magmatic iron deposit

MAGMATIC ARC AND ASSOCIATED GOLD, COPPER, SILVER,

Gois magmatic arc mineral deposits have suggested porphyry (Chapada deposit) and volcanogenic hydrothermal exhalative (Chapada, Posse, Zacarias and Bom Jardim deposits) systems at the time of the main met als deposition. Based mainly on S isotope composition of pyrite and chalcopyrite, Richardson et al. (1986) Get price

Kiruna

Kiruna-type Deposits: Their Origin and Relationship to Intermediate Subv olcanic Plutons in the Great Bear Magmatic Zone, Northwest Canada Northwest Territories,Iron,Major-element analyses,Trace-element analyses,Metamorphism,Magmas,Rare earths,deposits,deposits,alteration suites,alt eration suites,contact,differentiation,geochemistry,iron Get price

Islamic Azad University Geological setting of iron oxide

relation between the iron-oxide apatite deposits, magmatic anomalies, and hydrothermal overprints. Based on this opinion, magmatic differentiation is the most reliable source of iron in this district. Hydrothermal alteration patterns and associated mineral assemblages are concluded with overviews on Get price

1. Introduction

The geodynamic processes controlling the formation of a deposit will also affect the depth of emplacement. Thus, sedimentary deposits such as Placers systematically form at the surface while hydrothermal and magmatic deposits can be emplaced at different levels within the crust (Figure 6). Most of these deposits occur within 5 km of depth Get price

Kiruna

Kiruna-type Deposits: Their Origin and Relationship to Intermediate Subv olcanic Plutons in the Great Bear Magmatic Zone, Northwest Canada Northwest Territories,Iron,Major-element analyses,Trace-element analyses,Metamorphism,Magmas,Rare earths,deposits,deposits,alteration suites,alt eration suites,contact,differentiation,geochemistry,iron Get price

Ore deposits produced by magmatic segregation, with

Type deposits of iron, chromium, aluminum, and diamond that have been formed by magmatic segregation are discussed, and conditions favorable for the formation of deposits of gold, silver, lead, zinc, tin, and other rare metals as a result of extreme differentiation are given. In conclusion the problem of differentiation of rock magmas Get price

Iron and Manganese Ore Deposits: Mineralogy

Iron ore deposits are known to occur in sedimentary, hydrothermal, and magmatic environments, but production today is almost entirely from three types of deposit: deposits related to Precambrian banded iron formations provide about 90% of all iron ore mined, and the remainder is derived from metasomatic skarn and magmatic magnetite deposits. Get price

A Review of the Behaviour of Platinum Group Elements

The largest and most significant type of geological deposit of platinum group elements (PGEs) is that associated with magmatic base metal sulfide minerals in layered mafic or ultramafic igneous intrusions. The common association of PGEs with sulfide minerals is a result of processes of magmatic and sulfide liquid segregation and fractionation. Get price

Special Issue Magmatic

The deposit is forming around a hot spring, which is part of a large active metallogenetic hydrothermal system depositing ore-bearing travertines. The native iron occurs in two shapes: nodules with diameter 0.4 and 0.45 cm, and angular grains with length up to tens of μm. Get price

Formation of massive iron deposits linked to explosive

The genetic link between magmas and ore deposit formation is well documented by studies of fossil hydrothermal systems associated with magmatic intrusions at depth. However, the role of explosive volcanic processes as active agents of mineralization remains unexplored owing to the fact that metals and volatiles are released into the atmosphere during the eruption of arc volcanoes. Get price

A deposit model for magmatic iron

Abstract. 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 attributes. Although these Proterozoic rocks are found worldwide, the majority of known deposits are found within exposed rocks of the Grenville Get price

Magmatic iron enrichment in high‐iron metatholeiites

(1998). Magmatic iron enrichment in high‐iron metatholeiites associated with 'Broken Hill‐type' Pb‐Zn‐Ag deposits, Mt Isa Eastern Succession. Australian Journal of Earth Sciences: Vol. 45, Geological framework and mineralisation in the Mt Isa Eastern Succession, northwest Queensland, pp. 389-396. Get price

New Insights for the Formation of Kiruna

The world-renowned Pliocene El Laco iron deposit in northern Chile is the youngest and the best-preserved Kiruna-type deposit in the world. The genesis of the El Laco Kiruna-type iron deposit—i.e., whether it is magmatic or hydrothermal in origin—is a long-standing controversy. The interstitial Fe-P phase lined by early Get price

Magmatic History of the Kerr

and related magmatic-hydrothermal deposits to Canada is profound, and the total of past production, reserves and re- Mitchell and Iron Cap Cu-Au porphyry deposits, cov-ering the morphology, the principal hydrothermal alter-ation assemblages, the degree of deformation, and the Get price

Occurrence model for magmatic sulfide

Magmatic sulfide deposits containing nickel (Ni) and copper (Cu), with or without () platinum-group elements (PGE), account for approximately 60 percent of the world's nickel production. Most of the remainder of the Ni production is derived from lateritic deposits, which form by weathering of ultramafic rocks in humid tropical conditions. Get price

Magmatic Segregation

Some of the commonly formed mineral deposits formed due to magmatic segregation are iron, granite, aluminum, diamond, chromite, and platinum. The different temperatures and basicity zones that prevail in magma cause the concentration of the ore, thereby resulting in the segregation of various minerals. Get price

Crustal thickening and endogenic oxidation of magmatic

Porphyry ore deposits, Earth's most important resources of copper, molybdenum, and rhenium, are strongly associated with felsic magmas showing signs of high-pressure differentiation and are usually found in places with thickened crust (45 kilometers). This pattern is well-known, but unexplained, and remains an outstanding problem in our understanding of porphyry ore deposit formation. Get price

Mineral Deposits • GeoLearning • Department of Earth Sciences

Mineral deposits (metallic, non-metallic and combustible materials) constitute major raw materials for industrial development today, and the demand for these raw materials is ever increasing. Mineral deposits include several different types related to magmatic, hydrothermal, sedimentary and metamorphic processes. Classification of deposits Get price

Two

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. Average concentrations of V ( 1000 ppm) and Cr (similar to 4 ppm) of the massive subtype Get price

The Shaytor Apatite

Shaytor apatite-rich iron deposit was derived from Fe-P-rich melt through liquid immiscibility and the activity of hydrothermal fluids. Keywords Magnetite-Apatite, Shaytor Iron Deposit, Kashmar-Kerman Tectonic Zone 1. Introduction Magnetite deposits that are related with magmatic rocks in volcano-plutonic belt occur worldwide range in age Get price

Thomson Resources

Magmatic Nickel Deposit Model Nickel deposits fall into three main types – Archaean komatiite hosted deposits, laterite nickel deposits and magmatic nickel sulphide deposits. A fourth type (hydrothermal) is emerging in importance Australia's eastern states with discoveries in Tasmania and Queensland. Get price

Mineralogical Society of America

Sulfur isotopes in magmatic-hydrothermal systems, melts, and magmas by Luigi Marini, Roberto Moretti, and Marina Accornero, p. 423 - 492. Chapter 15. Interactions between metal and slag melts: steel desulfurization by Jean Lehmann and Michele Nadif, p. 493 - 521. Chapter 16. The role of magmatic sulfur in the formation of ore deposits Get price