Tectonic and magmatic controls on the metallogenesis of

Geochemical plots of igneous rock compositions and general fields for porphyry related belts in eastern Alaska a Total alkali vs silica plot for igneous rocks emplaced into Wrangellia terrane

The mineral system approach applied to magmatic Ni Cu PGE sulphide deposits

Most magmatic Ni Cu PGE sulphide deposits occur within long lived magma pathways fed by high degree partial melts of the mantle Holistic mineral system analysis for such deposits has some parallels with dominantly hydrothermal systems but also some important differences reworking and upgrading of sulphide magmas and 5 favourable

Copper Rich Magmatic Ni Cu PGE Deposits Request PDF

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

Tectonic controls on Ni and Cu contents of primary mantle derived

We have modeled the genesis of primary mantle derived magma to explore the controls exerted on its Ni Cu ore potential by water content pressure and mantle potential temperature Tp

Sulfide silicate textures in magmatic Ni Cu PGE sulfide ore deposits

A large proportion of ores in magmatic sulfide deposits consist of mixtures of cumulus silicate minerals sulfide liquid and silicate melt with characteristic textural relationships that provide essential clues to their origin Within silicate sulfide cumulates there is a range of sulfide abundance in magmatic textured silicate sulfide ores between ores with up to about five

Geology and geochemistry of the Tulaergen conduit style magmatic

The Tulaergen magmatic Ni Cu sulfide ore deposit is located along the southern margin of the Central Asian Orogenic Belt in northwestern China This deposit is hosted by a small mafic ultramafic complex composed of a Late Carboniferous 301 Ma gabbroic member at the margin and a younger ultramafic dyke in the center Net textured and semi massive

Crustal magmatic controls on the formation of porphyry copper deposits

Orange circles and the P ebble Copper and Bingham deposits in red symbols are the ten largest porphyry Cu deposits based on the contained Cu endowment The Cadia Grasberg Oyu T olgoi Kalmakyr

Melt inclusions in veins Linking magmas and porphyry Cu deposits

Fluid inclusions containing multiple solid phases are observed in many magmatic systems and porphyry copper deposits with Mo W deposits derived from magmas which formed by melting of

PDF Magmatic Ni Cu and PGE Deposits Geology

Thus this study represents a novel integrated approach to understanding magmatic processes and the ore deposits they host Potholes have a complex 3D structure and vary greatly in size and depth

Characteristics of Ni Cu PGE mineralization and

There is little difference in the Pt Pd /Os Ir Ru ratios and the chondrite normalized PGE distribution patterns between the PGE rich and PGE poor ores suggesting that they originated from magmas with similar major element close association of PGE enrichment with sulfide mineralization and the strong correlations

CHARACTERISTICS OF HIGH SULFIDATION EPITHERMAL

In Magmas Fluids and Ore Deposits Ed Thompson Mineralogical Association of Canada Short Course Vol 23 1995 Chapter 19 CHARACTERISTICS OF HIGH SULFIDATION EPITHERMAL

Ore Geology of Magmatic Ni Cu PGE deposits

1 Introduction 2 Theoretical considerations 3 Komatiite Related Deposits 4 Ore deposits associated with flood basalt volcanism 5 Deposits of the Pechenga area Russia 6 Voisey s Bay and other deposits Labrador Canada 7 The Jinchuan deposit China 8 Deposits of the Sudbury Camp Ontario Canada 9 Platinum group element PGE deposits 10

Magmatic immiscibility and the origin of magnetite apatite iron deposits

The origin of magnetite apatite iron deposits MtAp is one of the most contentious issues in ore geology with competing models that range from hydrothermal to magmatic processes Here we report

Magmatic Processes that Lead to Gold Only Deposits

Many gold deposits are now found within igneous rocks that were once magmas but this does not necessarily mean that magmatic processes played any role in the formation of these deposits hosted in igneous rocks but without magmatic processes having been involved with the gold are both numerous and important and they are

Lithospheric hydrous pyroxenites control localisation and Ni

Magmatic Ni sulfide ore deposits are generally associated with basaltic to komatiitic igneous rocks that originate by partial melting of the mantle which is usually modelled as a uniform four phase peridotite Existing models accept that the key metal contributors to mantle melts are olivine Ni and sulfide Cu platinum group elements PGEs and minor Ni

Magmatic Sulfide Deposits Geology Geochemistry and

1 Introduction 2 Theoretical considerations 3 Komatiite Related Deposits 4 Ore deposits associated with flood basalt volcanism 5 Deposits of the Pechenga area Russia 6 Voisey s Bay and other deposits Labrador Canada 7 The Jinchuan deposit China 8 Deposits of the Sudbury Camp Ontario Canada 9 Platinum group element PGE deposits 10

Nickel in olivine as an exploration indicator for magmatic Ni

Most known deposits have parent magmas that are in the upper range of FeO content for given MgO compared with baseline data sets for continental LIP magmas Some exceptionally thick magmatic

PDF Felsic magmatism and uranium deposits ResearchGate

The strongly incompatible behaviour of uranium in silicate magmas results in its concentration in the most felsic melts and a prevalence of granites and rhyolites as primary U sources for the

PDF Hydrothermal Fluids of Magmatic Origin ResearchGate

Diagram showing salinity temperature range for various hydrothermal fluids summarised after Beane 1983; Roedder 1984; Bodnar et al 1985; Lattanzi 1991; Wilkinson 2001 and our own observations

Magmatic Ni‐Cu and PGE Deposits Geology Geochemistry

They highlight the significance of environments that acted as pathways for komatiite magmas in the formation of Ni Cu PGE deposits where external sulfur was possible for the magmas to assimilate Layton Matthews et al focus on the mineralogy and geochemistry of the komatiite associated nickel deposits in the Thompson belt Manitoba Canada

Surficial geochemical and mineralogical signatures of Ni Cu PGE

Magmatic ore deposits are an important global source of Ni Cu Au and platinum group elements PGEs; Pt Pd Rh Ru Ir and Os; US Geological Survey 2014 and include the 1850 Ma Sudbury Igneous Complex SIC which is the world s largest historic Ni Cu mining SIC hosts 77 Ni Cu PGE deposits and comprises approximately 34% of the

Magmatic Ni Cu PGE deposits in magma plumbing

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