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Kiruna-type iron oxide–apatite (IOA) deposits, an important global resource of iron and potentially rare earth elements (REEs) and phosphorus, consist of massive, disseminated, brecciated, and/or vein-type magnetite + apatite + diopside and/or actinolite ores (1–6).It has long been recognized that IOA deposits are spatially and temporally …
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They are nestled in the Chilean iron belt, between the largest iron ore mines in Chile: Cerro Negro and Los Colorados, owned by Compañía Minera del Pacífico ("CMP"). ... Admiralty's Harper South project is …
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Karara comprises a large-scale, long-life magnetite orebody amenable to bulk mining and processing. Magnetite ore has lower iron content (34-36% Fe) than hematite ore (58-64% Fe). It must be upgraded by a complex ore treatment process (beneficiation) to produce a high-grade (+65% Fe) concentrate for steelmaking.
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Magnetite geochemistry is crucial for the discrimination of ore deposit genetic type. Traditional two-dimensional discrimination diagrams based on particular data for limited deposits cannot meet the requirements of high-precision classification. The continuous compilation of magnetite geochemical big data and high-precision machine …
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Pa ge 2/ 17 Abstract Magnetite is the main constituent of iron oxide–apatite (IOA) deposits, which are a globally important source of Fe and other elements such as P and REE, critical for modern ...
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Microscopy and rock-magnetic properties appear as appropriate tools for investigating Chilean iron-ore deposits. If the ores were initially lava flows of …
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Magnetite is the main constituent of iron oxide-apatite (IOA) ore deposits, commonly referred to as Kirunatype deposits, which can host hundreds of millions to …
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Iron oxide-apatite (IOA) deposits are important sources of iron. The role of evaporite layers in the formation of IOA ore deposits remains controversial. The Luohe deposit in eastern China and the El …
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A Continuum from Iron Oxide Copper-Gold to Iron Oxide-Apatite Deposits: Evidence from Fe and O Stable Isotopes and Trace Element Chemistry of Magnetite. Economic Geology, 2020, 115, 1443-1459. 4.0 36 6 A review of magnetite geochemistry of Chilean iron oxide-apatite (IOA) deposits and its implications for ore-forming processes.
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The textures of outcrop and near-surface exposures of the massive magnetite orebodies (>90 vol % magnetite) at the Plio-Pleistocene El Laco iron oxide-apatite (IOA) deposit in northern Chile are similar to basaltic lava flows and have compositions that overlap high- and low-temperature hydrothermal magnetite. Existing …
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DOI: 10.1016/j.oregeorev.2020.103748 Corpus ID: 224948064; A review of magnetite geochemistry of Chilean iron oxide-apatite (IOA) deposits and its implications for ore-forming processes
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The geochemistry of apatite from the Los Colorados iron oxide–apatite deposit, Chile: implications for ore genesis. Apatite grains from the Los Colorados iron oxide–apatite …
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Abstract The Pliocene El Laco deposits of magnetite-apatite iron ore of the Kiruna type, situated on the flanks of a volcano in northern Chile, can morphologically and structurally be described as extrusive and intrusive magmatic orebodies with hydrothermal over. Fluid inclusions in pyroxene and apatite record different stages in the …
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New contributions to the understanding of Kiruna-type iron oxide–apatite deposits revealed by magnetite ore and gangue mineral geochemistry at the El Romeral deposit, Chile. Ore Geol. Rev. 93 ...
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Major deposits in the Chilean iron belt and Kiruna contain ... Keywords: Oxygen isotope, magnetite, iron ore, El Laco, Kiruna, Chile, Sweden. 1 Swedish Museum of Natural History, Box 50007, ...
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Magnetite is the most important iron ore in iron oxide-apatite (IOA) deposits which represent the Cu-poor end-member of the iron oxide-copper-gold (IOCG) clan. Magnetite chemistry has been used as a petrogenetic indicator to identify the geological environment of ore formation and as a fingerprint of the source reservoir of iron. In this study, we …
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Magnetite is the main constituent of iron oxide–apatite (IOA) ore deposits, commonly referred to as Kiruna-type deposits, which can host hundreds of millions to …
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A few iron ore deposits, notably in Chile, are formed from volcanic flows containing significant accumulations of magnetite phenocrysts. [10] Chilean magnetite iron ore deposits within the Atacama Desert have also formed alluvial accumulations of magnetite in streams leading from these volcanic formations.
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The new and compiled magnetite data from IOA deposits from the Chilean Iron Belt and El Laco are consistent with a transition from magmatic to hydrothermal conditions.
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What is iron ore? Iron ores are rocks and minerals from which metallic iron can be extracted. There are four main types of iron ore deposit: massive hematite, which is the most commonly mined, magnetite, titanomagnetite, and pisolitic ironstone. These ores vary in colour from dark grey, through to deep purple, rusty red and bright yellow.
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20 The origin of magnetite-(apatite) iron deposits (MtAp) is among the most contentious issue in 21 ore geology with competing models involving purely hydrothermal to magmatic processes. We
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DOI: 10.1016/j.oregeorev.2020.103361 Corpus ID: 214045194; Geochemistry of magnetite from the giant Paleoproterozoic Dahongshan Fe-Cu deposit, SW China: Constraints on nature of ore-forming fluids and depositional setting
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Thermometry data reveal that magnetite cooling trends are consistent with genetic models invoking a combined igneous and magmatic-hydrothermal origin that involve Fe-rich fluids sourced from intermediate silicate magmas. Magnetite is the main constituent of iron oxide–apatite (IOA) deposits, which are a globally important source of Fe and …
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a Backscattered electron (BSE) image of a representative apatite grain from drill core LC-04 (sample 04-99.5B in Knipping et al. 2015a, b) taken from the western massive magnetite ore body.
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Description and properties of common iron ore minerals. Iron ore minerals are rocks or minerals that contain iron in concentrations high enough to be economically extracted. Common iron ore minerals include: Hematite (Fe2O3): Hematite is the most abundant and important iron ore mineral. It is typically steel-gray to black in color and …
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El Romeral iron mine is in the coastal iron province of northern Chile, a north-trending belt of magnetite deposits about 30 km wide and 600 km long.Iron at El Romeral is mined from two orebodies in which magnetite is microscopically intergrown with actinolite. The Main orebody is a lenticular, steeply dipping magnetite-rich mass in a reentrant …
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A review of magnetite geochemistry of Chilean iron oxide-apatite (IOA) deposits and its implications for ore-forming processes ... Magnetite is the most important iron ore in iron oxide-apatite (IOA) deposits which represent the Cu-poor end- member of the iron oxide-copper–gold (IOCG) clan. Magnetite chemistry has been used as a …
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The Geochemistry of Magnetite and Apatite from the El Laco Iron Oxide-Apatite Deposit, Chile: Implications for Ore Genesis Nikita L. La Cruz,1,2,† J. Tomás Ovalle,3,4 Adam C. Simon,1 Brian A. Konecke,1,5 Fernando Barra,3,4 Martin Reich,3,4 Mathieu Leisen,3,4 and Tristan M. Childress1 1Department of Earth and Environmental …
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An executable program of the classifiers used to train different machine learning (ML) classifiers, including random forest, support vector machine, and multilayer perceptron neural network, to predict the genetic type of ore deposits meets the requirements for ore deposit-type classification. Expand
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deposit in Chile that supports the model of Knipping et al. (2015a,b), pointing to a combination of efficient magmatic and hydrothermal processes of Fe concentration. The …
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Discover Magnetite Mines' flagship Razorback Iron Ore Project, poised to produce high-grade and DR-grade iron ore for low-carbon and zero-carbon steel production. Owned by ASX-listed Magnetite Mines Limited, the project boasts 2 billion tonnes of Probable Ore Reserves and 3.2 billion tonnes of Mineral Resources. Located near Adelaide with …
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The origin of magnetite-(apatite) iron deposits (MtAp) is one of the most contentious issues in ore geology with competing models that range from hydrothermal to magmatic processes.Here we report ...
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Abstract. The textures of outcrop and near-surface exposures of the massive magnetite orebodies (>90 vol % magnetite) at the Plio-Pleistocene El Laco iron oxide …
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To better understand the origin of the Andean iron oxide-apatite (IOA) deposits, we conducted a study on the geology and magnetite geochemistry of the Mariela IOA deposit in the Peruvian Iron Belt, central Andes. The Mariela deposit is hosted by gabbroic and dioritic intrusions. The major high-grade massive ores are primarily …
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Introduction. Apatite [Ca 10 (PO 4) 6 (F, Cl, OH)] is a common accessory mineral in igneous rocks, with usually less than 1% modal abundance (Piccoli and Candela, 2002, Spear and Pyle, 2002, Patiño Douce and Roden, 2006), but can constitute a major phase in iron oxide-apatite (IOA) or "Kiruna-type" deposits. These mineral deposits …
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Apatite grains from the Los Colorados iron oxide–apatite (IOA) deposit, the largest IOA deposit in the Chilean Iron Belt (CIB), exhibit significant intracrystalline …
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