Iron oxide copper gold ore deposits - Wikipedia
Iron oxide copper gold ore deposits (IOCG) are important and highly valuable concentrations of copper, gold and uranium ores hosted within iron oxide dominant gangue assemblages which share a common genetic origin.
Review Iron oxide copper-gold (IOCG) deposits – A review (part …
2022年1月1日 · IOCG deposits are major members of a global family of deposits in Cu-Au-Fe mineral systems. A new classification scheme combines settings, ore geochemistry and mineralogy. IOCG and related deposits occur in orogenic, post-orogenic and arc-hosted settings. Three sub-types of IOCG deposits have elevated Co ± Ni, Bi, Se, Te and/or REE ± U, F, Ba.
2.4 Iron oxide copper-gold mineral system - Geoscience Australia
Iron oxide copper-gold (IOCG) deposits (Hitzman et al., 1992) are a diverse family of mineral deposits characterised by the following features: (1) Cu with or without Au, as economic metals, (2) hydrothermal ore styles and strong structural controls, (3) abundant magnetite and/or hematite, (4) Fe oxides with Fe/Ti greater than those in most ...
Formation of giant iron oxide-copper-gold deposits by ... - Nature
2023年7月25日 · Our data provide empirical evidence of grain-to-deposit scale compositional and potentially temperature changes in an IOCG system. The results support the use of actinolite chemistry as a novel...
Gold in iron oxide copper–gold deposits - ScienceDirect
2016年1月1日 · Iron oxide copper–gold (IOCG) deposits contain economic or anomalous gold. The gold is present as native gold, electrum, and gold–bismuth–antimony–tellurium alloy. The gold distribution is controlled by gold contents in host rocks and the efficiency of …
Research progress of fluid inclusions and its ... - ScienceDirect
2024年10月1日 · Iron oxide copper-gold (IOCG) deposits proposed initially by Hitzman et al. (1992) are a new group of hydrothermal Fe-Cu deposits enriched in Fe, Cu, Au, U and REE. The research of IOCG deposits gained impetus following the exploration and subsequent identification of the Olympic Dam Cu-U-Au deposit in Australia in 1975.
Minerals | Special Issue : Iron Oxide-Copper-gold (IOCG) Deposits …
2019年4月20日 · Silica-bearing magnetite was recognized in the Copiapó Nordeste prospect as the first documented occurrence in Chilean iron oxide–copper–gold (IOCG) deposits. The SiO 2 -rich magnetite termed silician magnetite occurs in early calcic to potassic alteration zones as orderly oscillatory layers in polyhedral magnetite [...]
The IOCG sensu stricto deposits are magmatic-hydrothermal deposits that contain economic Cu and Au grades, are structurally controlled, commonly contain significant volumes of breccia, are commonly associated with presulfide sodic or sodic-calcic alteration, have alteration and/or brecciation zones on a large, commonly regional, scale relative t...
The nature and origin of iron oxide (-copper-gold) (IOCG) systems remains contentious (Williams et al. 2005). The extensive, relatively young IOCG-bearing terrains in the Cordillera of North and South America (Fig. 1) provide a useful framework for examining the diversity of IOCG systems, their regional geologic
Iron Oxide Copper-Gold (IOCG) Deposits through Earth History ...
2010年5月1日 · The iron oxide copper-gold (IOCG) group of deposits, initially defined following discovery of the giant Olympic Dam Cu-U-Au deposit, has progressively become too-embracing when associated deposits and potential end members or analogs are included.
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