Current Understanding of Iron Oxide Associated-Alkali Altered Mineralised Systems;
Part II - A Review.
by
T.M. (Mike) Porter, Porter GeoConsultancy Pty Ltd, Adelaide, South Australia.
in Porter, T.M. (Ed), 2010 - Hydrothermal Iron Oxide Copper-Gold and Related Deposits: A Global Perspective, Advances in the Understanding of IOCG Deposits; PGC Publishing, Adelaide. v. 3, pp. 33-106.
ABSTRACT
This second of the two parts of this paper reviews aspects of the lithospheric- to deposit-scale setting, tectonic and structural controls, associated magmatism, temporal distribution, implied crustal scale sources and circulation dynamics of ore-related fluids, and the resultant alteration and mineralisation patterns, for most of the world’s provinces hosting significant examples of iron oxide-alkali altered mineralised systems. It forms the basis for the comparison and observations outlined and discussed in the overview of the first part of the paper. It is also intended as a convenient reference, summarising a comprehensive selection of such provinces and deposits worldwide, and includes some not covered elsewhere in these two volumes, as well as additional background on others that are.
An emphasis is placed on those provinces hosting economic IOCG sensu stricto deposits that have produced copper±gold ore, as well as those that are expected to be exploited in the foreseeable future, while also providing information on provinces with similar characteristics that host signifi cant iron oxide-alkali altered mineralised systems and deposits, but do not include IOCG sensu stricto ores.
The provinces covered include the: Gawler Craton, Tennant Creek Inlier and Mount Isa Block in Australia; Carajás Mineral Province in Brazil; Central Andean Coastal Belt in Chile and Peru; Khetri and Alwar Copper Belts in India; Lao Cai District in Vietnam; Lufilian Arc in Central Africa; Great Bear Magmatic Zone and Wernecke Breccia in Canada; Southeast Missouri Iron Province in the US; Fennoscandian Shield in Scandinavia; Angara-Ilim and Turgai districts in Russia; Bushveld and Palabora Complexes in South Africa; and the Ossa Moreno Zone in Spain.
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