magmatic iron deposit
Ore deposits produced by magmatic segregation, with ...
Type deposits of iron, chromium, aluminum, and diamond that have been formed by magmatic segregation are discussed, and conditions favorable for the formation of deposits of gold, silver, lead, zinc, tin, and other rare metals as a result of extreme differentiation are given. In conclusion the problem of differentiation of rock magmas
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Iron isotope fractionation during magmatichydrothermal ...
Keywords: Fe isotope; Magmatichydrothermal evolution; Porphyry CuAu deposit; Duolong; Tibet 1. INTRODUCTION It is well known that metalrich fluids exsolved from oxidized and reduced magmas play a key role in the formation of various types of hydrothermal ore deposits, including porphyry Cu ± Mo ± Au, skarn Cu ± Fe ± Zn, and
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Metallic Deposits CliffsNotes
Metallic Deposits. Magmatic deposits result when the minerals settle to the bottom of the intrusive body and form thin, high‐grade layers. Hydrothermal deposits rich in copper, lead, zinc, gold, silver, molybdenum, tin, mercury, and cobalt form from hot solutions that .
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Economic geology Magmatic ore deposits 2 SlideShare
Jan 10, 2017· Economic geology Magmatic ore deposits 2. Original sulphide minerals in these deposits are pyrite, chalcopyrite, bornite and molybdenite. Gold is often in native found as tiny blobs along borders of sulphide crystals. Most of the sulphides occur in veins .
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The Hajigak iron deposit
The Hajigak iron deposit is hosted by the Upper Proterozoic Awband Formation that, together with the underlying Kab Formation, constitutes the Qala Series, a sequence of metavolcanic and metasedimentary rocks up to 4500 m thick (Figure 4).
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Metal Deposits – Physical Geology
Magmatic Nickel Deposits. 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 (Manitoba) (Figure ), and Voisey's Bay (Labrador).
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IOCG Deposits: A Cordilleran Perspective
source is a nonmagmatic brine, metals can be principally or solely sourced from rocks along the flow path of this fluid (as they are in some other types of oreforming system), and trapping of metals to make Cu(Au)rich deposits will be selective and a function of the available of sulfur from an additional source.
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What is Iron Ore? (with pictures)
Sep 19, 2019· Banded iron formations are found on all continents, but especially rich deposits are found in Australia, Brazil, and the United States. Ad Another prominent source of iron is found as magmatic magnetite iron ore deposits, formed during ancient volcanic eruptions that released large amounts of magnetite which later crystallized.
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Tectonic Settings of Magmatic Sulfide Deposits in China
Tectonic Settings of Magmatic Sulfide Deposits in China M.F. Zhou 1, X.Y. Song, Keays2, and Lesher2 1Department of Earth Sciences, University of Hong Kong, Hong Kong, China 2Mineral Exploration Research Centre, Department of Earth Sciences, Laurentian University, Sudbury, Ontario, Canada P3E 6B5 email: mfzhou
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Locations of Deposits Massachusetts Institute of Technology
Other deposits include hematitebreccia complex deposits, magmatichydrothermal uranium in ironoxide CuAu deposits and quartzpebble conglomerate deposits (World Nuclear, 2010). Thorium is mined in conjunction with uranium, so much that estimates of reserves for these elements are made based off of uranium content.
الحصول على السعرMagmatic origin of giant 'Kirunatype' apatiteironoxide ...
In addition, the temperature and oxygen isotope data derived for the refractory GMD quartz and magnetite samples fall in the magmatic range also and overlap with those presented in Nyström et al. 20 for the iconic El Laco apatiteironoxide deposit in Chile (~700° – 800°C).
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Economic geology Magmatic ore deposits_1
Jan 10, 2017· Economic geology Magmatic ore deposits_1. The oxidation of these magmas is low, due to organic carbon in the source sediments. The water of the melts is derived by dehydration of muscovite in the metasediments. Highly fractionated intrusions could have the following ores: tin, tungsten and tantalum ore deposits.
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Genetic Model of Ore Deposits ~ Mining Geology
May 18, 2015· Host: The most significant magmatic deposits are related to mafic (gabbro, norite) and ultramafic (peridotite, dunite) rocks originated from the crystallization of basaltic and ultramafic magma. Process : Magmatic intrusions result in partitioning of elements and contamination of the melt by assimilation of the host rock.
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Ore genesis Wikipedia
Gold deposits are formed via a very wide variety of geological processes. Deposits are classified as primary, alluvial or placer deposits, or residual or laterite deposits. Often a deposit will contain a mixture of all three types of ore. Plate tectonics is the underlying mechanism for generating gold deposits.
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Chapter 28 Eagle's Nest: A Magmatic NiSulfide Deposit in ...
It is a magmatic sulfide deposit hosted by mafic and ultramafic rocks interpreted to be a feeder conduit beneath an extensive complex of sills and related volcanic rocks, which range in composition from dunite through ferrogabbro to rhyolite.
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What is a Mineral Deposit by Definition
Magmatic segregations, strictly considered, are only of the former kind, where the ore has been deposited in contact with the parent rock. Some of such deposits have no defined edges, but the ore slowly shades into the rock. The basic rocks, such as gabbro, norite, diabase, and peridotite are the commoner country rocks for magmatic segregations.
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