We present detailed textural and compositional data on magnetite from the Paleozoic Shuanglong Fe-Cu deposit to constrain the formation of iron oxides and the evolution of the ore-forming fluids and thus define the genesis of the Fe-Cu ores.
In this paper, we expand the study of trace elements in hydrothermal magnetite from porphyry and skarn deposits by examining settings in the Canadian Cordillera, one of …
The above succession of serpentinite (after dunite)–peridotite–pyrox- results corroborate our previous results based on major- enite and gabbro with bands of titaniferous magnetite ore. element characteristics of the chromites, where the calcu- The chromitite ore-bodies (length 30–500 m; width lated parental melt of the Byrapur chromites ...
The project main objectives are to: 1) geologically, characterize the setting and origin of the iron-copper-cobalt-gold-rare earth element deposits, and advance the knowledge of rare earth element and Co potential within iron oxide-copper-gold (IOCG) deposits of southeast Missouri, and 2) geophysically delineate and characterize the subsurface Precambrian …
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 …
Porphyry-related copper, gold and molybdenum deposits, and their related epithermal gold, silver ± copper ore zones, continue to be attractive exploration targets for major mining companies, with a notable increase in discoveries …
This paper presents new data of magnetite compositions, acquired using LA–ICP–MS analyses coupled with detailed classification and texture investigation from …
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 …
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 …
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.
This study demonstrates that detailed texture examination and in situ trace-elements analysis under robust geological and petrographic frameworks can effectively …
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 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 …
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.
The Paleoproterozoic Great Bear magmatic zone is the focus of ongoing exploration for iron oxide copper-gold (IOCG) deposits and also hosts iron ... important geochemical differences in V, Ni, Cr, and Co concentrations within the magnetite. Variations of trace elements in magnetite from ... the Cr/Co ratio is higher in barren and pre-ore ...
The temperature (T) and oxygen fugacity (fO 2) dependence of minor and trace elements (Mg, Al, Mn, Cr, Ni) in magnetite (Mag) in equilibrium with water-bearing silicate liquids varying in composition from basalt to rhyolite (49–77 wt% SiO 2) is examined in a compilation of experimental data (n = 299) from 700 to 1050 °C, 50–900 MPa and five order of magnitude …
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 ...
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 …
Of the determined elements in magnetite, S, Si, Na, K, Ca, and Cu were monitored to exclude the analyses from impure magnetite and inclusions of silicate and/or sulfide minerals. ... Magnetite chemistry by LA-ICP-MS records Sulfide fractional crystallization in massive nickel-copper-platinum group element ores from the norilsk-Talnakh Mining ...
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 …
What is the role of silica in the extraction of copper? Which form of the iron is the purest form of commercial iron? Name the method used for refining of copper metal. Which of the ores mentioned can be concentrated by magnetic separation method? Write the names and chemical formulae of any 'two' minerals of aluminium.
This paper documents element mobility patterns from a magnetite-group Iron Oxide Copper–Gold (IOCG) prospect in the Northwest Territories of Canada and explores …
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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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.
· Features: The best iron ore, the strongest magnetic ore. Magnetite rock is the most commonly mined iron ore: Virtual hematite and semi-artificial hematite: Magnetite oxidizes to hematite, but retains the crystalline form of magnetite. ... · Limonite chemical formula: FeO(OH) n(H2O) · Iron content: up to 59.8% · Color: Light yellow (tan ...
Magnetite is the most common ore mineral in magmatic and hydrothermal iron-rich deposits (e.g., Fe-Ti oxide, iron oxide copper gold (IOCG), porphyry, skarn, and iron oxide apatite (IOA or Kiruna-type)) (Dupuis and Beaudoin, 2011, Dare et al., 2012, Dare et al., 2014, Nadoll et al., 2014).The texture and geochemistry of magnetite vary considerably from different ore …
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 ...