 | | Journal (article/letter/editorial) | | wuÌstite ĂŸ wagnerite ĂŸ sarcopside ĂŸ monazite-(Ce) ĂŸ xenotime-(Y) ĂŸ chlorite), included within fluorapatite, was...melting. Wagnerite, wuÌstite, monazite-(Ce), and xenotime-(Y) are commonly intergrown, indicating their cogenetic...graphite, wuÌstite, wagnerite, sarcopside, monazite, xenotime, fluorapatite, electron-microprobe analysis, micro-Raman...maintains charge balance, resulting in a more complex formula Fe2ĂŸ1â3xFe3ĂŸ2x&xO (Smyth et al., 2000)...granite, such as rutile, zircon, monazite-(Ce) and xenotime-(Y), were used to decipher its thermal history and |  | | Journal (article/letter/editorial) | | at StarkoĂš and BĂŹstvina, KutnĂĄ Hora Crystalline Complex Mineralogie abysĂĄlnĂch pegmatitĂč s dumortieritem...crystallization trend expressed by the substitution (Y,ZAl TAl)(Y,ZR2+ TSi4+)-1. Prograde metamorphic event introduced...abyssal pegmatites in high-grade terrains in Antarctica, Norway and Madagascar. Key words: abyssal pegmatite;...dumortierite; tourmaline; KutnĂĄ Hora Crystalline Complex 1. Introduction Abyssal (metamorphic) pegmatites...localities in high-grade metamorphic terranes e.g., in Antarctica (Grew 1981, 1998, Grew et al. 1998a, b, 2000) |  | | Journal (article/letter/editorial) | | U-Th-Pbtotal dating in xenotime: Age constraints from polygenetic Mangalwar Complex, Northwestern India...January 2017 Accepted 18 January 2017 Keywords: Xenotime Monazite Electron microprobe U-Th-Pbtotal dating...bearing minerals (e.g., monazite, zircon, and xenotime) is a lowcost and reliable technique used for...precise estimates of U, Th and Pb concentrations in xenotime. Results were tested on monazite standard (Moacyr...measurements in xenotime. The protocol was further used to resolve polygenetic xenotime ages (ca. 1.82 |  | Macdonald, Ray, BagiĆski, BogusĆaw, Belkin, Harvey E., Stachowicz, Marcin (2019) Composition, paragenesis, and alteration of the chevkinite group of minerals. American Mineralogist, 104 (3) 348-369 doi:10.2138/am-2019-6772 | Journal (article/letter/editorial) | | probably amorphous. With increasing F + CO2 levels, complex replacement assemblages are formed, usually in...where the common cations in each site are: A, REE, Y, Ca, Sr; B, Fe2+; C, Fe2+, Fe3+, Mn, Ti, Al, Zr, Mg;...termed perrierite. If it is assumed that A = Ca, Sr, Y, La, Ce, Nd, Th; B = Mg, Mn, Fe2+; C = Al, Ti, Cr...Gualda (2007): (Ca2+ + Sr2+)A + (Ti4+ + Zr)C â [(REE,Y)3+]A + (M2+,3+)C (Fig. 4). Compositional evolution...against [La/Y]CN [fractionation of LREE from heavy rare earth elements (HREE; Gd-Yb), with Y proxying for |  | Förster, H.-J., Rhede, D., Hecht, L. (2008) Chemical composition of radioactive accessory minerals: implications for the evolution, alteration, age, and uranium fertility of the Fichtelgebirge granites (NE Bavaria, Germany) Neues Jahrbuch fĂŒr Mineralogie - Abhandlungen, 185 (2) 161-182 doi:10.1127/0077-7757/2008/0117 | Journal (article/letter/editorial) | | Namurian intrusive complex (OIC-p and OIC-e) and a younger, post-Westphalian intrusive complex (YIC-1 and YIC-2)...minor thorite, but apparently lack magmatic xenotime-(Y) and uraninite. The more evolved OIC-e two-mica...in Th (up to 21 wt% ThO2) and U (8 wt% UO2), xenotime-(Y) of moderate U content (< 3.3 wt% UO2), and uraninite...high in Th (40.5 wt% ThO2) and U (8.6 wt% UO2), xenotime-(Y) rich in U (6.3 wt% UO2), and also a ThâREE-poor...Electron-microprobe analyses yield a mean UâThâtotal Pb monazite+xenotime age of 321 ± 8 Ma (2Ï) for the OIC, which is further |  | Hetherington, Callum J., Jercinovic, Michael J., Williams, Michael L., Mahan, Kevin (2008) Understanding geologic processes with xenotime: Composition, chronology, and a protocol for electron probe microanalysis. Chemical Geology, 254 (3) 133-147 doi:10.1016/j.chemgeo.2008.05.020 | Journal (article/letter/editorial) | | m g e o Understanding geologic processes with xenotime: Composition, chronology, and a protocol for electron...Article history: Accepted 28 May 2008 Keywords: Xenotime Electron microprobe Total ThâUâPb dating Trace...Trace element analysis A B S T R A C T Xenotime (YPO4) is iso-structural with zircon-group minerals and...with monazite and zircon, naturally occurring xenotime may accommodate signiïŹcant concentrations of rare...marker elements and a potential geochronometer. Xenotime grows in sediments during diagenesis, in low- |  | Bastos Neto, A. C., Pereira, V. P., Pires, A. C., Barbanson, L., Chauvet, A. (2012) FLUORINE-RICH XENOTIME FROM THE WORLD-CLASS MADEIRA Nb-Ta-Sn DEPOSIT ASSOCIATED WITH THE ALBITE-ENRICHED GRANITE AT PITINGA, AMAZONIA, BRAZIL. The Canadian Mineralogist, 50 (6) 1453-1466 doi:10.3749/canmin.50.6.1453 | Journal (article/letter/editorial) | | DOI : 10.3749/canmin.50.6.1453 FLUORINE-RICH XENOTIME FROM THE WORLD-CLASS MADEIRA NbâTaâSn DEPOSIT...Madeira granite (~1,820 Ma). Fluorine (cryolite), Y, REE, Li, Zr, and Th are potential by-products of...of the disseminated ore. We studied the xenotime from the core albite-enriched (CAG), transitional albite-enriched...albiteenriched granite (PAG). In all these rocks, xenotime is magmatic, has high HREE contents (0.37 to 0...detected), and low U, Th and Ca content. The CAG xenotime is the richest in REE, followed by that in the |  | Laurent, Antonin T., Duchene, Stephanie, Bingen, Bernard, Bosse, Valerie, Seydoux-Guillaume, Anne-Magali (2018) Two successive phases of ultrahigh temperature metamorphism in Rogaland, S. Norway: Evidence from Y-in-monazite thermometry. Journal of Metamorphic Geology, 36 (8) 1009-1037 doi:10.1111/jmg.12425 | Journal (article/letter/editorial) | | metamorphism in Rogaland, S. Norway: evidence from Y-in-monazite thermometry ANTONIN T. LAURENT1*, STEPHANIE...plutonic complex. Integrated petrology, phase equilibria modelling, monazite microchemistry, Y-in-monazite...culminating in UHT conditions of ~ 6 kbar and 920 °C. Y-in-monazite thermometry in a residual garnet-absent...conditions of ~ 3.5â5 kbar and 900â950°C, is recorded by Y-rich monazite at 930 ± 6 Ma in an orthopyroxeneâcordieriteâhercynite...is related to the intrusion of the AMC plutonic complex at 931 ± 2 Ma. Thermal preconditioning of the crust |  | | Journal (article/letter/editorial) | | melt (0.7 GPa and 750 °C) to produce a range of complex monazite textures and age patterns similar to those...duration (†24 hours experiment time), variable REE, Y, Th, U and Pb mobility is achieved via coupled di...grains from anatectic environments may produce complex arrays of age data (Kirkland et al., 2016; Taylor...dispersive spectroscopy (WDS) and Th, Ce, U, Pb and Y via energy dispersive spectroscopy (EDS). Data visualisation...Si, Ca, P, S and Th; and (2) 15 kV and 100 nA for Y, La, Ce, Pr, Nd, -p Sm, Eu, Gd, Tb, Dy, U and Pb |  | | Journal (article/letter/editorial) | | Volume 104, pages 1117â1130, 2019 Monazite and xenotime solubility in hydrous, boron-bearing rhyolitic...Abstract We conducted a series of monazite and xenotime dissolution experiments in a boron-bearing silicic...apparatus. We present new measurements of monazite and xenotime solubility in hydrous (~3 wt% water), boron-bearing...structural constituents of those minerals (LREE, P, and Y). We compare our results to the previous studies and...between the solubility of xenotime and temperature in hydrous rhyolitic melts: ln Y ïœ 18.3 ï± 0.3 ï 125499 |  | Chen, Cheng-Hong, Liu, Yung-Hsin, Lee, Chi-Yu, Xiang, Hua, Zhou, Han-Wen (2012) Geochronology of granulite, charnockite and gneiss in the poly-metamorphosed Gaozhou Complex (Yunkai massif), South China: Emphasis on the in-situ EMP monazite dating. Lithos, 144. 109-129 doi:10.1016/j.lithos.2012.04.009 | Journal (article/letter/editorial) | | charnockite and gneiss in the poly-metamorphosed Gaozhou Complex (Yunkai massif), South China: Emphasis on the in-situ...granulite, charnockite and gneiss in the Gaozhou Complex of the Yunkai massif in South China. While the...monazites present zoning (concentric, patchy and complex) in the BSE images, no discernable age differences...With all these data, we suggest that the Gaozhou Complex is a Caledonian high-grade metamorphic terrain...grade, they were grouped as the high-grade Gaozhou Complex, the medium-grade Yunkai Group, and nearly unmetamorphosed |  | | Journal (article/letter/editorial) | | qxxia@ustc.edu.cn (Q.-X. Xia), yfzheng@ustc.edu.cn (Y.-F. Zheng). 0024-4937/$ â see front matter © 2009...Schertl and Okay, 1994). It is separated into eastern and western segments by the Tanlu Fault, respectively...(2003) in which the bright spots in BSE images are YâHREEâTh-rich phases, while dark spots are voids of...of Y (14040 ppm), Nb (18414 ppm), Ta (591 ppm), and MREE (4704 ppm), indicating the presence of YâNbâMREE-rich...Nb Ta La Ce Pb Pr Sr P Nd Sm Zr Hf Eu Ti Gd Tb Dy Y Ho Er Tm Yb Lu 0.742 3.41 8.14 686 1293 167 252 21 |  | | Report (volume) | | mineral phase in the human body. Monazite and xenotime are highlighted in a fourth chapter, which includes...Monazite, Pretulite, and Xenotime Lynn A. Boatner PROPERTIES OF RARE-EARTH-, Sc-, AND Y-ORTHOPHOSPHATES .....PRETULITE, AND XENOTIME ............................... 91 Flux growth of RE-, Sc-, and Y-orthophosphates.................................. 91 RE-, Sc-, and Y-orthophosphate crystal morphology ..................CHEMICAL SYNTHESIS OF MONAZITE, PRETULITE, AND XENOTIME ....................... 97 Urea precipitation |  | | Book | | Chandra Sarkar Anupendu Gupta CAMBRID GE UNIVERSIT Y PRESS Cambridge, New York, Melbourne, Madrid, Cape...Granitoids of Eastern Dharwar Eastern Dharwar Schist Belts Kimberlites and Lamproites Western and Eastern Dharwar...Bauxite Deposits in Central India 313 Chapter 3 Eastern Ghat Belt 319 3.1 Geology and Crustal Evolution...Other Minerals 332 332 332 334 340 Chapter 4 Eastern India 4.1 Geology and Crustal Evolution Introduction...Chhotanagpur GraniteâGneiss Complex Stratigraphic/Geochronologic Sequences in the Eastern India and their Regional |  | | Book (chapter) | | categories have been arranged from simple to more complex. 1. Paramorphs. Paramorphs are the result of polymorphism...mineralogy has been carefully studied and found to be a complex mixture of mostly rare secondary copper minerals...b. Molds (of animals or plants). c. Casts. 8. Complex combinations of the above. There is very little...deposits, the sequence of events can be quite complex, but unraveling that sequence can be quite valuable...fluid. The pentlandite to violarite reaction is complex, contingent upon a great number of solution parameters |  | | Book | | Germany and Instituto de Geociencias BĂĄsicas, Aplicadas y Ambientales de Buenos Aires (IGEBA) CONICET-Universidad...aneinander geschweisst sind [âŠ] Wir nennen es GondwĂĄna-Land nach der gemeinsamen alten GondwĂĄna-Floraâ, and...part of a large continent [âŠ] We name it GondwĂĄna-Land, after the shared Gondwana flora.â Already in his...resemblance to the folded Nama succession on the eastern side of the Atlantic, between Cape Town and LĂŒderitz...with paleomagnetic constraints of Laurentia and Eastern Gondwana, discussing implications for the Ediacaran-Cambrian |  | | Book (volume) | | flows, and aeolian sediment transport originating on land can enter 2 SEDIMENTARY PROCESSES/Particle-Driven...avulsion, resulting in the formation of internally-complex sedimentary fan deposits. Although channels are...subaqueous particulate gravity currents form a complex and variable range of flow types, which together...(1), while ââBagnoldââ expresses view (2); see text y t0/Drsgd, X Drsgd 3/rn2. Particles in âsteadyâ transport...Parameter Drs d e m n r rs t C D d g J N U* u,v,w x,y,z density difference(ÂŒ rsr); unit, kg m 3; dimension |  | | Book | | categories have been arranged from simple to more complex. 1. Paramorphs. Paramorphs are the result of polymorphism...mineralogy has been carefully studied and found to be a complex mixture of mostly rare secondary copper minerals...b. Molds (of animals or plants). c. Casts. 8. Complex combinations of the above. There is very little...deposits, the sequence of events can be quite complex, but unraveling that sequence can be quite valuable...fluid. The pentlandite to violarite reaction is complex, contingent upon a great number of solution parameters |  | | Journal (article/letter/editorial) | | 1016/j.watres.2012.12.041. 1417 T. KAGOSHIMA1*, Y. SANO1, N. TAKAHATA1 2 AND B. MARTY AORI, Univ. Tokyo...nano-formulations on the fate of the active ingredient can be complex and reported results are often contradictory. The...grusified granites muscoviteâthorite or cheraliteâxenotime-(Y) pseudomorphs after primary monazite-(Ce) are...correlates with mean sedimentation rate and distance from land. This relationship can therefore be used to predict...top. Ye*ilova ophiolite in which sheeted dike complex and pillow lavas are not seen, represents an ophiolite |  | | Book (edition) | | - p '..). âą -;_. .,,..,, ~ ... ;. .:-"'It,.. r y l. . u+ 6 8 ,.~ -::-.,.,.:. i,.: ' ,. ' ----~...106.~2 Jl1· ··137.33J 1 .0.9 j 23 3 ,,1.3:r Y 2 1110 Ba 'i 2,3,e 1.ss 2.3.4,5.fl ,..... 1.a3...Sr (f) 30 Na Te \ I \ I Se \ Sc ' \ Ti \ y Si 10 20 30 40 50 Mo Pd Ru Rh Cu 60 ÂŒe...Sb As \ Mn 0 I \ I 10 I I \ I 20 - y Br Ca 70 80 90 100 110 120 130 140 Atom...clover. (a) s y X z z (b) y y X X X z z z y y y X X X (c) d z z y X p X Mineralogy |  | | Book (edition) | | E A R S O N C U S T O M L I B R A R Y Table of Contents Glossary Dexter Perkins 1 1....two optic axes in a biaxial mineral. Anionic complex. A tightly bonded, negatively charged molecular...penetration twins. Cartesian coordinate system. An X-Y-Z coordinate system in which all axes are at 90° and...individual crystals, nearly parallel in arrangement. Complex twin. A twin composed of more than two individual...plane of a biaxial mineral, corresponding to the Y-axis. Oxidize. To remove one or more electrons from |
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