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magmatic iron deposits

magmatic iron deposits

A Deposit Model for Magmatic Iron-Titanium-Oxide

2013-7-24  A Deposit Model for Magmatic Iron-Titanium-Oxide Deposits Related to Proterozoic Massif Anorthosite Plutonic Suites. By Laurel G. Woodruff, Suzanne W. Nicholson, and David L. Fey. Scientific Investigations Report 2013–5091. U.S. Department of the Interior U.S. Geological Survey

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(PDF) Magmatic iron ores and associated mineralisation ...

iron deposits in the Coastal Cordillera of Chile also have features that suggest a magmatic origin. Associated with these magmatic ore deposits are economic and sub

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Mesozoic magmatic–hydrothermal iron oxide deposits

Mesozoic magmatic-hydrothermal iron oxide (MHIO) deposits in Mexico have been identified either (1) in regions close to the paleo-Pacific convergent margin, in Baja California and southwestern-southern Mexico, and (2) in regions several hundreds of kilometers

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A deposit model for magmatic iron-titanium-oxide

This descriptive model for magmatic iron-titanium-oxide (Fe-Ti-oxide) deposits hosted by Proterozoic age massif-type anorthosite and related rock types presents their geological, mineralogical, geochemical, and geoenvironmental attributes. Although these Proterozoic rocks are found worldwide, the majority of known deposits are found within exposed rocks of the Grenville Province, stretching ...

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Magmatic Ore Deposits - BU

2020-8-4  Magmatic Ore Deposits: A number of processes that occur during cooling and crystallization of magmatic bodies can lead to the separation and concentration of minerals. 1-Pegmatites 2-Layered intrusions 3-Kimberlites Examples of Magmatic ore deposits: 1-Chromite deposits 2-Nickel ŒCopper deposits 3-Platinum group metal (PGM) deposits

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Magmatic Ore Deposits PDF Magma Rock (Geology)

2014-10-16  Magmatic Ore Deposits. Magmatic ore deposits are those which are formed during crystallization of a magma, deep underground. The host rock for the mineralization can range from ultramafic to felsic. The deposit can consist of massive ores in some cases, and disseminations of rare minerals in others. In the case of more massive ores, there are three primary means of concentrating

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Magmatic Deposits Article about Magmatic Deposits by

Much less frequently magmatic deposits may occur in the form of flows that issue from volcanic vents (for example, volcanic sulfur flows). The most important beds in magmatic deposits are those of iron, titanium, vanadium, chromium, platinum, copper, nickel, cobalt, apatite,

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Formation of giant iron oxide-copper-gold deposits by ...

2021-9-15  Iron oxide-copper-gold deposits are a globally important source of copper, gold and critical commodities. However, they possess a range of characteristics related to a

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The Pilot Knob iron ore deposits in southeast Missouri ...

The iron ore deposits in southeast Missouri have been divided into 4 different types based on the mode of occurrence and metal endowment: (1) Volcanic-hosted iron oxide deposits of magmatic and/or magmatic-hydrothermal origin and similar to “Kiruna-type” deposits; examples include the Pilot Knob Magnetite, Iron Mountain, Pea Ridge, and ...

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Mineral Ore Deposits: Meaning, Origin and Types Geology

2021-11-20  Mineral deposits may occur independently forming layers and bodies of different shapes extending for many kilometers in areal extent and upto many meters in depth. Sedimentary deposits of iron oxides and hydrous aluminum oxide are of this type. In other cases, the ore deposits (or more precisely ore minerals) may be present in an enclosing rock ...

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A deposit model for magmatic iron-titanium-oxide

This descriptive model for magmatic iron-titanium-oxide (Fe-Ti-oxide) deposits hosted by Proterozoic age massif-type anorthosite and related rock types presents their geological, mineralogical, geochemical, and geoenvironmental attributes. Although these Proterozoic rocks are found worldwide, the majority of known deposits are found within exposed rocks of the Grenville Province, stretching ...

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Magmatic Ore Deposits in Layered

2012-2-7  Layered, ultramafic to mafic intrusions are uncommon in the geologic record, but host magmatic ore deposits containing most of the world’s economic concentrations of platinum-group elements (PGE) (figs. 1 and 2). These deposits are mined primarily for their platinum, palladium, and rhodium contents (table 1).

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20.1 Metal Deposits – Physical Geology – 2nd Edition

A magmatic deposit is one in which the metal concentration takes place primarily at the same time as the formation and emplacement of the magma. Most of the nickel mined in Canada comes from magmatic deposits such as those in Sudbury (Ontario), Thompson

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Iron and Manganese Ore Deposits: Mineralogy,

2020-8-18  2. Iron Ore Deposits Iron ore deposits are known to occur in sedimentary, hydrothermal, and magmatic environments, but production today is almost entirely from three types of deposit: deposits related to Precambrian banded iron formations provide about 90% of all iron ore mined, and the remainder is derived from metasomatic skarn and magmatic

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CHAPTER-5 GEOCHEMISTRY OF IRON ORES

2012-8-16  I- Magmatic magnetitic Iron Ore: magnetitic iron ore with ilmenite associated with basaltic suite of rocks (e.g. gabbro, anorthosite, florae) 2- Sedimentary iron ore deposits: (i) Iron stones: They are non-cherty, oolitic, poorly banded, and largely of Phanerozoic age

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Evidence for iron-rich sulfate melt during magnetite ...

“Kiruna-type” magnetite-(apatite) [Mt(-Ap)] deposits (referring to the deposit at Kiruna, Sweden) are major resources of iron, but their genesis is vigorously debated. Some argue for a hydrothermal origin, whereby veins, breccias, and replacement zones are formed by circulation of hot aqueous fluids of magmatic or basinal derivation ...

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Triple oxygen isotope variations in magnetite from iron ...

The available iron isotope data for magnetite from the deposits in the Yazd and Sirjan areas (δ 56 Fe = 0.2‰–0.5‰) indicate a high-temperature magmatic (e.g., ≥800 °C) rather than a low-temperature hydrothermal origin for the magnetite (Troll et al., 2019; Alibabaie et al., 2019, personal commun.). We therefore propose two geological ...

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Mineral Ore Deposits: Meaning, Origin and Types Geology

2021-11-20  Mineral deposits may occur independently forming layers and bodies of different shapes extending for many kilometers in areal extent and upto many meters in depth. Sedimentary deposits of iron oxides and hydrous aluminum oxide are of this type. In other cases, the ore deposits (or more precisely ore minerals) may be present in an enclosing rock ...

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Magmatic Conduit Metallogenic System - A New Model

Origin and emplacement processes of ore-deposits connected with intrusions remains poorly understood. Here we propose a new model 'Magmatic Conduit Metallogenic System' to explain the origin of ore-deposits. Magmatic flow (or Melt-fluid flow) bearing metals will finally settle in the conduits at later stage of magma evolved in magma metallogenic system.

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Facies analysis of a 1.9 Ga, continental margin, back-arc ...

Except for the apatite-bearing iron deposits, it is uncertain if the ores are genetically related to specific magmatic hydrothermal events from specific volcanoes. This is possible, especially for the base metal sulfide deposits, which have intense localized footwall alteration in felsic volcanic rocks.

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Magmatic iron ores - Naturhistoriska riksmuseet

2017-5-12  Magmatic iron ores in Chile and Sweden. Jan-Olov Nyström. A comparison between the Kiruna iron ores in Sweden and the magmatically formed El Laco iron deposit in Chile sheds new light on the controversial issue about the formation of the Kiruna deposits (magmatic vs. hydrothermal).

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(PDF) Magnetita Pedernales; a new magmatic iron deposit

Although not as well preserved, similar magmatic iron ore deposits occur in the High Andes of Chile at Incahuasi and Magetita Pedernales, and at numerous localities in the Cretaceous iron belt ...

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Magmatic ore deposits (Chapter 2) - Ore Deposit Geology

Magmatic ore deposits, also known as orthomagmatic ore deposits, are deposits within igneous rocks or along their contacts in which ore minerals crystallised from a melt or were transported in a melt. Ore deposits that form in and around igneous rock units as

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20.1 Metal Deposits – Physical Geology – 2nd Edition

A magmatic deposit is one in which the metal concentration takes place primarily at the same time as the formation and emplacement of the magma. Most of the nickel mined in Canada comes from magmatic deposits such as those in Sudbury (Ontario), Thompson

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Iron-rich melts, magmatic magnetite, and superheated ...

2016-6-1  Iron-rich melts, magmatic magnetite, and superheated hydrothermal systems: The El Laco deposit, Chile Fernando Tornos; Fernando Tornos * 1. Centro de Astrobiología (CSIC-INTA). Ctra. de Torrejón a Ajalvir, km 4.5, 28850 Torrejón de Ardoz, Madrid, Spain * E-mails: f ...

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CHAPTER-5 GEOCHEMISTRY OF IRON ORES

2012-8-16  I- Magmatic magnetitic Iron Ore: magnetitic iron ore with ilmenite associated with basaltic suite of rocks (e.g. gabbro, anorthosite, florae) 2- Sedimentary iron ore deposits: (i) Iron stones: They are non-cherty, oolitic, poorly banded, and largely of Phanerozoic age

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The role of volatiles in the formation of magmatic iron ...

h2020,iron_deposits,msca-if-2014-ef,gottfried wilhelm leibniz universitaet hannover(de)

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Geological settings and metallogenesis of high-grade iron ...

The predominant types of high-grade iron deposits in China include skarn, sedimentary metamorphic (banded iron-formation, BIF-type), continental/submarine volcanic-hosted and magmatic Fe-Ti-V oxide deposits. Based on a comprehensive review of current studies on these deposits, this paper suggests that the oxygen concentration in atmosphere played an important role for the formation of BIFs ...

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"The Pilot Knob Iron Ore Deposits in Southeast Missouri ...

2021-4-1  The Mesoproterozoic St. Francois Mountains igneous terrane in southeast Missouri, USA, contains eight major and several minor IOA/IOCG-type deposits. This study focuses on the Pilot Knob deposits, i.e., the largely massive Pilot Knob Magnetite (PKM) deposit and the Pilot Knob Hematite (PKH) deposit, which is located 240 m stratigraphically above the PKM and consists of variably mineralized ...

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Facies analysis of a 1.9 Ga, continental margin, back-arc ...

Except for the apatite-bearing iron deposits, it is uncertain if the ores are genetically related to specific magmatic hydrothermal events from specific volcanoes. This is possible, especially for the base metal sulfide deposits, which have intense localized footwall alteration in felsic volcanic rocks.

Read More