Rare Earth Elements In Apatite From Basalt

  • ARTICLE IN PRESS

    ARTICLE IN PRESS

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

  • Cathodoluminescence and microprobe study of rareearth ...

    Cathodoluminescence and microprobe study of rareearth ...

    The microprobe analysis of two of the apatite samples (Durango and Huddersfield) compare favorably with analyses reported in the literature for apatite samples from the same localities. The rareearthelement (REE) content varies from to more than 15 wt% and is generally proportional to Na + Si, suggesting charge compensation for substitution of REE 3+ for Ca 2+ .

  • Evolution of carbonated melt to alkali basalt in the South China Sea .

    Evolution of carbonated melt to alkali basalt in the South China Sea .

     · We identify natural carbonated silie melts, which are enriched in light rare earth elements and depleted in Nb and Ta, and show that they were continuously transformed to alkali basalts .

  • Rare Earth Element Behaviour in Apatite from the Olympic ...

    Rare Earth Element Behaviour in Apatite from the Olympic ...

    In contrast, later hydrothermal apatite, confined to samples where magmatic apatite has been obliterated due to advanced hematitesericite alteration, displays a conspicuous, convex, middle rare earth element (MREE)enriched pattern with a weak negative Eu anomaly. Such grains contain abundant inclusions of florencite and sericite. Within highgrade bornite ores from the deposit, apatite ...

  • Basalt

    Basalt

    Basalt (UK: / ˈ b æ s. ɔː l t,əl t /; US: / b ə ˈ s ɔː l t, ˈ b eɪ ˌ s ɔː l t /) is an aphanitic extrusive igneous rock formed from the rapid cooling of lowviscosity lava rich in magnesium and iron (mafic lava) exposed at or very near the surface of a rocky planet or than 90% of all volcanic rock on Earth is basalt. Rapidcooling, finegrained basalt is chemically ...

  • Rare Earth Elements in apatite as a monitor ...

    Rare Earth Elements in apatite as a monitor ...

    Request PDF | Rare Earth Elements in apatite as a monitor of magmatic and metasomatic processes: the Ilímaussaq complex, South Greenland | Textural and compositional variations of apatite from ...

  • Development of a Rare Earth Element Resource Database ...

    Development of a Rare Earth Element Resource Database ...

    Development of a Rare Earth Element Resource Database Management System Von der Fakultät für Georessourcen und Materialtechnik der RheinischWestfä lischen Technischen Hochschule Aachen zur Erlangung des akademischen Grades eines Doktors der Naturwissenschaften genehmigte Dissertation vorgelegt von Patrick Friedrichs aus Würselen Berichter: Univ.Prof. (em) Dr. rer. Nat. Franz ...

  • Traceelement signatures of apatites in granitoids from ...

    Traceelement signatures of apatites in granitoids from ...

    The concentrations of trace elements in apatite from granitoid rocks of the Mt Isa Inlier have been investigated using the laserablation inductively coupled plasmamass spectrometry (ICPMS) microprobe. The results indie that the distribution of trace elements (especially rareearth elements (REE). Sr, Y, Mn and Th) In apatite strongly reflects the chemical characteristics of the parental ...

  • Space station biomining experiment ...

    Space station biomining experiment ...

     · Table 1 Content of rare earth elements (REEs; reported as μg/g; mean ± standard deviation) in the basalt substrate used in this experiment .

  • Apatites in lunar KREEP basalts: The missing link to understanding .

    Apatites in lunar KREEP basalts: The missing link to understanding .

    Analyses of apatite in phosphorusrich KREEP (K + REE [rare earth elements] + P) basalts may provide more reliable estimates for the water content of lunar magmas, as some apatites likely crystallized before substantial degassing occurred. In lunar KREEP basalt sample 15386, apatite H 2 O content and H isotopic composition suggest that degassing occurred during apatite crystallization, the ...

  • The Rare Earth Content and Origin of AlkaliRich Basalts ...

    The Rare Earth Content and Origin of AlkaliRich Basalts ...

    The rare earth content of alkalirich, silicaundersaturated 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 lowvelocity, lowQ zone of the mantle. The rare earths are fractionated during partial melting by retention of heavy rare earths ...

  • Experimental study on rareearth element partitioning in ...

    Experimental study on rareearth element partitioning in ...

    Partition coefficients of rareearth elements (REE), Ba and Sr were precisely determined for crystal. glass pairs prepared by partial melting and partial solidifiion of alkali olivine basalt at 10kb and of picrite basalt at 10 and 20kb. Mutually unfractionated REE partition patterns were observed for olivineglass pairs prepared by partial melting and partial solidifiion experiments on ...

  • High mass resolution ion microprobe analysis of rare earth ...

    High mass resolution ion microprobe analysis of rare earth ...

     · The concentrations of all rare earth elements (REE: La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu) in silie glass, apatite and zircon were measured by an ion microprobe method with a high mass resolving power of 9300 at 1% peak height.

  • [PDF] Rare earth element abundances in apatite in the ...

    [PDF] Rare earth element abundances in apatite in the ...

    The concentrations of the rare earth elements (REEs) in apatite from a 600mthick sequence toward the top of the Bushveld Complex, South Africa, have previously been published; they show two ranges . Expand. 26. PDF. Save. Alert. Research Feed. Apatite/liquid partition coefficients for the rare earth elements and strontium. E. Watson, T. Green; Geology; 1981; Abstract Sixteen sets of ...

  • Apatite Concentrate, A Potential New Source of Rare Earth ...

    Apatite Concentrate, A Potential New Source of Rare Earth ...

    Request PDF | Apatite Concentrate, A Potential New Source of Rare Earth Elements | Introduction Experimental Results and Discussion Conclusions Future Work Acknowledgments | Find, read and cite ...

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

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

     · A commonly underappreciated aspect of rare earth element (REE) ... (based on the P 2 O 5 contents of the assumed parental basalt). During the calculation, the apatite D values for La and Yb were varied by ± one order of magnitude from the bestfit values. The calculated variations are compared with normalized La and Yb values where the values used for normalization were ones that yielded a ...

  • Chemical heterogeneity and metasomatism in the upper ...

    Chemical heterogeneity and metasomatism in the upper ...

    The chondritenormalized 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 La:Lu ratios, indiing the occurrence of some crystal fractionation. The absence of europium anomalies from all mineral phases is indiive of a relatively ...

  • Rareearth Elements in Apatite from Layered Norites and ...

    Rareearth Elements in Apatite from Layered Norites and ...

    Rareearth Elements in Apatite from Layered Norites and IronTitanium Oxide Orebodies Related to Anorthosites (Rogaland, Norway) IWAN ROELANDTS and JEANCLAIR DUCHESNE GéologiePétrologieGéochimie, Université de Liège, Sart Tilman, Belgium Abstract Rareearth elements (REE) were investigated by neutronactivation analysis in nine apatites and seven coexisting plagioclase .

  • (PDF) Regional Geologic and Petrologic ...

    (PDF) Regional Geologic and Petrologic ...

    apatite (IOA) ± rare earth element, iron oxidecoppergold (IOCG), and ironrich sedimentary deposits in the St. Francois Mountains terrane of southeast Missouri, USA. The St. Francois Mountains ...

  • rge 155 140..158 Mobility of Rare Earth Elements in Basalt .

    rge 155 140..158 Mobility of Rare Earth Elements in Basalt .

    Mobility of Rare Earth Elements in BasaltDerived Laterite at the Bolaven Plateau, Southern Laos Kenzo Sanematsu,1 Takeru Moriyama,1* Laochou Sotouky2 and Yasushi Watanabe1 1Institute for GeoResources and Environment, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan and 2Department of Geology, Ministry of Energy and Mines, Lao Abstract .

  • Rare earth element partition between sphene, apatite and ...

    Rare earth element partition between sphene, apatite and ...

    Cumulus apatite, sphene, feldspar, amphibole and biotite from the pulaskite of the Kangerdlugssuaq alkaline intrusion have been analysed for rare earth elements (REE) by instrumental neutron activation analysis. The apatite is particularly rich in REE, contains % Ce and shows a steep, light REEenriched, chondritenormalised pattern. The other minerals have light REE enrichment but with ...

  • Rare earth elements in apatite and magnetite in Kiruna ...

    Rare earth elements in apatite and magnetite in Kiruna ...

     · Rare earth element characteristics of apatite in different iron ore types The apatite of the Kiruna iron ores in northern Swe den contains about ppm REE (Table 1). There is a weak fractionation with (La/Yb)cn = 37 and negative Eu anomalies (Eu/Eu*= to , Fig. 5A). The REE partition of the apatite of the Kiruna ores with a "normal" Pcontent ( < 1% P, Kiirunavaara and ...

  • Recovery of Rare Earth Elements from an Apatite ...

    Recovery of Rare Earth Elements from an Apatite ...

    Rare earth elements (REE) are a group of 17 elements including lanthanides, yttrium and scandium; which are found in a variety of classes of minerals worldwide. The criticality of the appliion, lack of high grade and economically feasible REE resources and a monopolistic supply situation has raised significant attention in recovery of these metals from low grade ores and waste materials. In ...

  • The Cl isotope composition and halogen contents of Apollo ...

    The Cl isotope composition and halogen contents of Apollo ...

     · Typically, the highest δ 37 Cl values in lunar apatite are observed within lithologies such as the Mgsuite, potassium/rareearth elements/phosphorus (KREEP)rich basalts and impact lithologies, which have largely been explained in terms of a primeval KREEP (urKREEP) component [residual melt of lunar magma ocean ] with a characteristically high δ 37 Cl value (2, 3).