Roberto P. Xavier – Instituto de Geociências – Universidade Estadual de Campinas/UNICAMP – Brazil (xavier@ige.unicamp.br).

Brian Rusk – School of Earth and Environmental Sciences, James Cook University, Townsville, Australia (brian.rusk@jcu.edu.au).

Course Aims and Content

This two-day course will bring together a group of international experts to review current understanding of the geology and exploration characteristics of IOCG deposits, with emphases on metallogenesis and examples of world-class districts in different tectonic environments. Commonalities among the studied IOCG systems in terms of alteration zoning, mineralization styles, geochemical footprints, fluid regimes and ore deposition processes will be highlighted to frame the wide range of IOCG deposits into a conceptual evolutionary magnetite-group to hematite-group IOCG deposit model. The potent mineralizing effects of mixing of fluids from different sources in geodynamic environments that can sustain thermal crustal anomalies will be addressed to explain how series of world-class deposits can cluster within a single district. Finally, now that analytical breakthroughs are providing a better constraint on IOCG’s fluid sources and reconciling debates over the ‘right’ metallogenic model, it is time to ponder on the role of magmatism in the genesis of some components of low-Ti magnetite-apatite deposits and the role of geology in increasing effectiveness of exploration for IOCG deposits from under cover to well exposed settings.

Timing: 24-25 September (Pre-conference).

Place: Enjoy Hotel Casino and Resort (still to be confirmed).

Language: English.

Number of Participants

Minimum: 20

Maximum: 40

Costs (include course material and refreshments)

Early registration rate (until July 25, 2011)

SGA member – US$ 500

Non-member – US$ 600

Late registration rate (after July 25, 2011)

SGA member – US$ 600

Non-member – US$ 700

Student rate

SGA member – US$ 50

Non-member – US$ 100

Note: (1) To qualify for the student rate one must be enrolled full time in a recognized academic program. (2) Students will be admitted only after the minimum number of paying participants has been reached.


September 24 – Ore-forming environments and processes in IOCG systems*

- IOCG systems: Why are they so diverse? Are there global unifying characteristics?

Roger Skirrow (Geoscience Australia; roger.skirrow@ga.gov.au )

- Alteration footprints and zoning models in IOCG systems as vectors to mineralization

Louise Corriveau (Geological Survey of Canada; Louise.Corriveau@RNCan-NRCan.gc.ca )

- Fluid regimes in IOCG systems: chemical and isotopic signatures, potential sources, mechanisms of Cu-Au deposition and current genetic models

Brian Rusk (James Cook University, Townsville, Australia; brian.rusk@jcu.edu.au )

- The spatial, temporal and genetic connections between IOCG systems and iron oxide-apatite deposits (Part A): Examples from Iberia (Paleozoic) and the Andes (Mesozoic-Cenozoic)

Fernando Tornos (IGME, Spain; f.tornos@igme.es and f.tornos@gmail.com )

The spatial, temporal and genetic connections between IOCG systems and iron oxide-apatite deposits (Part B): Examples from the northern Fennoscandian ore province

Pär Weihed (Luleå University of Technology, Sweden; Par.Weihed@ltu.se )

September 25 – IOCG districts*

- Andean IOCG systems: The Candelaria and Mantoverde districts

Robert Marschik (Ludwig-Maximilians Universität, Germany; robert.marschik@iaag.geo.uni-muenchen.de; marschik@lmu.de )

- Geology and genesis of IOCG deposits in the Archean Carajás Mineral Province, Brazil

Roberto Xavier (UNICAMP, Brazil; Xavier@ige.unicamp.br )

- Hematite-group IOCG ± U Ore Systems (Gawler Craton – Australia)

Roger Skirrow (Geoscience Australia; roger.skirrow@ga.gov.au )

- Alteration zoning and physical property relationships in the “Magnetite-group” Cloncurry IOCG systems

Patrick Williams (James Cook University and Clump Mountain Geoscience; Pat@cmgeo.com.au )

*Time allocated for each topic will vary from one hour and forty five minutes to two hours. At the end of morning and afternoon sessions there will be time for questions and discussion.

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