Current magnetite production is a by-product of the copper operations and as such is recovered from the Concentrator floatation tails stream by magnetic separation. Approximately 15%, by weight, of magnetite is removed by 'cleaning' and 're …
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A Continuum from Iron Oxide Copper-Gold to Iron Oxide-Apatite Deposits: ... ore ˚uid(s). There are multiple competing hypotheses for the formation of IOA deposits, with models that range ... Trace element concentrations in magnetite systemati-cally increase with depth in both deposits and decrease from core to rim within magnetite grains in ...
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We have characterized the distribution of 25 trace elements in magnetite (Mg, Al, Si, P, Ca, Sc, Ti, V, Cr, Mn, Co, Ni, Cu, Zn, Ga, Ge, Y, Zr, Nb, Mo, Sn, Hf, Ta, W, and Pb), using laser ablation ICP-MS and electron microprobe, from a variety of magmatic and hydrothermal ore-forming environments and compared them with data from the literature. We propose a new …
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This paper presents new data of magnetite compositions, acquired using LA–ICP–MS analyses coupled with detailed classification and texture investigation from …
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The subtle variations of trace element concentrations within a magnetite grain and between the magnetite grains in the same sample probably indicate local inhomogeneity of ore–forming fluids. The variations of Co in magnetite between samples are probably due to the mineral proportion of magnetite and pyrite.
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Dare et al., Nadoll et al. and Pisiak et al. acquired major and trace element analyses of magnetite from a variety of igneous, porphyry and skarn environments. They used element ratios and statistical data exploration to demonstrate how magnetite compositions can effectively discriminate magnetite of diverse origins (e.g. Fig. 8).
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Minor and trace element compositions of magnetite in these samples are similar to magnetite from igneous rocks and magmatic-hydrothermal systems. Magnetite grains from deeper zones of the orebodies contain >1 wt % titanium, as well as ilmenite oxyexsolution lamellae and interstitial ilmenite. ... The ore-forming magnetite-fluid suspension would ...
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This paper documents element mobility patterns from a magnetite-group Iron Oxide Copper–Gold (IOCG) prospect in the Northwest Territories of Canada and explores …
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2.1. Island Copper. Island Copper is a Cu–Mo–Au deposit hosted in a Jurassic (165 Ma) calc-alkaline monzonite stock and rhyodacite dykes that intrude Bonanza Group volcanic rocks of the Wrangellia Terrane (Perelló et al., 1995, Friedman and Nixon, 1995).Skarn and vein-style mineralization is locally prominent. Most ore at Island Copper is associated …
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1. Introduction. Pyrite (FeS 2) is one of the most common reducing minerals and is widely found in various rock types in the Earth's crust.Magnetite (Fe 3 O 4), an oxide, is also ubiquitous in various types of rocks and mineral deposits.Both minerals can preserve the historical evidence of ore body evolution from initial deposition to later deformation and metamorphism, …
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The physico-chemical conditions of the magmatic evolution estimated from amphibole, biotite, magnetite-ilmenite mineral thermobarometer indicate that the monzonite and porphyritic granite magma ...
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Textures and Chemical Compositions of Magnetite from Iron Oxide Copper-Gold (IOCG) and Kiruna-Type Iron Oxide-Apatite (IOA) Deposits and Their Implications for Ore …
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The trace element composition of igneous and hydrothermal magnetite from 19 well-studied porphyry Cu ± Au ± Mo, Mo, and W-Mo deposits was measured by laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) and then classified by partial least squares-discriminant analysis (PLS-DA) to constrain the factors explaining the relationships …
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An ore is a mineral deposit that contains a metal that can be extracted using existing technological methods. Iron can be extracted from two types of iron ores: Magnetite and hematite. Magnetite is composed of iron in the form of Fe 3 O 4. Hematite is a mineral that contains iron in the form of Fe 2 O 3. The primary distinction between ...
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The Bipindi iron ore district is located in the central section of the Nyong Complex at the northwestern margin of the Congo Craton in Southwest Cameroon. This iron district contains numerous iron mineralization hosted by the Mewongo, Bibole, Kouambo, and Zambi banded iron formations (BIFs). These BIFs contain magnetite as the main iron ore mineral …
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In other words, if the recognised ore-bodies are magmatic-hydrothermal, they must be classified as distal deposits. The magnetite copper-phosphate-rare earth element pipe-like carbonatite-hosted orebody at Loolekop, within the larger Phalabowra Carbonatite Complex, has many features to suggest that it represents an end member of the Olympic Dam ...
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Opaque minerals of common granitic rocks were studied microscopically. The granitoids were divided into (i) a magnetite-bearing magnetite-series and (ii) a magnetite-free ilmenite-series. Each series has the following characteristic assemblages of accessary minerals: Magnetite-series: Magnetite (0.1-2 vol.%), ilmenite, hematite, pyrite, sphene, epidote, high ferric/ferrous …
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The trace element composition of primary magnetite from 2 samples of the Newcastle Porphyry provides an important comparison to magnetite from calcic Fe skarn and massive magnetite. For example, the concentrations of Ti, Al, V, Cr, and Ni in porphyry samples average 10,500, 16,500, 3000, 160, and 18 ppm, respectively.
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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 learning …
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This paper explores the geological relationships, mineralogical and geochemical characteristics, and quantitative elemental mass balance constraints of the hydrothermal alteration zones within the uraniferous Surda copper deposit in the Singhbhum Shear Zone in eastern India, which is affiliated with an iron oxide–copper–gold system.
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Explanation: The predominant ore of copper is chalcopyrite (CuFeS 2). Hematite, magnetite and siderite are ores of iron. Hematite, magnetite and siderite are ores of iron. 2.
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The trace element contents in magnetite generally vary less than one order of magnitude. The subtle variations of trace element concentrations within a magnetite grain …
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Trace element and isotope investigations of the different ore types reveal two major groups of magnetite: Group I, represented by the massive, partly brecciated ores from both deposits, is ...
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we need magnetite with total Fe more than 54% and FeO more than 15% to qingdao port,china in large qty, if you can supply,pls email me zzzybiz1@recycles
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Magnetite is a common accessory mineral and forms over a wide range of geologic conditions (sedimentary, magmatic or hydrothermal) and can incorporate various trace elements in its cubic spinel structure (Dare et al., 2014, Dupuis and Beaudoin, 2011, Nadoll et al., 2012).In-situ magnetite analysis and comparison between magmatic and hydrothermal magnetite …
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Although magnetite crystals of a single type may accommodate a wide range of trace elements, general trend among elements in various types of magnetite can still be related to their forming conditions, such as temperature, fO 2, coexisting mineral assemblages, and fluid compositions.In this study, the incorporation of Ti, Si, Al, Ba, Ta, and Sc into magnetite is …
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Magnetite is common in various magmatic and hydrothermal ore deposit types, and its trace element geochemistry has become increasingly used in ore genesis studies and mineral exploration. While fractional crystallization has been shown to influence the chemistry of igneous magnetite, the extent to which this process regulates the trace element ...
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The magnetite mineralization mainly occurs as massive iron ores, partly with columnar-network or flow textures, and as disseminated magnetite ores. Trace element and isotope investigations of the different ore types reveal two major groups of magnetite: Group I, represented by the massive, partly brecciated ores from both deposits, is enriched ...
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of copper ore and iron ore to form a new oxygen carrier, which can benefit the synergic effect of copper and iron [21,24]. In this case, some new attempts have been carried out to combine copper ore and iron ore and redmud using a cement binder through simple mechanical mixing [25,26] or an extrusion–spheronization method [27]. In these works,
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Porphyry copper deposits (PCDs) supply the majority of the world's copper (Cu) as well as significant amounts of molybdenum (Mo) and gold (Au). The formation of these deposits is controlled by a variety of geological factors, among which the magmatic oxidation is one of the focuses of current research. This study investigates the redox characteristics of arc magmas …
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