Thermal evolution of Andean iron oxide–apatite (IOA
Huang, X. & Beaudoin, G. 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 ...
Ore Minerals | Formation, Genesis, Occurrence
Ore minerals are naturally occurring minerals that contain valuable elements or minerals in sufficient quantities to be economically mined and processed for their desired metal or mineral content. These minerals are typically extracted from the Earth's crust and processed to obtain the valuable elements or minerals for various industrial, …
Mineralogy and Geochemistry of a Vanadiferous Titano-Magnetite …
The mineralogical and geochemical characters of the vanadiferous titano-magnetite and associated copper ore are described for the first time in this paper. ... Vanadiilm is the dominant minor element in the magnetite-gabbro and magnetite bands; it ranges fron 0.23 - 0.93%. Optical studies have not disclosed the 3+ presence of any …
Fluid evolution of the Nulasai Cu deposit, Xinjiang, NW …
The majority of the copper deposits in the western Awulale belt are hosted in Permian sedimentary strata and late mafic and felsic dikes (Zhao et al., 2018, Liu and …
Mineral chemistry of magnetite from magnetite-apatite …
Interpretation of the mineralizing environment of magnetite-apatite deposits remains controversial with theories that include a hydrothermal or magmatic origin or a combination of those two processes. To address this controversy, we have analyzed the trace element content of magnetite from precisely known geographic locations and …
Trace elements in magnetite as petrogenetic indicators
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, …
A Continuum from Iron Oxide Copper-Gold to Iron Oxide …
Magnetite is the modally dominant and commodity mineral in IOA deposits, whereas magnetite and hematite are predominant in IOCG deposits, with copper sulfides being the primary commodity minerals. It is generally accepted that IOCG deposits formed by hydrothermal processes, but there is a lack of consensus for the source of the ore …
Magnetite
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-cleaning' of the magnetic concentrate from the first stage.
Trace Element Geochemistry of Magnetite from the Fe(‐Cu) …
Magnetite from the Heifengshan and Shuangfengshan Fe deposits has similar normalized trace element spider patterns and cannot be discriminated according …
(PDF) Trace element fractionation in magnetite as a …
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 ...
Magnetite | Magnetic Properties, Iron Oxide, Magnetism
magnetite, iron oxide mineral (FeFe 2 O 4, or Fe 3 O 4) that is the chief member of one of the series of the spinel (q.v.) group.Minerals in this series form black to brownish, metallic, moderately hard octahedrons and masses in igneous and metamorphic rocks and in granite pegmatites, stony meteorites, and high-temperature sulfide veins. …
Formation of massive iron deposits linked to explosive volcanic
Dissolution–reprecipitation process of magnetite from the Chengchao iron deposit: Insights into ore genesis and implication for in-situ chemical analysis of magnetite. Ore Geol. Rev. 57, 393 ...
Magnetite | Common Minerals
By far, the two most economically important iron ores are hematite and magnetite. Although hematite is more abundant than magnetite, magnetite has the higher iron content, so magnetite iron ore deposits are highly sought after. Economic magnetite deposits primarily occur in layered igneous rocks that formed from the slow cooling of …
Magnetite : Properties, Occurrence, Formation, Deposits
Magnetite is rock mineral and one of the most important iron ore minerals with chemical formula is iron(II,III) oxide, Fe2+Fe3+2O4 .It also as the name magnetic minerals to attracted to a magnet. It is the most magnetic natural occuring minerals in the World. Small grains of magnetite occur in almost all igneous and metamorphic rocks.. …
Formation of iron oxide–apatite deposits | Nature Reviews …
Huang, X. W. & Beaudoin, G. 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 ...
Thermal evolution of Andean iron oxide–apatite (IOA
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. …
Insight into the Origin of Iron Ore Based on Elemental …
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 …
Trace element characteristics of magnetite: Constraints on …
Magnetite occurs as an ore mineral in many types of deposits and its trace element characteristics can be used to fingerprint various types of mineral deposits and distinguish different ore forming processes. ... Ti–P deposits, andesite, and I-type granite), high-temperature hydrothermal settings (>500 °C, e.g., iron–oxide–copper–gold ...
Magnetite as an Indicator Mineral in the Exploration of …
At least 100 magnetite grains were randomly selected from the magnetic fraction of each till sample. Nineteen trace elements in ~50 magnetite grains in each sample were measured by laser ablation-inductively coupled plasmamass spectrometry (LA …
Magnetite texture and trace-element geochemistry …
The Xinqiao Cu-Fe-Au deposit in the Tongling ore district is a typical stratabound ore body characterized by multi-stage magnetite. A total of six generations …
In situ major and trace element analysis of magnetite from …
Magnetite (Fe 3 O 4) is one of the most common accessory minerals in magmatic rocks, and it can accommodate a wide variety of major, minor and trace elements that can be measured by laser ablation ICP-MS.In this study, we investigate the chemical compositions of magnetite from four carbonatite complexes (Oka, Mushgai …
Textures and Chemical Compositions of Magnetite from Iron Oxide Copper
Textural and compositional data of magnetite from Igarapé Bahia, Alemao, Sossego, Salobo, and Candelaria iron oxide copper-gold (IOCG) and El Romeral Kiruna-type iron oxide-apatite (IOA) deposits show that some magnetite grains display oscillatory zoning or have been reequilibrated by oxy-exsolution, coupled dissolution and …
Formation of giant iron oxide-copper-gold deposits by
Iron oxide-copper-gold (IOCG) systems are among the world's richest mineral deposits, making for highly profitable mining operations 1,2,3.By-product strategic elements including Co, U and Rare ...
Magnetite chemistry and implications for the magmatic-hydrothermal ore
There is a consensus that co-precipitating minerals can affect compositions of some certain trace elements in magnetite due to different partition coefficients between magnetite and coexisting minerals ... geochemistry, and Sr–Nd–Hf isotopes of granitoids in the Yulekenhalasu copper ore district, northern Junggar, China: petrogenesis and ...
Rare earths and other trace elements in minerals from skarn …
2. Background2.1. The Olympic IOCG Province. The Olympic IOCG Province is the world's most richly-endowed IOCG ore province. It includes the super-giant Olympic Dam deposit, Prominent Hill, Carrapateena, Punt Hill, and other prospects (Hayward and Skirrow, 2010).The province (Fig. 1 a) is located along the eastern margin of the Gawler …
Trace element characteristics of magnetite: Constraints on …
Magnetite occurs as an ore mineral in many types of deposits and its trace element characteristics can be used to fingerprint various types of mineral deposits and …
New contributions to the understanding of Kiruna-type iron …
The magnetite ore body at the El Romeral comprises an aggregate of massive magnetite (>95% modal) with actinolite found mainly at the margins of the ore body. ... Regional geologic and petrologic framework for iron oxide ±apatite ±rare earth element and iron oxide copper-gold deposits of the Mesoproterozoic St. Francois …
The chemistry of hydrothermal magnetite: A review
Our database includes published and previously unpublished magnetite minor and trace element data for magnetite from (1) banded iron formations (BIF) and related high-grade iron ore deposits in Western Australia, India, and Brazil, (2) Ag–Pb–Zn veins of the Coeur d'Alene district, United States, (3) porphyry Cu–(Au)–(Mo) deposits …
Magnetite texture and trace element evolution in the …
Previous studies classified it as a skarn (Song, 1985, Xu et al., 2010), or an iron oxide-copper–gold (IOCG) (Huang et al., 2013a), or a submarine volcanogenic iron …
In-situ LA-ICP-MS trace elemental analyses of magnetite: Cu …
In the multi-element diagram, the magnetite in Cu-sulfide ores has patterns characterized by relatively enriched V and Cr, but for the patterns of other elements, magnetite of Cu-sulfide ores is undistinguishable from those in Fe-oxide ores (Fig. 5 c). 6. Discussion6.1. Nature of different types of magnetite in the Khetri copper belt