Iron Oxide Copper-Gold Deposits

This dataset is the time-space distribution of IOCG deposits and a descriptive geologic framework covering the larger and best studied deposits.

    Data Record Details
    Data record related to this publication Iron Oxide Copper-Gold Deposits
    Data Publication title Iron Oxide Copper-Gold Deposits
  • Description

    This dataset is the time-space distribution of IOCG deposits and a descriptive geologic framework covering the larger and best studied deposits.

  • Other Descriptors
    • Descriptor

      IOCG deposits are the products of fault and/or shear zone-controlled distal magmatic hydrothermal systems, some of which incorporated significant amounts of nonmagmatic fluids. If magmas made a major contribution to the deposits, there are important questions to be addressed regarding tectonic setting and petrochemical specialization leading to the generation of an Fe-Cu–rich fluid, as well as fluid evolution under the deep-seated conditions implied for deposits such as those in the Cloncurry district. This implies that the fundamental control on global IOCG distributions may relate to the specifics of magma generation in the lower crust or upper mantle. Alternately, if salts are primarily derived from basinal fluids, evaporites, or metamorphism, and the metals from leaching of rocks along the flow path or at the source (Table 1), then the implication is that prospectivity would relate to the specific paleogeographic environment or stratigraphic succession, as well as to the thermal and permeability history of the host rocks around the deposits. In both cases, a sulfur source is required for precipitation of Cu, and this may be the critical factor for economic productivity, regardless of the source of fluids and metals. Whether or not fluid mixing or multiple sources might be the defining hallmarks of IOCG deposits remains to be demonstrated. However, recognition of proximity to likely causative intrusions, and the roles of fluid mixing versus wallrock reaction and cooling, may ultimately permit discrimination of different deposit types within this broader class and a more focused exploration and research understanding.

    • Descriptor type Full
    • Descriptor

      Dataset consists of a map of the location of the principal IOCG deposits globally. Format of dataset is pdf.

    • Descriptor type Note
    • Descriptor
    • Descriptor type
    • Descriptor
    • Descriptor type
  • Data type dataset
  • Keywords
    • iron oxide copper-gold
    • Iocg
    • ernest henry
    • Economic Geology
    • Chile
    • olympic dam
    • ore systems
  • Funding source
  • Research grant(s)/Scheme name(s)
  • Research themes
    Industries and Economies in the Tropics
    FoR Codes (*)
    • 040307 - Ore Deposit Petrology (040307)
    SEO Codes
    Specify spatial or temporal setting of the data
    Temporal (time) coverage
  • Start Date 2004/01/01
  • End Date 2005/01/01
  • Time Period
    Spatial (location) coverage
  • Locations
    Data Locations

    Type Location Notes
    Physical Location School of Earth and Environmental Science, James Cook University, Townsville, Qld 4811 AUSTRALIA, Phone Main Office: +61 7 4781 4536, Fax General: +61 7 4781 5581
    Attachment williams_ironoxidecoppergold_seg05 4.pdf
    The Data Manager is: Patrick Williams
    College or Centre
    Access conditions Open: free access under license
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  • Related publications
      Name Williams, Patrick J., Barton, Mark D., Johnson, David A., Fontboté, Lluís, De Haller, Antoine, Mark, Geordie, Oliver, Nicholas H.S., and Marschik, Robert (2005) Iron oxide copper-gold deposits: geology, space-time distribution, and possible modes of origin. Economic Geology, . pp. 371-405. ISSN 1554-0774
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  • Data owners
    Citation Williams, Patrick; Oliver, Nick (2012): Iron Oxide Copper-Gold Deposits. James Cook University.