mantlederived magmas and magmatic nicupge deposits

The mineral system approach applied to magmatic Ni–Cu–PGE

Magmatic Ni–Cu–PGE sulphide deposits are formed by the segregation and accumulation of immiscible sulphide liquid from mafic or ultramafic magmas The mineral system approach considers the origin of these deposits in the framework of lithospheric scale processes from the time honoured perspective of source fluids transport and traps

Discrimination between Magmatic and Hydrothermal Ni

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 e g hydrothermal

PDF A NEW GENETIC MODEL FOR THE GIANT Ni Cu PGE

The Kharaelakh intrusion is one of several sill like multiphase gabbroic intrusions that host world class Ni Cu PGE deposits in the Noril sk Talnakh region The sulfide ores of the Kharaelakh intrusion are characterized by elevated δ34S values 10–12‰ and high PGE concentrations e g up to10 ppm Pt The δ34S values require addition of crustal S with elevated isotope ratios such as

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 Although the metal contents of primary magmas influence ore compositions they do not control ore genesis because the metals partition strongly into the

World class Ni Cu PGE deposits key factors in their genesis

World class Ni Cu PGE deposits key factors in their genesis Received 9 January 1998 Accepted 21 September 1998 Abstract Magmatic Ni Cu sulfide deposits form as the result of segregation and concentration of droplets of liquid sulfide from mafic or ultramafic magma and the partitioning of chalcophile elements into these from the

Sulfide Saturation in Mafic Magmas Is External Sulfur

Magmatic Ni Cu PGE Ore Genesis EDWARD M RIPLEY† AND CHUSI LI Department of Geological Sciences Indiana University Bloomington Indiana 47405 Abstract The importance of externally derived sulfur in the genesis of sulfide rich magmatic Ni Cu platinum group element PGE deposits remains a key yet unresolved issue

Mantle derived helium in two Peruvian hydrothermal ore

Strong differences exist between the helium isotopic compositions of mantle derived magmas1–8 axial vent hotspring fluids9–14 subduction related magmas15–20 and many associated hot

Occurrence model for magmatic sulfide rich nickel copper

Magmatic Ni Cu±PGE sulfide deposits are spatially and genetically related to bodies of mafic and or ultramafic rocks The sulfide deposits form when the mantle derived mafic and or ultramafic magmas become sulfide saturated and segregate immiscible sulfide liquid commonly following interaction with continental crustal rocks

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

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

Ore Deposits Magmatic Flashcards Quizlet

mantle derived magmas react with and commonly partially melt crustal rocks Creates disequilibrium in magma chambers and leads to crystallization of new minerals Could lead to saturation in sulfur which is critical for forming many kinds of ore deposit

ore deposits produced by magmatic segregation with special

World class Ni Cu PGE deposits key factors in their genesis Abstract Magmatic Ni Cu sulfide deposits form as the result of segregation and concentration of droplets of liquid sulfide from mafic or ultramafic magma and the partitioning of chalcophile elements into these from the silicate melt

Continental root control on the genesis of magmatic ore

 · Some giant ore deposits are formed from magma but the precise controls on their formation are unclear A Perspective article analyses the distribution of

Secular Variation of Magmatic Sulfide Deposits and Their

Semantic Scholar extracted view of Occurrence model for magmatic sulfide rich nickel copper platinum group element deposits related to mafic and ultramafic dike sill complexes Chapter I in Mineral deposit models for resource assessment by Klaus J Schulz et al

Mantle Derived Magmas and Magmatic Ni Cu PGE Deposits

Magmatic ore deposits form through processes that are for the most part normal aspects of the crystallization of mafic to ultramafic magmas Such magmas form through melting in hotter than normal parts of the mantle and they rise toward the crust because their density is on average less than that of the enclosing mantle rocks

Magmatic Sulfide Rich Nickel Copper Deposits Related to

Magmatic Sulfide Rich Nickel Copper Deposits Related to Picrite and or Tholeiitic Basalt Dike Sill Complexes A Preliminary Deposit Model By Klaus J Schulz Val W Chandler Suzanne W Nicholson Nadine Piatak Robert R Seal II Laurel G Woodruff and Michael L Zientek Open File Report 2010–1179 U S Department of the Interior

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

Mantle derived magmas and magmatic Ni Cu PGE deposits

CiteSeerX Document Details Isaac Councill Lee Giles Pradeep Teregowda 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 compositions they

100th Anniversary Volume Print

Student Research Grants Graduate Student Fellowship Program Student Field Trip Program Michael J Fitzgerald Student Mapping Course

Mantle derived magmas and magmatic Ni Cu PGE deposits

Mantle derived magmas and magmatic Ni Cu PGE deposits N T Arndt1 C M Lesher2 and G K Czamanske3 1 – LGCA University Joseph Fourier 1381 rue de la Piscine 38401 Grenoble France arndt ujf grenoble fr 2 Mineral Exploration Research Centre Department of

Tectonic controls on Ni and Cu contents of primary mantle

Tectonic controls on Ni and Cu contents of primary mantle derived magmas for the formation of magmatic sulfide deposits Zhuosen Yao1 2 4 KeZhang Qin1 2 3 † and James e mungall4 1Key Laboratory of Mineral Resources Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China 2University of Chinese Academy of Sciences Beijing 100049 China

Tectonic controls on Ni and Cu contents of primary mantle

A closer look at shocked meteorites Discovery of new high pressure minerals In situ dating of metamorphism in Adirondack anorthosite A new style of rare metal granite with Nb r

Temporal and spatial controls on the formation of magmatic

Magmatic PGE and Ni–Cu deposits form in contrasting geologic environments and periods PGE deposits predominantly occur in large layered intrusions emplaced during the late Archean and early Proterozoic into stabilized relatively S poor cratonic lithosphere that provides enhanced preservation potential The magmas ascend through intracratonic sutures where extension and rifting is limited

Exploration for magmatic Ni Cu PGE sulphide deposits a

Exploration for magmatic Ni Cu PGE sulphide deposits a review of recent advances in the use of geochemical tools and their application to some South African ores W D Maier Department of Geology University of Pretoria Pretoria 0002 Republic of South Africa S J Barnes CERM Universite du Quebec Chicoutimi G7H 2B 1 Canada S A de Waal

A synthesis of magmatic Ni Cu PGE sulfide deposits in

Magmatic Ni Cu PGE sulfide deposits in the ca 260 Ma Emeishan large igneous province LIP are all hosted in relatively small mafic ultramafic intrusions with surface areas usually less than 1 km 2 These deposits are mainly distributed in the Danba Panzhihua Xichang Panxi Huili Yuanmou Midu Funing and Jinping regions in SW China and the Ta Khoa region in northern Vietnam

Noble Metals Subcontinental Lithosphere and Ni Cu PGE

 · Noble Metals Subcontinental Lithosphere and Ni Cu PGE Deposits Posted on May 28 2013 by stevepiercey Recent research by Kamenetsky et al published in Geology provides insight into the nature of the parental magmas potentially responsible for the formation of nickel copper platinum group element Ni Cu PGE deposits in intra plate environments

Michael Lesher Wikipedia

Carl Michael Lesher born 1951 is an American geologist He is an authority on the geology and origin of nickel copper platinum group element deposits especially those associated with komatiites their physical volcanology and localization the geochemistry and petrology of associated rocks and controls on their composition

PDF Magmatic Ni Cu PGE deposits in magma plumbing

Magmatic Ni Cu PGE deposits in magma plumbing systems Features formation and exploration Article PDF Available in Geoscience Frontiers 2 3 375 384 · July 2011 with 421 Reads

Mantle derived magmas and magmatic Ni Cu PGE deposits

Mantle derived magmas and magmatic Ni Cu PGE deposits By Nicholas Arndt C M Lesher and G K Czamanske Abstract 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

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