 | | Journal (article/letter/editorial) | | Hydrothermal zircons and zircon overgrowths, Sierra Blanca Peaks, Texasx Jnrrnnv N. RunrN, Cnnrsropnnn D....Geology, The University of Texas at Austin, University Station, Box X, Austin, Texas 78713, U.S.A Ansrnlcr...Ansrnlcr Zircons from the Sierra Blanca Peaks, a group of mildly peraluminous, rare-elementenriched rhyolite...generallyare enriched in Y, Hf, Th, and U relative to cores.Magmatic zircons from the Sierra Blanca intrusion show...show a negative correlation between Y and U contents. Overgrowths from the Round Top intrusion have generally |  | | Journal (article/letter/editorial) | | Trans-Pecos, Texas Brent A. Elliott The Bureau of Economic Geology, The University of Texas at Austin,... Austin, TX 78712, USA; brent.elliott@beg.utexas.edu; Tel.: +1-512-471-1812 Received: 9 August 2018;...rhyolite located in Trans-Pecos Texas is enriched in Be, F, Li, Nb, Rb, Sn, Th, U, Y, Zr, and rare earth elements...incorporated in synchysite-group minerals, xenotime-(Y), Y- and Ce-rich fluorite, and zircon. The rhyolite...consistent with the elevated and remobilized Zr, Th, and Y + HREE (heavy rare earth element) concentrations and |  | | Journal (article/letter/editorial) | | Universityof Texas at Austin, Austin, TX 78712, USA bBureau of Economic Geology, Universityof Texas at Austin...78713-7508, USA CNevadaBureau of Mines and Geology, UniversityofNevada-Reno, Reno, NV89557-0088, USA (Received...locations in the Trans-Pecos Magrnatic Province, Texas, U.S.A., demonstrate this hydrothermal Zr mobility...rare-earth elements (REE), Y, Nb, Mo, Hf, Pb, Th and U. The Sierra Blanca intrusions, a series of mildly...Ertsberg District of Irian Jaya, Indonesia. Unlike in Texas, related igneous rocks are metaluminous, and the |  | | Journal (article/letter/editorial) | | 1007/s00710-013-0318-y ORIGINAL PAPER Composition of coexisting zircon and xenotime in rare-metal granites...Springer-Verlag Wien 2013 Abstract Zircon and xenotime, from two mineralogically and chemically contrasting...variability with respect to abundances of Zr, Hf, REE, Y, P, Th, Ca, Al, Fe and As. According to their geochemical...are characterized by a variety of complex zircon-xenotime textures. They are usually strong hydrated and...granites has lower P and higher Y (up to 0.15 apfu Y). The xenotime-type substitution is the most important |  | | Journal (article/letter/editorial) | | star, PA subgroup. (a) ANK vs. ACNK plot. (b) Nb vs Y discrimination diagram. (c) Rb vs. Yb+Ta discrimination...microprobe analysis (EMPA), the counting time on peaks was 10 s for major elements and 20 60 s for minor...with standard ZAF correction procedures. Synthetic Y and REE pentaphosphates [YP5O14 and (REE)P5O14] were...voltage 15 kV, probe current 20 nA, counting time on peaks 10 s except for uranium (50 s). Counting times on...: below detection limit (Th: 100 ppm; U: 100 ppm; Y: 200 ppm; P: 100 ppm; Pb: 200 ppm) n.a.: not analysed |  | Xie, Lei, Wang, Rucheng, Chen, Jun, Zhu, Jinchu, Zhang, Wenlan, Lu, Jianjun, Zhang, Rongqing (2013) A tin-mineralized topaz rhyolite dike with coeval topaz granite enclaves at Qiguling in the Qitianling tin district, southern China. Lithos, 170. 252-268 doi:10.1016/j.lithos.2013.03.001 | Journal (article/letter/editorial) | | 71 3.04 0.07 1300 Be (ppm) Li Rb Cs Sr Ba Ga Sc Y Zr Hf Nb Ta Sn W Th U V Pb Measured value Reference...A/CNK A/NK FeO/MgO Be (ppm) Li Rb Cs Sr Ba Ga Sc Y Zr Hf Nb Ta Sn W Th U Cr V Pb Rb/Sr Zr/Hf Nb/Ta Th/U...generally surrounded by anhedral xenotime-(Y) (Fig. 8a). In addition to common UâThâY mineral inclusions, the...zircon rims that also contain low concentrations of Y and P. Zircon U concentrations are variable, reaching...minerals (Fig. 8d). They contain uncommon thorite and xenotime inclusions and rare ïŹuorite inclusions (Fig. 8c) |  | | Journal (article/letter/editorial) | | elements (REE, with the exception of Eu), as well as Y, Th, U, and other high-field-strength elements (Zr...Förster 1999). In this fourth paper in a series on REEâYâThâU-rich accessory minerals in peraluminous granites...Johan 1993). The chemical composition of primary REEâYâThâ U-rich accessory minerals in the Variscan granites...Erzgebirge, including monazite (Förster 1998a), xenotime (Förster 1998b), thorite and zircon (Förster 1998c)...monazite-(Ce) rich in the huttonite component, brabantite, xenotime extremely rich in heavy rare-earth elements (HREE) |  | | Journal (article/letter/editorial) | | intermediate solid solutions in the system thoriteâxenotimeâzirconâcoffinite H.-J. FoÌrster * University of...intermediate solid solutions of the tetragonal thoriteâxenotimeâzirconâcoffinite mineral group with partially...wt.% Y2O3, 16.1 wt.% ZrO2, and 23.3 wt.% UO2. Xenotime and zircon have incorporated Th in abundances...observed to exist between thorite and xenotime, thorite and coffinite, and YâHREE-bearing thorite and zircon...intermediate solid solutions between anhydrous zircon and xenotime, and anhydrous zircon and thorite, are not observed |  | Seifert, Wolfgang, Förster, Hans-JĂŒrgen, Rhede, Dieter, Tietz, Olaf, Ulrych, JaromĂr (2012) Mineral inclusions in placer zircon from the OhĆe (Eger) Graben: new data on âstrontiopyrochloreâ. Mineralogy and Petrology, 106 (1) 39-53 doi:10.1007/s00710-012-0221-y | Journal (article/letter/editorial) | | Petrol (2012) 106:39â53 DOI 10.1007/s00710-012-0221-y ORIGINAL PAPER Mineral inclusions in placer zircon...primary fergusonite-like inclusions into undefined NbâYâREEâFe Editorial handling: L. Nasdala W. Seifert...with goethite-like minerals. Thorite and related YâREEâTh silicate phases are the most frequent secondary...feldspar, fluorapatite, baddeleyite, thorite, and YâREEâTh silicate are common inclusion phases in zircon...Fergusonite-like mineral FeOOH mineral Ilmenite Magnetite NbâYâREEâFe oxide Pyrochlore Rutile Thorianite Uraninite |  | | Journal (article/letter/editorial) | | JosĂ© GONZĂLEZ DEL TĂNAGO Departamento de PetrologĂa y GeoquĂmica, Faculdad de Ciencias GeolĂłgicas, Universidad...(16.58 wt.% HfO2), U (4.83% UO2), Th (4.87% ThO2), Y (8.51% Y2O3), and HREE (3.78% HREE2O3), and the lowest...(16.58 wt.% HfO2), U (4.83% UO2), Th (4.87% ThO2), Y (8.51% Y2O3), et terres rares lourdes (3.78% des oxydes)...zircon varies widely owing to solid solution with xenotime (Y, HREE), and the substitution Zrâ1(Hf,Th,U)1....Lowery et al. 2006). Some trace elements (Hf, Th, U, Y, HREE) attain a very high concentration in zircon |  | Cabral Pinto, Marina, Silva, Maria, Neiva, Ana, GuimarĂŁes, Fernanda, Silva, Paulo (2018) Release, Migration, Sorption, and (Re)Precipitation of U during Peraluminous Granite Alteration under Oxidizing Conditions in Central Portugal. Geosciences, 8 (3) 95 doi:10.3390/geosciences8030095 | Journal (article/letter/editorial) | | meta-saleeite, and thoriteâand U-bearing mineralsâsuch as xenotime, monazite, apatite, and zirconâfrom unaltered...replaced apatite and monazite, was associated with xenotime, and filled the fractures of several minerals...were frequently replaced by thorite. Monazite and xenotime from the altered granite and hydrothermal veins...the unaltered granite. In the altered granite, xenotime crystals were zoned, and their cores were richer...thorite, huttonite, thorianite, monazite, titanite, xenotime, allanite, zircon) host uranium, and their alteration |  | Lisowiec, Katarzyna, BudzyĆ, Bartosz, SĆaby, Ewa, Renno, Axel D., Götze, Jens (2013) Fluid-induced magmatic and post-magmatic zircon and monazite patterns in granitoid pluton and related rhyolitic bodies. Geochemistry, 73 (2) 163-179 doi:10.1016/j.chemer.2012.07.005 | Journal (article/letter/editorial) | | interaction which is indicated by elevated contents of Y, P, Th, and U in altered zircon domains. This can...monazite from the granite are accompanied by ïŹuorite, Y-rich and Nb-rich minerals. The alteration of primary... Some of them, particularly zircon, monazite, xenotime, and apatite are the main hosts of rare earth...Fl, ïŹuorite; Ilm, ilmenite; Mnz, monazite; Xnt, xenotime; Zrn, zircon. â Corresponding author at: University...crystal Standard Peak and background time [s] Al Y Pr Dy Si P Nd Tb Pb Sm Tm Th Eu Yb U Gd Ho Ca La Ce |  | | Journal (article/letter/editorial) | | quartzolite; (3) during alteration of fergusonite-(Y) in a quartz-epidote metasomatite; (4) following exsolution...have shown limited mobility in these samples. K E Y WO R D S : ThSiO4, hydrothermal alteration, geochemical...references also being given in Table 1. Numerous Zr-Y-REE-Nb ore occurrences and deposits are associated...restricted to an occurrence in altered fergusonite-(Y). Important differences in the compositions of the...Keivy massif (sample 1-93) has low La/Ce, high Gd/Y, high Th (â€2.03 wt.% ThO2) and high Nb (â€1.13 wt.% |  | Li, Xu-Ping, Zhang, Li-Fei, Wilde, Simon A., Song, Biao, Liu, Xiao-Ming (2010) Zircons from rodingite in the Western Tianshan serpentinite complex: Mineral chemistry and UâPb ages define nature and timing of rodingitization. Lithos, 118 (1) 17-34 doi:10.1016/j.lithos.2010.03.009 | Journal (article/letter/editorial) | | trace elements, e.g. REE, V, Ti, Nb, Hf, Sc, Mn, U, Y, Th, Nb, Ta and other incompatible elements (Rubin...quartz, Fe-oxy-hydroxide, smectite, chlorite, xenotime-(Y), thortveitite, yttrialite, and allanite-(Ce)...al. / Lithos 118 (2010) 17â34 25 Yb Lu ÎŁREE Y Nb Ta (Sm/La)N (Lu/Gd)N Ta/Nb (Ce/Ce*)N (Eu/Eu*)N...phase, which becomes especially enriched in REE, Y and Nb, and possibly P. This REE-rich ïŹuid then enters...chlorite. apatite, monazite and xenotime. For example, the strong enrichment in Y of some zircon grains indicates |  | Wulser, P.-A., Brugger, J., Foden, J., Pfeifer, H.-R. (2011) The Sandstone-Hosted Beverley Uranium Deposit, Lake Frome Basin, South Australia: Mineralogy, Geochemistry, and a Time-Constrained Model for Its Genesis. Economic Geology, 106 (5) 835-867 doi:10.2113/econgeo.106.5.835 | Journal (article/letter/editorial) | | lesser Zn, light rare earth elements (LREE), and Y (Marsland-Smith, 2005). The chemistry of the retrieved...REE-rich zircons, leading to saturation in signals for Y, Er, and Yb. XRF whole-rock analyses were performed...U-, Th-, and REE-rich phases. Zircon, rutile, xenotime, monazite, polycrase, fergusonite, allanite, thorite...S1 L1 AB1 <1 % 100 Q3 Q2 Q1 H B (101) P Y R A M I D S 1-5 % None (100) (100)<<(110) a)...kV, 20 nA, spot size 1 ”m Zircon, apatite, and xenotime 20 kV, 20 nA, spot size 1 ”m Line Crystal Standard |  | | Report (issue) | | Photograph of the Mountain Pass Mine in San Bernardino County, California, which was the only active producer...Tellurium Rhenium Symbol Ti Mn F Ba C Zr V Ce Nd La Y Co Sc Li Nb Ga Pr Sm Gd Dy Er Yb Hf Be Sn Eu Ta Ge...of gravels in the Mother Lode gold belt of the Sierra Nevada Mountains. Hydraulic mining uses high-pressure...Creek (Ottawa County) 6 Oklahoma OKD980629844 1900 n.a. 1967 9/8/1983 Cherokee County 7 Kansas...Madison County Mines 7 Missouri MOD098633415 1840 n.a. Historical 9/29/2003 Newton County Mine Tailings |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | Zolensky: Lyndon Johnson Space Center, Houston, Texas. We also wish to acknowledge our present editor...example, tritomite-(Ce) and tritomite-(Y) are end members [Ce+Y] in the tritomite series [AM 51:152(1966)]...nal order detectable by diffract at least a implies y generall here use fied exhibits external faces, but...where h, k and] are positive or negative, unequal y elesymmetr all by upon acted are faces al the general...spacing, and subscripted by the relative intensit y from 10 down to 1. The pattern is preceded by the |
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