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·the world s gold The other minerals found in Africa are copper iron ore chromium uranium cobalt and bauxite Oil is found in Nigeria Libya and Angola AUSTRALIA Australia is the largest producer of bauxite in the world It is a leading producer of gold diamond iron ore tin and nickel It is also rich in copper lead zinc and manganese
·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
·The Geological Survey USGS Mineral Resources Data System catalogs information about mineral resources around the United States and the world Using the map tool users can zoom in to obtain reports and data on past and present mines mine prospects and processing plants All of the data can be downloaded for further use and analysis The image
·Copper Cu Ore Minerals Copper Cu ore minerals are naturally occurring compounds that contain copper in various chemical compositions Copper ore minerals are typically found in rocks and mineral deposits and serve as the primary source of copper for industrial use Some common copper ore minerals include Chalcopyrite Chalcopyrite
This paper presents a review of the present IOCG deposits research which includes the definition of IOCG deposits temporal and spatial distribution ore forming environments ore forming magmatic rocks their geological features ore controlling structures and ore bearing rocks mineralized alteration zoning and their genesis and ore forming
·4 What are the types of copper ore There are two distinct types of copper deposits sulfide ore and oxide ore Currently the most common source of copper ore is the sulfide ore mineral
·9 2 Sedimentary iron ore deposits of siderite and limonitic composition It is also known as Bog iron deposit These ores of siderite and limonitic compositions are found associated with the iron stone shales of lower Gondwana age The iron minerals are accumulated as irregular bodies in stream beds and typically at the bottom levels of bogs and marshes
·Map showing the location of Iron Ore Mines in India Detail information on Iron Ore mines found in different regions in India
The reserves of crude iron ore in Australia the country with the world s largest iron ore reserves were estimated to be approximately 58 billion metric tons in 2023
Gold also combines to form the mineral ore calaverite AuTe 2 Gold has no known biological role and is non toxic Ancient gold deposits are found in greenstone belts These volcanic belts are more than billion years old "Skarn Au deposits are a subset of a spectrum of skarn types that are variously copper zinc lead or iron
The Largest Gold Deposits Depending on the year or the source different mines claim to have the most extensive gold deposits in the world Muruntau Uzbekistan Muruntau is considered one of Earth s most extensive gold deposits It has produced about 85 tonnes of gold since 1967 This pit is miles Km wide and 2 000 feet 60 0m deep
4 ·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 igneous rocks and 5 no clear
·In Australia the two most important are lode gold deposits and copper gold deposits of which the latter includes iron oxide copper gold and porphyry deposits Copper gold deposits are the most significant contributors to the nation s gold inventory accounting for 59% of reserves and 65% resources at operating mines
·copper cobalt and gems and Western Africa for its iron ore bauxite uranium and gold Nigeria is Africa s most populous nation and its economy is n ominally the largest slightly ahead of
·The most prominent IOA deposits are those found near Kiruna in northern Sweden the type locality of these magnetite apatite deposits Fig 1 Other world class districts occur in central Sweden
·Gold is either the only economically important metal or a major by product in 11 well characterized deposit types—paleoplacer orogenic porphyry epithermal Carlin placer reduced intrusion
·In many places around the world such as Chile and Sweden copper and gold have also been found near certain iron ores a fact that has led researchers from Luleå University of Technology in
·The first major discovery of copper in Australia was at Kapunda in South Australia in 1842 when Francis Dutton found copper ore whilst searching for lost sheep which is mining out one of the largest copper bearing deposits in the world Other examples of important copper resources are at the Prominent Hill and Carrapateena copper gold
·Cu/Au atomic ratios of porphyry copper ore deposits form a continuous range from about 5000 to 5 000 000 with a median near 40 000 which separates gold rich and gold poor deposits Gold is found in porphyry copper deposits in solid solution in Cu Fe and Cu sulfides and as small grains of native gold usually along boundaries of bornite
The so called orogen deposits also belong to the primary gold deposits some of the largest gold producing regions in the world belong to this type These gold deposits lie at a depth between 1200 and 4500 metres and were created due to mountain formation They exist in marine sediments marine deposits or metamorphic rock created deep in the
·Iron ore generates in three batches The first batch attempts to generate 90 times per chunk in blobs of 0 13 [JE only] or 0 16 [BE only] from levels 80 to 384 being most common around level 232 and becoming less common toward either end of the second batch attempts to generate 10 times per chunk in blobs of 0 13 [JE only] or 0 16 [BE only]
·Iron oxide copper gold IOCG deposits defined primarily by their elevated magnetite and/or hematite contents constitute a broad ill defined clan related to a variety of tectono magmatic settings The youngest and therefore most readily understandable IOCG belt is located in the Coastal Cordillera of northern Chile and southern Peru where it is part of a
