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.
Jacobsite-Magnetite Series. Magnesioferrite-Magnetite Series. Magnetite is an important, strongly magnetic iron ore, along with hematite. Nanoinclusions of magnetite crystals cause the iridescence of Rainbow obsidian (Nadin, 2007). Extremely thin layers of 200-nm octahedral crystals of magnetite give some basalt surfaces an iridescent sheen (Nadin, …
In this paper, we discuss the genesis of magnetite, controlling factors for magnetite compositions, and type of ore genesis based on petrographic studies and LA-ICP-MS analyses of trace elements ...
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.. …
Although the details of these parameters are not well constrained for all the ore deposits we sampled, we can use existing petrology from key samples, and limited experimental data on fluid compositions and spinel solid solutions to understand some of the trace element trends in hydrothermal magnetite. Titanium is a common element in …
Trace element concentrations in magnetite and pyrite demonstrate that the ore-forming fluid in Hetaoping is of magmatic origin. Furthermore, compared to porphyry, IOCG, Kinuna and BIF type magnetite, the magnetite from Hetaoping has relatively low Ti, V and Ni concentrations but high Al, Mn and Ca concentrations, implying a typical skarn …
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. ... Therefore, the evolution of hydrothermal fluids deduced from trace elements of magnetite can provide meaningful insights into …
Mean sample values of major and trace elements in magnetite from the different ore-types are documented in Table 1 and mean values of every analysed grain are shown in the Supplementary material. Generally, all incompatible trace element contents similarly increase from interior to rim in the different ore-types representing internal …
Magnetite is an iron mineral, specifically, it's an oxidized form of a balanced blend of iron ions. It contains both divalent (Fe²+) ions and trivalent (Fe³+) ions. It's most commonly seen as octahedral …
Magnetite is an important, strongly magnetic iron ore, along with hematite. Nanoinclusions of magnetite crystals cause the iridescence of Rainbow obsidian (Nadin, 2007). …
In recent years, magnetite trace elements have increasingly been applied in studies into ore deposits. The magnetite trace element characteristics of different deposit types have been summarized, but to date no satisfactory explanation has been obtained as to why magnetite samples from some iron oxide-apatite (IOA) deposits exhibit similar …
Magnetite trace-element geochemistry can provide important insights into the nature of ore-forming magma or hydrothermal fluids, including their possible source, geochemical features and evolutionary histories (Beaudoin and Dupuis, 2009, Carew, 2004, Dare et al., 2015, Nadoll et al., 2012, Nadoll et al., 2014, Nadoll et al., 2015).Magnetite …
Use of Magnetite as an Ore of Iron. Most of the iron ore mined today is a banded sedimentary rock known as taconite that contains a mixture of magnetite, hematite, and chert. Once considered a waste material, taconite became an important ore after higher grade deposits were depleted. Today's commercial taconites contain 25 to 30% iron by …
The iron oxide-apatite (IOA) deposits near Mineville in the Adirondack Mountains, New York, have been of interest for their rich magnetite ore since the mid-1700s but have attracted renewed attention due to their potential as rare earth element (REE) resources (McKeown and Klemic, 1956; Lupulescu and others, 2016; Taylor and …
In this paper, we discuss the genesis of magnetite, controlling factors for magnetite compositions, and type of ore genesis based on petrographic studies and LA-ICP-MS analyses of trace elements in these four types of magnetite from the Huanggangliang Sn-Fe deposit. The results demonstrate that the four types of …
The metal elements with high content in the samples include Fe, Ca, Mg and Mn. There are also other metal elements such as Ce, Na, Ba, etc. Since XRF does not detect elements with atomic numbers lower than F, the test data is only the relative proportion of each element rather than their actual mass fraction in the original ore.
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 …
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 of magnetite have been identified. Mt1 is commonly replaced by porous Mt2, and both are commonly trapped in the core of Mt3, which is characterized by both core-rim textures …
The Makeng iron deposit in southwest Fujian is a significant iron polymetallic deposit containing various types of iron ore, including garnet magnetite, diopside magnetite, and quartz magnetite. The metallogenetic type of the deposit has been a subject of debate, particularly in relation to the genesis of magnetite and the source of …
1. Introduction. Magnetite is concentrated in a wide variety of ore deposit types including IOCG (iron oxide–copper–gold), IOA (iron oxide-apatite), iron skarn, BIF (banded iron formation), and magmatic Fe-Ti oxide, and in some cases is the dominant ore mineral (Williams et al., 2005, Dupuis and Beaudoin, 2011, Knipping et al., 2015, Liu et …
The most recent studies have used trace elements in magnetite to trace the conditions of ore formation, such as temperature, pressure, oxygen fugacity, and cooling rate (e.g., Mollo et al., 2013, Nadoll et al., 2014, Canil et al., 2016).A variety of elemental diagrams, or so-called discriminant diagrams, have been developed to allow the use of …
Remobilization of trace elements during the replacement of massive sulfides by magnetite might form the cores free of trace elements (e.g., Boucher, 2011), whereas, the Si enrichment in magnetite rims could be either the consequence of the replacement of pre-existing quartz gangue in the massive pyrrhotite ore (Boucher, 2011), or the …
Magnetite is a naturally occurring mineral that is one of the most common ironores and is widely distributed throughout the world. It is a black, metallic-looking mineral with a distinctive magnetic property, hence its name. Magnetite has the chemical formula Fe3O4, which means it …
Magnetite samples from Gwanin Fe-Ti oxide deposit in South Korea were collected to identify the deposit origin and to understand the ore-forming processes. Based on the macro- and micro-scale observation, the Fe-Ti oxide ores were divided into olivine-bearing massive ore, biotite-bearing massive ore, banded ore and skarn ore. Trace …
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 of magnetite have been identified. Mt1 is commonly replaced by porous Mt2, and both are commonly trapped in the core of Mt3, which is characterized by both core-rim textures …
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. ... Trace element geochemistry of magnetite: Implications for ore genesis of the Talate skarn Pb-Zn (-Fe) deposit, Altay, NW China. Ore Geol. Rev., 100 (2018), …
Trace element compositions of magnetite from ore zones were determined by in situ laser ablation inductively coupled plasma mass spectrometry (LA–ICP–MS). The new dataset provides a better understanding of trace element behavior in magnetite during the skarn formation process.
The Makeng iron deposit is located in the Yong'an-Meizhou depression belt in Fujian Province, eastern China. Both skarn alteration and iron mineralization are mainly hosted within middle Carboniferous-lower Permian limestone. Five paragenetic stages of skarn formation and ore deposition have been recognized: Stage 1, early skarn …
Use of Magnetite as an Ore of Iron. Most of the iron ore mined today is a banded sedimentary rock known as taconite that contains a mixture of magnetite, hematite, and …
The Thanewasna copper belt in Bastar Craton of central India is well-known for Cu ± Au mineralization. In this study, we use major and trace element chemistry of magnetite, hematite, and pyrite, as well as the sulfur isotope composition of chalcopyrite, pyrite and barite from the deposit to characterize the mineralization and to constrain its …
General Magnetite Information. Iron 72.36 % Fe 31.03 % FeO / 68.97 % Fe 2 O 3. Oxygen 27.64 % O. Common accessory mineral in igneous and metamorphic rocks. Can be …
Binary plots of magnetite trace element concentrations. A-C) type1 and type2 magnetite show different Ti, Sc, Mg and Si concentration; D-L) binary plots …
El Laco ore magnetite have low trace element concentrations and displays growth zoning in incompatible elements (Si, Ca, and Ce), compatible elements (Mg, Al, and Mn), large-ion lithophile …
As its name implies, it is magnetic; it and other inherently magnetic iron-containing minerals are described as being ferrimagnetic. Magnetite is in the hexoctahedral crystal class; in the 3-D crystal …
