magmatic iron deposit

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Trace Element Composition of Igneous and Hydrothermal ,

Aug 01, 2019· Igneous or hydrothermal magnetite from Cu-Mo, Cu-Au, and Cu-Mo-Au deposits cannot be discriminated from each other, probably due to similar intermediate to felsic intrusion composition, melt/fluid composition, and conditions such as temperature and oxygen fugacity for the formation of these deposits The magmatic affinity of porphyritic ....

Mineral Ore Deposits: Meaning, Origin and Types | Geology

ADVERTISEMENTS: In this article we will discuss about:- 1 Introduction to Ore Deposits 2 Origin of Ore Deposits 3 Typ Introduction to Ore Deposits: Minerals form chief source of all the industrial metals and non-metals The commonly used metals like aluminum, copper, iron, lead, zinc etc are all manufactured using minerals as raw materials...

IOCG Deposits: A Cordilleran Perspective

numerous iron oxide(-Cu-Au) (IOCG) systems formed in parts of the Cordillera of North and South America They occur in diverse tectonic and magmatic settings with considerable variety in deposit associations and characteristics Although there are general patterns, there is no simple, all-encompassing descriptive model; a...

Two-tiered magmatic-hydrothermal and skarn origin of ,

The multi-element diagrams, for massive magnetite, show patterns closer to those of magmatic-hydrothermel iron deposits (Kiruna-type), whereas, patterns of the banded magnetite match better with those of skarn deposits, particularly the magnesian skarns...

The processes of formation of mineral deposits are grouped ,

The late magmatic deposits are the consolidated parts of the igneous fractions that remained after the crystallization of the early formed rock-silicat These deposits are formed by the following processes: (a) Residual liquid segregation: Basic magmas undergoing differentiation may sometimes become enriched in iron and titanium...

Nickel Deposits Explained | Balmoral Resources Ltd

Thus magmatic sulphide grains are typically multi-phase being comprised of separate chalcopyrite (copper-rich), pyrrhotite (iron-rich) and pentlandite (nickel-rich) phas A number of open pit nickel deposits are developed within these disseminated zones which tend to be more laterally extensive than the massive sulphide zon...

MAGMATIC SULFIDE DEPOSITS (MODELS 1, 2b, 5a, 5b, 6a, 6b ,

MAGMATIC SULFIDE DEPOSITS (MODELS 1, 2b, 5a, 5b, 6a, 6b, and 7a; Page, 1986a-g) by Michael P Foose, Michael L Zientek, and Douglas P Klein SUMMARY OF RELEVANT GEOLOGIC, GEOENVIRONMENTAL, AND GEOPHYSICAL INFORMATION Deposit geology Magmatic sulfide deposits are sulfide mineral concentrations in mafic and ultramafic rocks derived from immiscible...

The genesis of magmatic magnetite deposits - NASA/ADS

Physicochemical considerations are used in discussing the conditions for the formation of these deposits Given the inevitability of ferritization processes in silicate melts at the magmatic stage and the fact that these processes proceed in only one direction, it is contended that magmatic magnetite deposits of iron are more extensively developed than has been supposed...

Magmatic Deposits | Article about Magmatic Deposits by The ,

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, diamonds, niobium-tantalum, zirconium, and hafnium...

Mineral deposit - Immiscible melts | Britannica

Mineral deposit - Mineral deposit - Immiscible melts: A different kind of magmatic segregation involves liquid immiscibility A cooling magma will sometimes precipitate droplets of a second magma that has an entirely different composition Like oil and water, the two magmas will not mix (ie, they are immiscible) The chemical principle governing precipitation of an immiscible ,...

Nickel Deposits Explained | Balmoral Resources Ltd

Thus magmatic sulphide grains are typically multi-phase being comprised of separate chalcopyrite (copper-rich), pyrrhotite (iron-rich) and pentlandite (nickel-rich) phas A number of open pit nickel deposits are developed within these disseminated zones which tend to be more laterally extensive than the massive sulphide zon...

Magmatic iron ores and associated mineralisation: Examples ,

Late Early Proterozoic to Middle Proterozoic (18-10 Ga) iron oxide-rich deposits are a family (magmatic-exhalative) of ore deposits transitional between Archean to Early Proterozoic banded iron ....

Two-tiered magmatic-hydrothermal and skarn origin of ,

The multi-element diagrams, for massive magnetite, show patterns closer to those of magmatic-hydrothermel iron deposits (Kiruna-type), whereas, patterns of the banded magnetite match better with those of skarn deposits, particularly the magnesian skarns...

Geology Ch 13: Mineral and Rock Resources Flashcards ,

The discovery of additional mineral deposits , is a sedimentary rock, consisting of alternating iron-rich and silica rich (or carbonate-rich) layers, that may qualify as an ore of iron , Hydrothermal and magmatic ores are often associated with lithospheric plate boundari True...

Ore Facts for Kids

An ore is a mineral which has a metal inside it Ores are usually extracted by being minedThey can sometimes be found on the Earth's surface The metal in ore is often valuable There are different ways to get the metal out of the ore...

Magmatic Ore Deposits | SpringerLink

A magmatic ore deposit is an accumulation of magmatic minerals Some of these minerals are extremely rare and almost never encountered in common rocks, an example being alloys of the platinum metals; other minerals, such as magnetite, are ,...

Ore Facts for Kids

An ore is a mineral which has a metal inside it Ores are usually extracted by being minedThey can sometimes be found on the Earth's surface The metal in ore is often valuable There are different ways to get the metal out of the ore...

Economic geology - Magmatic ore deposits 2

Jan 10, 2017· Economic geology - Magmatic ore deposits 2 1 Prepared by: Dr Abdel Monem Soltan PhD Ain Shams University, Egypt 2 118 Porphyry copper (Mo-Au-Sn-W) deposits Porphyry ore deposits are products of magmatic-hydrothermal activity at shallow crustal levels...

25 Mafic-ultramafic orthomagmatic mineral systems ,

Iron-Ni-Cu±PGE sulfide deposits can occur within komatiitic volcanics found within Archean greenstone belts The ore deposits are usually located at the base of flows, controlled by structural traps such as faults and folds or found within associated dykes and sills...

Pilot Knob Mine (Pilot Knob Pellet Company Mine/plant ,

Pilot Knob Mine (Pilot Knob Pellet Company Mine/plant), Pilot Knob, Iron Co, Missouri, USA : A former occurrence/mine located 18 km (11 miles) ESE of Pilot Knob (city), just W of the surface outcrop, on federal Wildlife Refuge land (Pilot Knob National Wildlife refuge) Mined from 1968 to ....

Mineral deposit - Magmatic cumulates | Britannica

Mineral deposit - Mineral deposit - Magmatic cumulates: Magmatic segregation is a general term referring to any process by which one or more minerals become locally concentrated (segregated) during the cooling and crystallization of a magma Rocks formed as a result of magmatic segregation are called magmatic cumulat While a magma may start as a homogeneous liquid, magmatic segregation ....

25 Mafic-ultramafic orthomagmatic mineral systems ,

Iron-Ni-Cu±PGE sulfide deposits can occur within komatiitic volcanics found within Archean greenstone belts The ore deposits are usually located at the base of flows, controlled by structural traps such as faults and folds or found within associated dykes and sills...

Origin Of Ore Deposits | Processes of Ore Formation ,

Late magmatic deposits , Some of the important sedimentary deposits are Iron ore , Manganese ore, Copper ore, Phosphates, limestone, etc These deposits are formed by the process of sedimentation During weathering, the materials are released from the source rock In this process the valuable minerals constituents are taken into solution...

A Deposit Model for Magmatic Iron-Titanium-Oxide Deposits ,

A Deposit Model for Magmatic Iron-Titanium-Oxide Deposits Related to Proterozoic Massif Anorthosite Plutonic Suit By Laurel G Woodruff, Suzanne W Nicholson, and David L Fey...

Ore deposits related to magmatic activity

Ore Deposits Related to Magmatic Activity Certain accessory or uncommon constituents of magmas become enriched into bodies of sufficient size and richness to constitute valuable mineral deposits eg Chromite and platinum Magmatic ore deposits are characterized by their close relationship with intermediate or deep seated intrusive igneous rocks...

Mineral Resources | Earth Science Flashcards | Quizlet

Magmatic segregation can also take place as a result of the separation of sulphide and silicate liquids Sulphide and silicate liquids are immiscible meaning they do not mix, so droplets of iron, copper, nickel and platinum sulphides that form at high temperatures and are denser than the surrounding silicate liquid (magma) sink to the base of the intrusion to form a cumulate layer, ,...

SKARN DEPOSITS - Earth science

Iron Skarns The largest skarn deposits are the iron skarns Iron skarns are mined for their magnetite content and although minor amounts of Cu, Co, Ni, and Au may be present, iron is typically the only commodity recovered (Grigoryev et al, 1990)...

A deposit model for magmatic iron-titanium-oxide deposits ,

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 attribut Although these Proterozoic rocks are found worldwide, the majority of known deposits are found within exposed rocks of the ,...

Genetic Model of Ore Deposits ~ Mining Geology

May 18, 2015· Many deposits are very large (>500 million tons, >300 million tons contained Fe) and consist dominantly of magnetite with only minor silicate gangue Ex Um Nar area, central Eastern Desert, Egypt Fe Skarn, Iron Oxide Cu-Au, and Manto Cu-(Ag) Deposits in the Andes Cordillera of Southwest Mendoza Province, Argentina...

Locations of Deposits

Other deposits include hematite-breccia complex deposits, magmatic-hydrothermal uranium in iron-oxide Cu-Au deposits and quartz-pebble 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 ....