mantlederived magmas and magmatic nicupge deposits

mantlederived magmas and magmatic nicupge deposits

The Samapleu mafic ultramafic intrusion and its Ni Cu PGE

The Yacouba layered complex intrudes the Archean Ga Kenema Man craton in the Samapleu Yorodougou area western Ivory Coast In Samapleu area the complex was recognized in drill holes at three locations Samapleu Main SM Samapleu Extension 1 E1 and Yorodougou Yo It comprises websterites peridotites and gabbro norites arranged symmetrically with mafic layers at the center

Petrogenesis and tectonic setting of Archean anorthosite bearing

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Magmatic Ni Cu PGE deposits in magma plumbing systems CORE

Abstract AbstractThe three most crucial factors for the formation of large and super large magmatic sulfide deposits are 1 a large volume of mantle derived mafic ultramafic magmas that participated in the formation of the deposits 2 fractional crystallization and crustal contamination particularly the input of sulfur from crustal rocks resulting in sulfide immiscibility and

Magmas ore deposits and geodynamic evolution at convergent margins

The present proposal is for a 2 year extension of the SNF project N 200020 149147 Magmas ore deposits and geodynamic evolution at convergent margins Funds are asked for a 2 year extension of the PhD salary of Ms Maria Teresa Bellver Baca fieldwork and attendance to conferences by the PhD student and the applicant as well as for

Minerals Free Full Text Metallogenesis of Porphyry Copper Deposit

The origin of the Dexing porphyry Cu deposit is hotly debated Zircon and apatite are important accessory minerals that record key information of mineralization processes SHRIMP zircon U Pb analyses of granodiorite porphyries yield ages of ± Ma ± Ma and ± Ma whereas zircons in the volcanic rocks of the Shuangqiaoshan Group have

CiteSeerX — Mantle derived magmas and magmatic Ni Cu PGE deposits

several aspects of the ore forming process remain poorly understood including the control of mantle melting processes on the pge contents of mafic ultramafic magmas the mechanisms by which sulfur is transferred from wall rocks to ores bulk assimilation incongruent melting and/or devolatilization the distances and processes by which dense …

Continental root control on the genesis of magmatic ore deposits Nature

Magmatic Ni Cu PGE and PGE deposits Large Ni Cu decreases as the magma ascends 21 mantle derived magmas may reach the upper crust in a sulphur undersaturated state

Magmatic deposits PowerPoint PPT Presentation PowerShow

Magmatic deposits sulfides Ni and Cr PGE SUDBURY MINING CAMP To date the Sudbury mining camp has produced in excess of 16 billion pounds of nickel 15 billion PowerPoint PPT presentation Number of Views 685 Avg rating / Slides 28 Provided by 79251 Category

ugr age geochemistry and petrogenesis of the ultramaﬁc

JOURNAL OF PETROLOGY VOLUME 42 NUMBER 2 PAGES 433 457 2024 Age Geochemistry and Petrogenesis of the Ultramafic Pipes in the Ivrea Zone NW Italy G GARUTI1∗ F BEA2 …

Magmatic Ni Cu and PGE Deposits Geology GeoScienceWorld

PGE deposits are mostly related to large intrusions comprising both an early MgO and SiO 2 rich magma and a later Al 2 O 3 rich tholeiitic magma although several other intrusive types contain PGE in lesser mostly uneconomic quantities Most Ni rich deposits occur in rocks ranging from the Late Archean to the Mesozoic

Magmas ore deposits and geodynamic evolution at convergent margins

The present proposal is for a 2 year extension of the SNF project N 200020 137663 Magmas ore deposits and geodynamic evolution at a convergent margin the case of Ecuador adakite like rocks are formed by magmatic evolution at variably deep crustal levels and under hydrous conditions favoring the stability of amphibole ± garnet but

Mantle derived magmas and magmatic Ni Cu PGE deposits

World class magmatic sulfide deposits generally originated from large volume and high flux mantle derived magmas Naldrett 2024 Arndt et al 2024 Arndt 2024 Intracontinental

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Mantle Derived Magmas and Magmatic Ni Cu PGE Deposits

Magmatic Fe N i Cu ± platinum group element PGE sulfide deposits form when mantle derived mafic and ultramafic magmas become saturated in sulfide and segregate immiscible sulfide liquid commonly fol lowing interaction with crustal rocks Although the metal contents of primary magmas influence ore composi

Processes and Ore Deposits of Ultramafic Mafic Magmas through Space and

Processes and Ore Deposits of Ultramafic Mafic Magmas through Space and Time focuses on the fundamental processes that control the formation of ore deposits from ultramafic mafic magmas covering chromite platinum group element PGE Ni sulfides and Ti V bearing magnetite The exploration exploitation and use of these magmatic ores are important aspects of geology and directly linked to the

mantlederived magmas and magmatic nicupge deposits

Mantle derived magmas and magmatic Ni Cu PGE deposits Arndt1 Lesher2 and Czamanske3 1 LGCA University Joseph Fourier 1381 rue de la Piscine 38401 Grenoble France [email protected] 2 Mineral Exploration Research Centre Department of Earth Sciences Laurentian University

Mantle derived magmas and magmatic Ni Cu PGE deposits

Magmatic Fe Ni Cu ± platinum group element PGE sulfide deposits form when mantle derived mafic and ultramafic magmas become saturated in sulfide and segregate immiscible sulfide liquid commonly following interaction with crustal rocks

Magmatic Ni Cu PGE deposits in magma plumbing systems Features

Abstract The three most crucial factors for the formation of large and super large magmatic sulfide deposits are 1 a large volume of mantle derived mafic ultramafic magmas that participated in the formation of the deposits 2 fractional crystallization and crustal contamination particularly the input of sulfur from crustal rocks resulting in sulfide immiscibility and segregation and 3

The Role of Magmatic Volatiles in Arc Magmas Paul Wallace VDOCUMENT

To get the high H2O contents of arc magmas H2O must be added to the mantle either by aqueous fluid or hydrous meltEffect of H2O on Isobaric Partial Melting of Peridotite A model for hydrous flux melting of the mantle wedge Fluids and/or hydrous melts percolate upward through the inverted thermal gradient inthe mantle wedge

Genesis of komatiite associated nickel sulfide deposits at Kambalda

Magmatic Fe Ni Cu ± platinum group element PGE sulfide deposits form when mantle derived mafic and ultramafic magmas become saturated in sulfide and segregate immiscible sulfide liquid commonly following interaction with crustal rocks Although the metal contents of primary magmas influence ore c Abstract

Miocene adakitic magmatism and conditions of porphyry metallogenesis in

The barren porphyritic intrusions in the western Gangdese magmatic arc have higher 87 Sr/ 86 Sr i and lower Ɛ Nd t and zircon Ɛ Hf t values than contemporaneous fertile intrusions in the east Fig 10 a b implying that the magmas forming the barren intrusions were derived from ancient crust without mantle derived material The barren

PDF Discrimination between Magmatic and Hydrothermal Ni Cu PGE and PGE

Mafic ultramafic hosted Ni Cu PGE and PGE deposits are believed to have formed by segregation of immiscible sulfide melts and/or alloys from mafic ultramafic magmas in dynamic magmatic systems such as lava channels feeder dikes and magma chambers However some of the mineralization in some deposits hydrothermal

Dr Steve B Shirey Carnegie Science

The study of continents using the deepest derived rocks xenoliths in kimberlite led to Steve s recent interest in diamonds Diamonds and their inclusions are rare specimens that usually come from the mantle keels of continents at depths greater than 150km But a small fraction known as superdeep diamonds derive from greater depths including the mantle transition zone and the top of the

Re Os isotope systematics and iron oxide compositions of the mafic

This PhD study comprises four research articles and is divided thematically into two parts The first part focuses on the Re Os isotope systematics of magmatic Ni Cu PGE deposits and their host rocks mostly from eastern and northern Finland and the second part on the trace element compositions of oxide phases in these deposits

Tethys tectonic evolution and its bearing on the distribution of

The Yidun arc also hosts some important Cretaceous hydrothermal deposits such as the Lianlong Sn Ag deposit the Xiasai Ag deposit the Xiuwacu W Mo deposit the Tongchanggou porphyry Mo deposit and the Hongshan porphyry Mo Cu molybdenite Re Os age of the Tongchanggou deposit is88 82Ma et al 2024 and that of the

Magmatic Ni Cu PGE deposits in magma plumbing systems Features

Open Access The three most crucial factors for the formation of large and super large magmatic sulfide deposits are 1 a large volume of mantle derived mafic ultramafic magmas that participated in the formation of the deposits 2 fractional crystallization and crustal contamination particularly the input of sulfur from crustal rocks resulting in sulfide immiscibility and segregation

MAGMATIC DEPOSITS Earth Sci

The most important magmatic deposits are restricted to mafia and ultramafic rocks which represent the crystallization products of basaltic or ultramafic liquids These deposit types include Deposits Chromite deposits are the end product of the separation of solid phases Cr rich spinets Fe Mg Al Cr

Tectonic controls on Ni and Cu contents of primary mantle derived

Mantle derived magmas and magmatic Ni Cu PGE deposits N Arndt C Lesher 4 authors J Richards Geology 2024 Magmatic Fe Ni Cu ± platinum group element PGE sulfide deposits form when mantle derived mafic and ultramafic magmas become saturated in sulfide and segregate immiscible sulfide liquid commonly… Expand 181 PDF Alert

A rapid change in magma plumbing taps porphyry copper deposit forming

The transition to new and green technologies is increasing the need for metals 1 2 such as copper for which demand is forecast to increase by 140 350% from 2024 to 2024 3 4 Porphyry type

Minerals Free Full Text Petrogenesis and Metallogenesis of

Magmatic zircon tends to present characteristic trends in trace element compositions in response to magma petrogenesis and metallogenesis such that zircon may provide a window into melt evolution not accessible by whole rock chemistry The Yangla large Cu deposit is located in the central part of the Jinshajiang Suture Zone southwest China constrained between the Jinshajiang and Yangla Faults

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