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Chromite Is Formed By Which Magmatic Process

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  • Secular Changes In Lavamagma Channelization And The

    Secular Changes In Lavamagma Channelization And The

    If magmatic fenicupge deposits can form by partial melting of fe sulfiderich sediments underneath lavamagma channels and dynamic upgrading of sulfide xenomelts by reaction with the magma the prevailing model then magmatic chromite deposits can form by partial melting of fe oxiderich sediments underneath lavamagma channels and dynamic upgrading of oxide xenocrysts by reaction

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  • Reading Ore Genesis  Geology  Lumen Learning

    Reading Ore Genesis Geology Lumen Learning

    Chromite and magnetite are ore minerals that form in this way liquid immiscibility sulfide ores containing copper nickel or platinum may form from this process as a magma changes parts of it may separate from the main body of magma two liquids that will not mix are called immiscible oil

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  • 21 Igneous Magmatic Rocks  Geosciences Libretexts

    21 Igneous Magmatic Rocks Geosciences Libretexts

    Aug 11 2020 stages of the igneous or magmatic cycle the stages of the igneous or magmatic cycle are as follows 1 early magmatic phase early crystallization from the fiery hot magma chromite magnetite titanium magnetite 2 liquid magmatic phase main crystallization 1500600 degrees c spinel zircon apatite peridot diamond 3

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  • The Processes Of Formation Of Mineral Deposits Are Grouped

    The Processes Of Formation Of Mineral Deposits Are Grouped

    This type of magmatic concentration is often due to the gravitative crystallization of early formed heavy minerals eg bushveld chromite deposits south africa chromite deposits of keonjhar orissa

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  • Magmatic Deposits  Economic Geology

    Magmatic Deposits Economic Geology

    May 17 2016 chromite deposits formed as the end products of the separation of solid phases from a liquid and their accumulation in chromite rich layers formation of chromite rich layers takes place by fractional crystallization and gravitational settings formed as cumulate layers at the base two types of chromite deposits stratiform chromite deposits podiform chromite deposits

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  • Chromite An Overview  Sciencedirect Topics

    Chromite An Overview Sciencedirect Topics

    Jul 31 2020 chromite forms in deep ultramafic magmas and is one of the first minerals to crystallize from cooling magma because of their density chromite crystals fall to the bottom of the magma body and concentrate there chromite is also found in metamorphic rocks such as serpentites

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  • Chromite An Overview  Sciencedirect Topics

    Chromite An Overview Sciencedirect Topics

    Chromite cr occurs exclusively in mafic and ultramafic igneous rocks papp and lipin 2006although some crbased minerals such as crocoite pbcro 4 vauquelinite pb 2 cucro 4po 4 uvarovite ca 3 cr 2 sio 4 3 and merumite 4cral 2 o 3 3h 2 o are well known chromite fecr 2 o 4 is the only one that is a commercially recoverable source of cr sueker 2006 glastonbury et

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  • Chromite Geo143 Mineral Webpages

    Chromite Geo143 Mineral Webpages

    It can be commonly found in meteorites too 4 chromite forms when magma is slowly cooling inside the earths crust but because of the density of the mineral it falls to the bottom of the magma

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  • Chromitein Komatiites 1magmaticcontrols On

    Chromitein Komatiites 1magmaticcontrols On

    In the case of a cumulate formed from a liquid which was close to chromite saturation the rock could start with no cumulus chromite but chromite could begin to crystallize from liquid trapped in the pore space once this liquid has cooled far enough to intersect the chromite saturation curve a rock formed in this way would have a composition plotting along the olivineliquid mixing line

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  • 21igneousmagmatic Rocks  Geosciences Libretexts

    21igneousmagmatic Rocks Geosciences Libretexts

    Aug 11 2020 stages of the igneous or magmatic cycle the stages of the igneous or magmatic cycle are as follows 1 early magmatic phase early crystallization from the fiery hot magma chromite magnetite titanium magnetite 2 liquid magmatic phase main crystallization 1500600 degrees c spinel zircon apatite peridot diamond 3

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  • Reading Ore Genesis Geology  Lumen Learning

    Reading Ore Genesis Geology Lumen Learning

    Magmatic processes these crystals may settle onto the bottom of the intrusion concentrating ore minerals there chromite and magnetite are ore minerals that form in this way liquid immiscibility sulfide ores containing copper nickel or platinum may form from this process as a magma changes parts of it may separate from the main body

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  • Ore Deposits Related Tomagmaticactivity

    Ore Deposits Related Tomagmaticactivity

    Definite associations exist between specific magmatic ores and certain kinds of rocks 1 platinum occurs only with mafic to ultramafic rocks such as varieties of norite peridotite or their alteration products 2 chromite with rare exceptions is formed only in

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  • Processes Of Ore Formation  Geolamuorg

    Processes Of Ore Formation Geolamuorg

    Number 1 is the most important and results from the settling of early formed crystals to the bottom of the magma chamber rocks formed in this manner are termed cumulates and are often characterized by rhythmic layering in ore deposits the alternating layers are often magnetite andor chromite between layers of silicate ex bushveld igneous complex

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  • Geological Features And Origin Ofthechromitedeposits Of

    Geological Features And Origin Ofthechromitedeposits Of

    The different varieties of chromite ore present in the area are massive banded and spotted laminated and friable the grain size of chromite varies between 025 and 4 mm and the fineness of the grain increases from the bottom to the top layers the cell dimension of chromite 823832 decreases with the increase of al 2 o 3

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  • Deposition Mechanisms Of Magmatic Sulphide Liquids

    Deposition Mechanisms Of Magmatic Sulphide Liquids

    These small droplets are interpreted to have formed by segregation of immiscible sulphide liquid upon cooling of a komatiitic magma flowing in a magma conduit or channel these newly formed droplets were trapped in situ by the crystallizing framework of olivine andor chromite

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  • 28 Questions With Answers Inmagmatic Processes Science

    28 Questions With Answers Inmagmatic Processes Science

    Dec 30 2020 often granodioritic early granitoids result from this process or they form a small rim around the granitic body which will subsequently take on a monzo to syenogranitic composition

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  • Pdf Metasomatic Alteration Ofchromitefrom Parts Of The

    Pdf Metasomatic Alteration Ofchromitefrom Parts Of The

    Frozen in magmatic mineralogy of the chromitite and the enclosing anorthosite suggest successive crystallization of chromiteclinopyroxene and chromiteclinopyroxeneanorthite from a hydrous

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  • Multistage Development From Ultrahighpressure

    Multistage Development From Ultrahighpressure

    The characteristic features of the disseminated and bandedtype chromites such as their interstitial distribution euhedral to subhedral morphology and absence of exsolution lamellae suggest they formed under lowpressure magmatic conditions

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  • Chromite The Only Mineral Ore Of Chromium Metal

    Chromite The Only Mineral Ore Of Chromium Metal

    During this slow cooling chromite and associated minerals crystallized early while the magma was still at a very high temperature their crystals then settled to the bottom of the magma chamber to form a layered deposit some of the layers in these deposits

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  • Chromite  Eshal Industries

    Chromite Eshal Industries

    Chromite is found as orthocumulate lenses of chromitite in peridotite from the earths mantle it also occurs in layered ultramafic intrusive rocks in addition it is found in metamorphic rocks such as some serpentinites an ore deposit of chromite form as early magmatic differentiates

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  • Chromite Greyrock Llc

    Chromite Greyrock Llc

    Chromite chromite is a mineral that is an iron chromium oxide it has a chemical formula of fecr2o4 it is an oxide mineral belonging to the spinel group the element magnesium can substitute for iron in variable amounts as it forms a solid solution with magnesiochromite mgcr2o4 chrome ore is one of the most usefull mineral due to its usage in production of metallic chromium used as an alloying

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  • Pdfchromiteand Pge Geochemistry Of The Elekda

    Pdfchromiteand Pge Geochemistry Of The Elekda

    Keywords the chromitites the elekda ophiolite can be divided in to highcr and highal types the calculated melt chromite composition of the highcr chromitites is 94132 wt al2o3 0204 wt tio2 with feomgo ratios of 04 deep magma processes 19 which are indicative of

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  • Chromiteinkomatiites 3d Morphologies With Implications

    Chromiteinkomatiites 3d Morphologies With Implications

    These dendritic grains are likely to have formed by rapid crescumulate growth from magma that was close to its liquidus temperature but supersaturated with chromite in some cases this process seems to have been favoured by nucleation of chromite on the margins of sulphide liquid blebs

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  • Precious Metal Enrichment In The Platreef Bushveld

    Precious Metal Enrichment In The Platreef Bushveld

    Sep 10 2010 magmatic sulfide deposits are the most significant source of platinumgroup elements pge in the world key to understanding their genesis is determining the processes and timing of sulfide saturation metal enrichment and crustal contamination in this study we have identified droplets of magmatic sulfide from the platreef south africa where droplets of sulfide have been trapped in the

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  • Ore Forming Process Slideshare

    Ore Forming Process Slideshare

    Sep 17 2017 early magmatic process the early magmatic deposits are believed to have been formed simultaneously with the hostrock or where the ore deposits formed in the early stage of magmatic periods 9 late magmatic process the late magmatic deposits are formed towards the close of the magmatic deposits for example titaniferous magnetite 10

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