Description This workshop combines the topics covered in WK20 and WK25 The objectives of this 1 day short course are to review the large scale tectonic magmatic and temporal controls on the formation of porphyry and related epithermal deposits in both subduction and post subduction settings and their relationship to part of the spectrum of iron oxide copper gold IOCG deposits
All regions with IOCG deposits are characterized by large alteration halos including Na Ca and K ranging from 10 to 100 km2 or more Barton and Johnson 1996 2024 Hitzman Oreskes and Einaudi 1992 The alteration areas are usually of greater extent than the areas of IOCG mineralization Gandhi 2024 A key feature of IOCG deposits is the
Identification is usually the following methods Burn with fire After being burned the gold ore will still be yellow The gold ore is easy to produce yellow marks when you use a sharp stone or glass scratch on the surface Crush the ore to the size of sand and wash the sand If you see the heavy metal in bright yellow it is the gold ore
The deposits are mostly related to Neoarchean IOCG pre to sin tectonic systems Ga and/or Paleoproterozoic IOCG and Cu Au polymetallic systems related to post tectonic A type granites
Special Issue Information Dear Colleagues The discovery of the Olympic Dam and its definition as a new type of copper deposit with important resources and other commodities Fe Au U and Iron Oxide Copper Gold IOCG deposits has caused great interest in formation processes and characteristic guidelines that are useful for their exploration
Located in the Cordillera de la Costa of northern Chile the mines of the Mantoverde district exploit supergene oxide ore developed over several Lower Cretaceous hematite rich iron
Ore minerals in IOCG deposits are typically copper iron sulfide chalcopyrite and gangue pyrite forming 10 15% of the rock Supergene profiles can be developed above weathered examples of IOCG deposits as exemplified by the Sossego deposit Para State Brazil where typical oxidised copper minerals are present malachite cuprite native copper and minor amounts of digenite and
Schematic figure showing principal characteristics and inferred setting of iron oxide ± apatite IOA and iron oxide copper gold IOCG type mineral deposits in Missouri iron metallogenic province based on available drill core and surface information
RESEARCH COMMUNICATIONS 1046 CURRENT SCIENCE VOL 112 NO 5 10 MARCH 2024 Figure 1 a Location map of iron oxide copper gold IOCG deposits of Geological map of Thanewasna area western Bastar Craton Central India modified after Dora16 Figure 2
Defining IOCG signatures through compositional data analysis A case study of lithogeochemical zoning from the Olympic Dam deposit South Australia representing the roof of the IOCG system Conversely the ore mineralogy is consistent throughout the vertical scheme Magnetite is the only iron oxide formed and precipitate from iron rich
The paragenesis textures and chemical compositions of secondary hematite in regional potassic altered rhyolites four IOA deposits the sedimentary iron deposit at Pilot Knob and the Boss IOCG deposit in SE Missouri were determined and compared to primary magnetite from the IOA and IOCG deposits Magnetite is composed of elements characteristics of mafic to intermediate intrusions whereas
the IOCG classification 2 an examination of the essential larger scale features of the deposits clearly designated as within the IOCG or supposedly related groups 3 definition of their temporal distribution and 4 a discussion of the tec tonic implications IOCG Classification Figures 1 and 2 taken from Williams et al 2024 figs 2 3
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The Emmie Bluff iron oxide copper gold IOCG prospect is located in the Olympic Dam district South Australia and hosts sub economic 150 m thick Cu Au mineralisation associated with the hematite chlorite sericite alteration with chalcopyrite commonly replacing pre existing pyrite at a depth of 800 m With the use of cutting edge synchrotron X ray fluorescence microscopy and field
What does IOCG stand for in Ore Get the top IOCG abbreviation related to Ore All Acronyms Search options Acronym Meaning How to Abbreviate List of Abbreviations Popular categories Business Medical Military Slang Technology Clear Suggest IOCG Ore Abbreviation What is IOCG meaning in Ore 5 meanings of IOCG abbreviation related to
Ore defined by very low Cu/Au ratios Normally IOCG deposits have Cu/Au ratios broadly variable ranging from to 64 with most values concentrated between and Zhu 2024 The
The Geochemical Database for Iron Oxide Copper Cobalt Gold Rare Earth Element Deposits of Southeast Missouri IOCG REE GX contains new geochemical data compilations for samples from IOCG REE type deposits in which each rock sample has one best value determination for each analyzed species greatly improving speed and efficiency of use IOCG REE GX was created and designed to compile
It provides the following 1 a critical examination of the IOCG classification 2 an examination of the essential larger scale features of the deposits clearly designated as within the IOCG or supposedly related groups 3 definition of their temporal distribution and 4 a discussion of the tec tonic implications IOCG Classification
The southeast Missouri iron metallogenic province contains a remarkable wealth of historically important Fe Cu Au and rare earth element REE deposits including the Pea Ridge iron oxide apatite rare earth element IOA REE deposit and the Boss iron oxide copper gold IOCG deposit These deposits are coeval with silicic and intermediate composition magmatism in the St Francois Mountains terra
Download scientific diagram A Compilation of IOCG deposits through time shown as histograms for frequency open bars and total metal resources grey shaded bars Modified from Williams et al
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6 Olympic Dam owned by BHP Billiton is a Gawler Craton iron oxide copper gold IOGC ore body The Arunta West Copper Gold project is located approximately 600 kilometres west of Alice Springs in Western Australia and is strategically located between the Pokali mineral IOCG ore body 13
IOCG Iron Oxide Copper Gold Ore Deposits goes with porphyries as they are also loosely associated with a large felsic intrusions and form at moderate depths unlike the dominantly tertiary porphyries IOCG s tend to be much older and are generally protoizoic in age from to billion years ago There are some younger ones but they are in
ASX listed base metals explorer Hammer Metals is set to kick some serious goals at its early stage Mt Philp breccia iron oxide copper gold or IOCG project in northwest Queensland after being awarded $80 000 to partly fund exploration activity at the property 55km southeast of Mount Isa
IOCG Product Code Price 5765ppm Cu 303ppb Au 20% Fe felsic volcanic breccia OREAS 59b 50g CAD$ each 15 items in stock
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
Geoscience Australia has undertaken more than eight prospectivity mapping projects since 2024 using the mineral systems conceptual framework first in the Yilgarn Craton orogenic gold Czarnota et al 2024 and then in a series of regional scale studies of the potential for uranium and other energy related commodities These included studies of the potential for uranium bearing IOCG
The Chilean Iron Belt is a geological province rich in iron ore deposits in northern Chile It extends as a north south beld along the western part of the Chilean regions of Coquimbo and Atacama chiefly between the cities of La Serena and Taltal The belt follows much of the Atacama Fault System and is about 600 km long and 25 km Iron oxide apatite iron oxide copper gold ore deposits
Many other deposits are classified as IOCG mineralisation in China such as the Qiaoxiahala Fe Cu Au deposit in the Xinjiang Province Ying et al 2024 Lala Fe Cu Au Co Mo REE deposit in the Sichuan Province Li et al 2024 Shilu Fe Cu Au Co deposit in Hainan Province Xu et al 2024 and iron apatite deposits in the Ningwu and Luzong basins of the Lower Yangtze Valley Mao et al
The airborne data are also inverted to three dimensional density and magnetic susceptibility models over four concealed deposits at Pea Ridge IOA ± REE Boss IOCG Kratz Spring IOA and Bourbon IOCG The Pea Ridge susceptibility model shows a magnetic source that is vertically extensive and traceable to a depth of greater than 2 km