rare earth elements in apatite from basalt

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(PDF) Rare Earth Element Behaviour in Apatite from the ,

Aug 02, 2017· Based on compositional data for zoned apatite, we evaluate whether changes in the morphology and the rare earth element and Y (REY) chemistry of apatite ,...

The Rare Earth Content and Origin of Alkali-Rich Basalts ,

The rare earth content of alkali-rich, silica-undersaturated basalts erupted onto oceanic and continental plates is consistent with their derivation by slight amounts of partial melting of hydrous garnet peridotite at the top of the asthenosphere, within the low-velocity, low-Q zone of the mantle...

Optimization of Acid Leaching of Rare-Earth Elements from ,

Jun 30, 2016· Optimization of the acid leaching process for Mongolian apatite-based ore containing rare-earth elements (REEs) was studied The ore contained approximately 10% of REEs as total rare earth oxides, and the major impurities were Ca (33% as CaO) and Fe (23% as Fe2O3) Fe bearing minerals could be removed by passing the sample through a wet high-intensity magnetic separator ,...

(PDF) A study of rare earth element (REE)-SiO2 variations ,

A study of rare earth element (REE)-SiO2 variations in felsic liquids generated by basalt fractionation and amphibolite melting: A potential test for discriminating between the two different processes...

Metasomatism of the off-cratonic lithospheric mantle ,

2 天前· Rare Earth Element (REE) , These works note the presence of rare phlogopite, amphibole, apatite, alkali feldspar, and interstitial silicate glass (1%) , located close to the melt source must have LREE-MREE abundances much higher than those in the host basalt Near the percolation front, elements are fractionated because the abundance of ....

A study of rare earth element (REE)–SiO2 variations in ,

Mar 08, 2008· Original Paper; Published: 08 March 2008 A study of rare earth element (REE)–SiO 2 variations in felsic liquids generated by basalt fractionation and amphibolite melting: a potential test for discriminating between the two different process James G Brophy 1 ; Contributions to Mineralogy and Petrology volume 156, pages 337–357 (2008)Cite this article...

(PDF) The Recovery of Rare-Earth Elements from Apatite ,

In this article, the recovery of the Y, La, Nd, and Ce rare-earth elements (REE) from apatite concentrate by acid leaching and digestion-water leaching processes were studied...

Evolution of carbonated melt to alkali basalt in the South ,

Jan 23, 2017· Carbonated silicate melts were converted to alkali basaltic melts through reactions with the lithospheric mantle, during which precipitation of apatite accounts for reduction of light rare earth ....

Apatite/liquid partition coefficients for the rare earth ,

Dec 01, 1981· Sixteen sets of apatite/liquid partition coefficients (D ap/liq) for the rare earth elements (REE; La, Sm, Dy, Lu) and six values for Sr were experimentally determined in natural systems ranging from basanite to graniteThe apatite + melt (glass) assemblages were obtained from starting glasses artificially enriched in REE, Sr and fluorapatite components; these were run under dry and hydrous ....

Lunar apatite with terrestrial volatile abundances | Nature

Jul 22, 2010· The Apollo 14 lunar sample 14053 is a high-Al basalt rich in K, rare-earth elements and , is texturally associated with anhedral apatite having variable Cl and rare-earth-element contents, and ....

Exceptional REE-enrichment in apatite during the low ,

Exceptional REE-enrichment in apatite during the low pressure fractional crystallisation of alkali olivine basalt; an example from the British Tertiary Igneous Province - Volume 90 Issue 4...

Apatite Replacement and Rare Earth Mobilization ,

During an electron microscope study of the weathering of granite from southern New South Wales, Australia, an assemblage of minerals including florencite and rhabdophane was discovered replacing apatite Light rare earth elements released from allanite early in weathering apparently combined with P released by leaching of primary apatite to form secondary phases exhibiting a range of ....

ARTICLE IN PRESS

rare earth elements and Y (Hall, 1987; Grauch, 1989), and that Cu occurs as sulfides in most igneous rocks (Albaréde, 2004) We recognize that the reactivities of apatite and chalcopyrite toward organic acids and dissolved oxygen are likely to be very different However, we ,...

Chemical Heterogeneity and Metasomatism in the Upper ,

atomic number rare earth elements (lree), and are a priori evidence for mantle heterogeneity The chondrite-normalized rare earth abundances of separated apatite, clinopyroxene, amphiboles and micas are high, with La in apatite being up to 4600 times chondrite Apatites show a significant variation in rare earth content and in...

(PDF) Rare Earth Element Behaviour in Apatite from the ,

Aug 02, 2017· Based on compositional data for zoned apatite, we evaluate whether changes in the morphology and the rare earth element and Y (REY) chemistry of apatite ,...

(PDF) Basaltic dykes in evaporites: A natural analogue

Abstract and Figur We present rare earth element (REE) data of basalt and salt samples from central Germany where basaltic dykes of Tertiary age crosscut Upper Permian rock and potash salt The ....

Metasomatism of the off-cratonic lithospheric mantle ,

2 天前· Rare Earth Element (REE) , These works note the presence of rare phlogopite, amphibole, apatite, alkali feldspar, and interstitial silicate glass (1%) , located close to the melt source must have LREE-MREE abundances much higher than those in the host basalt Near the percolation front, elements are fractionated because the abundance of ....

Unlocking Rare Earth Elements From European Apatite-Iron ,

for most rare earth elements Highest values were obtained for Ce, while La, Nd and Y were only detected in some apatite grains Total contents for rare earth element oxides (REO) including only La, Ce and Nd are in the range of 004 to 091 with an average of 025 percent by weight (Table 1)...

(PDF) Lunar apatite with terrestrial volatile abundances ,

ap The Apollo 14 lunar sample 14053 is a high-Al basalt rich in K, rare-earth elements and P (KREEP), consisting dominantly of augite plag and plagioclase with lesser ilmenite, chromite-ulvo¨spinel, tridymite, Fe-Ni metal, and mesostasis containing fayalitic olivine, troilite, trid K-Ba-rich glass, K-feldspar, F-Cl-bearing apatite, merrillite ....

Lunar apatite with terrestrial volatile abundances | Nature

Jul 22, 2010· The Apollo 14 lunar sample 14053 is a high-Al basalt rich in K, rare-earth elements and , is texturally associated with anhedral apatite having variable Cl and rare-earth-element contents, and ....

Rare earth element release from phosphate minerals in the ,

Research paper Rare earth element release from phosphate minerals in the presence of organic acids Keith W Goynea,b,⁎, Susan L Brantleyc, Jon Chorovera a Department of Soil, Water and Environmental Science, University of Arizona, 429 Shantz Bldg, Tucson, AZ 85721, United States b Department of Soil, Environmental and Atmospheric Sciences, University of Missouri, 302 ABNR ,...

Mobility of Rare Earth Elements in Basalt‐Derived Laterite ,

The main minerals of this rock are pyroxene, plagioclase, mica, amphibole Many studies have demonstrated the presence of rare earth elements in basalt rocks [5, 28,29] The presence of rare earth ....

Rare earth elements in apatite and magnetite in Kiruna ,

Jun 01, 1995· Rare earth element characteristics of apatite in different iron ore types The apatite of the Kiruna iron ores in northern Swe- den contains about 1250-6700 ppm REE (Table 1) There is a weak fractionation with (La/Yb)cn = 3-7 and negative Eu anomalies (Eu/Eu*=-025 to - 067, Fig 5A)...

The Rare Earth Elements (REE)

Lecture 16 Rare Earth Elements and Spider Diagrams Monday, March 21st, 2005 , Ocean island basalt plotted on a mid-ocean ridge basalt (MORB) normalized spider diagram of the type used , and apatite also concentrate Y, so the presence of these as accessories could have a significant effect...

ARTICLE IN PRESS

rare earth elements and Y (Hall, 1987; Grauch, 1989), and that Cu occurs as sulfides in most igneous rocks (Albaréde, 2004) We recognize that the reactivities of apatite and chalcopyrite toward organic acids and dissolved oxygen are likely to be very different However, we ,...

Review Article Rare Earth Doped Apatite Nanomaterials for ,

properties of apatite nanoparticl For example, the doping of rare earth elements such as Eu 3+ normally caused the size decrease in cross-section direction of needle-like hydroxya-patite crystals and inhibited the crystallinite of apatite [ ] ese changes also in uence the solubility as well as the...

(PDF) Evolution of carbonated melt to alkali basalt in the ,

Jan 23, 2017· The volcanic glasses are relatively enriched in alkalis and light rare earth elements (LREEs) and depleted in heavy REEs (HREEs), exhibit slightly positive anomalies in ,...

Rare earth element systematics in boiled fluids from ,

T1 - Rare earth element systematics in boiled fluids from basalt-hosted geothermal systems AU - Fowler, Andrew PG AU - Zierenberg, Robert A AU - Reed, Mark H AU - Palandri, Jam AU - Óskarsson, Finnbogi AU - Gunnarsson, Ingvi N1 - Funding Information: All data for this paper is properly cited and referred to in the reference list...

The Rare Earth Elements (REE)

Lecture 16 Rare Earth Elements and Spider Diagrams Monday, March 21st, 2005 , Ocean island basalt plotted on a mid-ocean ridge basalt (MORB) normalized spider diagram of the type used , and apatite also concentrate Y, so the presence of these as accessories could have a significant effect...

Apatite enrichment by rare earth elements: A review of the ,

Mar 01, 2019· Rare earth elements are vital to green and emerging technologies, with demand set to outstrip supply Apatite provides a possible future source of REE Processing rare earth deposits is often complex, with surface behaviour having a significant effect on the optimization of a process flow sheet...