deposit (Cu-Fe-Au). These deposits are likely to have formed during a major extensional event that was accompanied by granitoid emplacement that triggered important contact metamorphism, metasomatic activity and mineralization processes. We suggest here that alteration-mineralization processes developed within the upper-plate domain of a NNE-trending, ESE-dipping extensional system, while granitoids were accomodated within the lower-plate. If this model prove to be right, `Candelaria-type' deposits may be hidden beneath the present, higher structural position of the Punta del Cobre district.

Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • R. Oyarzun
    • 1
  • M. Rodríguez
    • 2
  • M. Pincheira
    • 2
  • M. Doblas
    • 3
  • S. Helle
    • 4
  1. 1.Departamento de Cristalograf ía y Mineralogía, Facultad de C.C. Geológicas, Universidad Complutense, 28040 Madrid, Spain e-mail: oyarzun@eucmax.sim.ucm.es Fax: +34-91-3944872ES
  2. 2.Instituto GEA, Universidad de Concepción, Casilla 4107, Concepción-3, ChileCL
  3. 3.Museo Nacional de Ciencias Naturales (CSIC), José Gutierrez Abascal 2, 28006, Madrid, SpainES
  4. 4.Instituto GEA, Universidad de Concepción, Casilla 4107, Concepción-3, ChileCL