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The behaviour of trace and rare earth elements (REE) during hydrothermal alteration in the Rangan ar - دانلود رایگان



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دانلود رایگان The behaviour of trace and rare earth elements (REE) during hydrothermal alteration in the Rangan ar


The


behaviour


of


trace


and


rare


earth


elements


(REE)


during


hydrothermal


alteration


in


the


Rangan


ar


مقاله


پاورپوینت


فایل فلش


کارآموزی


گزارش تخصصی


اقدام پژوهی


درس پژوهی


جزوه


خلاصه


1. Introduction

OJG Open Journal of Geology 2161-7570 Scientific Research Publishing 10.4236/ojg.2019.95019 OJG-92404 Articles Earth&Environmental Sciences Geochemical Behavior of Trace- and Rare-Earth Elements in the Hydrothermal Alteration Facies of the Cijulang Area, West Java, Indonesia Myo Min Tun 1 I Wayan Warmada 2 Arifudin Idrus 2 Agung Harijoko 2 Kotaro Yonezu 3 Koichiro Watanabe 3 …

The behaviour of trace and rare earth elements (REE ...

01/02/2009 · Geochemically speaking, trace and rare earth elements behave highly selective in different facies. The rhyolitic dome in the Rangan area has been subjected to hydrothermal alterations by two different systems, (1) A fossil magmatic-hydrothermal system with a powerful thermal engine of a deep monzodioritic magma, (2) An active hydrothermal system dominated by meteoric water.

Geochemistry of Hydrothermal Alteration in Volcanic Rocks

zones that formed during supergene processes ar e significantly enriched in REE relative to hypogene equivalents (Dill, 2000). Pandarinath et al. (2008) studied the effects of hydrothermal alteration on major, rare-earth, and other trace-element concentrations in rhyolitic rocks of the Los Azufres geothermal field, Mexico.

The behaviour of trace and rare earth elements (REE ...

Journal of Asian Earth Sciences. Volume 34, Issue 2, February 2009, Pages 123-134. The behaviour of trace and rare earth elements (REE) during hydrothermal alteration in the Rangan area (Central Iran) Author links open overlay panel A. Parsapoor M. Khalili M.A. Mackizadeh.

Rare-earth element - Wikipedia

A rare-earth element (REE) or rare-earth metal (REM), as defined by the International Union of Pure and Applied Chemistry, is one of a set of seventeen chemical elements in the periodic table, specifically the fifteen lanthanides, as well as scandium and yttrium. Scandium and yttrium are considered rare-earth elements because they tend to occur in the same ore deposits as the lanthanides and ...

The geochemical behavior of altered igneous rocks in the ...

Geochemical studies were carried out to identify the behaviors of major, trace and rare earth elements (REE) during alteration processes. Most major oxides such as SiO2, Al2O3, Fe2O3, Na2O, MgO, TiO2, MnO, and P 2O5 of basalt are relatively immobile in most altered zones. In …

Rare earth elements and yttrium in geothermal fluids

Therefore, the rare earth elements (REE) and yttrium (henceforth combined to REY) abundance in waters never represents equilibrium sensu stricto with any sampled piece of rock suspected to represent the source rock (Möller, 2002). The group of REY yield information on fractionation mechanisms during alteration of

Enrichment of Rare Earth Elements during

06/07/2013 · Concern about security of supply of critical elements used in new technologies, such as the Rare Earth Elements (REE), means that it is increasingly important to understand the processes by which they are enriched in crustal settings. High REE contents are found in syenite-dominated alkaline complexes intruded along the Moine Thrust Zone, a major collisional zone in north-west Scotland.

The behaviour of trace and rare earth elements (REE ...

01/02/2009 · 5.4. The behaviour of the REE and other trace elements during hydrothermal alteration 5.4.1. The isocon method. Direct comparison of element concentrations cannot be a reliable indication of element mobility in altered and unaltered rocks. Therefore, the isocon diagram can be applied for this purpose (Grant, 1986).

Light rare earth element redistribution during ...

Article Light rare earth element redistribution during hydrothermal alteration at the Okorusu carbonatite complex, Namibia Delia Cangelosi1* , Sam Broom-Fendley2, David Banks1, Daniel Morgan1 and Bruce Yardley1 1School of Earth and Environment, University of Leeds, Leeds LS2 9JT, UK; and 2Camborne School of Mines, University of Exeter, Penryn Campus, ...

m.scirp.org

This study examines the behavior of trace- and rare-earth elements (REE) in different hydrothermal alteration facies (silicic, advanced argillic and argillic) of Cijulang high-sulfidation epithermal gold deposit, West Java, Indonesia. The results of the study indicate that remarkable differences in the behavior of trace elements and REE are observed in the studied alteration facies.

Rare earth elements and yttrium in geothermal fluids

Therefore, the rare earth elements (REE) and yttrium (henceforth combined to REY) abundance in waters never represents equilibrium sensu stricto with any sampled piece of rock suspected to represent the source rock (Möller, 2002). The group of REY yield information on fractionation mechanisms during alteration of

Deducing the source and composition of rare earth ...

Carbonatites are characteristically enriched in the rare earth elements (REE) and are host to many of the largest REE deposits (Wall 2014; Verplanck et al. 2016).The processes behind the formation of these deposits are increasingly of interest due to the recognition of the REE as a ‘critical metal’ in terms of its supply security (e.g., Chakhmouradian and Wall 2012; European Commission ...

Rare earth elements and hydrothermal ore …

01/04/1992 · These authors showed that (a) the low water/rock ratio at the vent sites could not change the basalt REE pattern, RARE EARTH ELEMENTS AND HYDROTHERMAL ORE FORMATION PROCESSES 33 (b) the temperature-pressure dependence of silica solubility indicated a depth of hydro- thermal alteration greater than 1 km, and (c) the REE patterns of the basalts did not show any similarity to the REE

Rare-earth element - Wikipedia

A rare-earth element (REE) or rare-earth metal (REM), as defined by the International Union of Pure and Applied Chemistry, is one of a set of seventeen chemical elements in the periodic table, specifically the fifteen lanthanides, as well as scandium and yttrium. Scandium and yttrium are considered rare-earth elements because they tend to occur in the same ore deposits as the lanthanides and ...

Behavior of rare earth elements in an aquifer …

15/10/2019 · Rare earth elements (REE) and yttrium concentrations were also measured in these samples before and after CO 2 perturbation, to evaluate their behavior. An enrichment of total Y plus REE (REY) occurred.

The geochemical behavior of altered igneous rocks in the ...

Geochemical studies were carried out to identify the behaviors of major, trace and rare earth elements (REE) during alteration processes. Most major oxides such as SiO2, Al2O3, Fe2O3, Na2O, MgO, TiO2, MnO, and P 2O5 of basalt are relatively immobile in most altered zones. In …

The behavior of trace elements in seawater, …

23/09/2019 · Trace elements are actively cycled in seawater, are essential components for marine life, and are transported to the seafloor where they can become enriched in marine sediments. Trace element enrichment in marine sediments depends on local hydrography, redox conditions, and biological activity. Most redox-sensitive trace elements partake in biological cycling in seawater and sedimentary pore ...

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