 | Gonçalves, Guilherme O., Lana, Cristiano, Buick, Ian S., Alkmim, Fernando F., Scholz, Ricardo, Queiroga, Glaucia (2019) Twenty million years of post-orogenic fluid production and hydrothermal mineralization across the external Araçuaí orogen and adjacent São Francisco craton, SE Brazil. Lithos, 342. 557-572 doi:10.1016/j.lithos.2019.04.022 | Journal (article/letter/editorial) | | Araçuaí orogen and adjacent São Francisco craton, SE Brazil Guilherme O. Gonçalves, Cristiano Lana, Ian S...Araçuaí orogen and adjacent São Francisco craton, SE Brazil, LITHOS, https://doi.org/ 10.1016/j.lithos.2019...Araçuaí orogen and adjacent São Francisco craton, SE Brazil Guilherme O. Gonçalvesa,* goncalves.go@icloud.com... Universidade Federal de Ouro Preto, Escola de Minas, Departamento de Geologia, Campus Morro do Cruzeiro...craton). U-Pb crystallization ages for hydrothermal monazite, rutile, and xenotime indicate that fluid circulation |  | Cabral, Alexandre Raphael, Wiedenbeck, Michael, Koglin, Nikola, Lehmann, Bernd, de Abreu, Francisco R. (2012) Boron-isotopic constraints on the petrogenesis of hematitic phyllite in the southern Serra do Espinhaço, Minas Gerais, Brazil. Lithos, 140. 224-233 doi:10.1016/j.lithos.2012.01.011 | Journal (article/letter/editorial) | | phyllite in the southern Serra do Espinhaço, Minas Gerais, Brazil Alexandre Raphael Cabral a,⁎, Michael Wiedenbeck...Praça Ramos de Azevedo 206, 01037-010 São Paulo-SP, Brazil b c a r t i c l e i n f o Article history: Received...SIMS Hematitic phylite Southern Serra do Espinhaço Brazil a b s t r a c t Metasiliciclastic rocks predominate...Supergroup, in the southern Serra do Espinhaço, Minas Gerais, Brazil. The lower units also comprise rocks with...hematítico, in the southern Serra do Espinhaço of Minas Gerais, Brazil, has been used as a palaeoclimatic indicator |  | Montel, Jean-Marc, Razafimahatratra, Dieudonne, de Parseval, Philippe, Poitrasson, Franck, Moine, Bernard, Seydoux-Guillaume, Anne-Magali, Pik, Raphaël, Arnaud, Nicolas, Gibert, François (2018) The giant monazite crystals from Manangotry (Madagascar) Chemical Geology, 484. 36-50 doi:10.1016/j.chemgeo.2017.10.034 | Journal (article/letter/editorial) | | Accepted Manuscript The giant monazite crystals from Manangotry (Madagascar) Jean-Marc Montel, Dieudonne...Pik, Nicolas Arnaud, François Gibert , The giant monazite crystals from Manangotry (Madagascar). The address...MANUSCRIPT Montel et al., Giant monazite from Mangotry The giant monazite crystals from Manangotry (Madagascar)... 1 ACCEPTED MANUSCRIPT Montel et al., Giant monazite from Mangotry Abstract The Manangotry area in...South-East of Madagascar is famous for its giant monazite crystals. The studied occurrence is an outcrop |  | Seydoux-Guillaume, Anne-Magali, Freydier, Rémi, Poitrasson, Franck, D 'Abzac, François-Xavier, Wirth, Richard, Datas, Lucien (2010) Dominance of mechanical over thermally induced damage during femtosecond laser ablation of monazite. European Journal of Mineralogy, 22 (2) 235-244 doi:10.1127/0935-1221/2010/0022-2001 | Journal (article/letter/editorial) | | induced damage during femtosecond laser ablation of monazite ANNE- MAGALI SEYDOUX-GUILLAUME1,*, RÉMI FREYDIER1...mJ/pulse, objective 15) of a well-characterized monazite on its micro- and nano-structure were investigated...follow the evolution of laser-induced damage in monazite using Scanning Electron Microscope (SEM), and...vicinity of craters. After the first pulse, the monazite lattice is highly strained to depths greater than...demonstrating that the damaged monazite is a mosaic crystal. Under this area monazite is moderately strained |  | | Journal (issue) | | karst in the quartzite rocks of Diamantina, Minas Gerais, Brazil ..………….……….………………… 16 Dumitru FRUNZESCU...KARST IN THE QUARTZITE ROCKS OF DIAMANTINA, MINAS GERAIS, BRAZIL Heinrich Adolf HORN1, Essaid BILAL2, Hernando...RODET5 1 IGC-UFMG, Universidade Federal de Minas Gerais, Belo Horizonte-MG UMR CNRS 5600 EVS-ENSMSE-Géosciences...processes should not be considered "pseudo karsts". In Brazil, the studies of the non-carbonate karsts are more...quartzites in São Paulo, Tocantins, Mato Grosso, Minas Gerais, and Rio Grande do Sul and Roraima States. These |  | | Book | | 1982 Jules Roger Sauer ” Foreword For years Brazil has been the major producer of colored stones in...metamorphic rocks, the variety of gem deposits in Brazil is almost infinite. In addition to the mineral...assemblage one might expect from pegmatite dikes, Brazil also produces a very significant output of diamonds...written in English, and beautifully illustrated. “Brazil, Paradise of Gemstones’, by Jules Roger Sauer,...Century. The book is a showcase ofthe best from Brazil and it makes a handsome evocation of what is beautiful |  | | Book | | BARTORELLI ::• . . .. MINERALS & PRECIOUS STONES OF BRAZIL Sponsored by: VALE MINISTER.IO DA CULTURA ©...Lavra do Sapo, Ferruginha, Conselheiro Pena, Minas Gerais. Collection of Alvaro Lucio. Photograph taken...Brasileira do Livro, SP, Brazil) Cornejo, Carlos .Minerals & precious stones of Brazil. Carlos Cornejo, Andrea...3. Minerals - Brazil 4. Minerals- Classification 5. Mineralogy 6. Mineralogy - Brazil - History 7. Precious...Precious stones - Brazil I. Bartorelli, Andrea. II. Title. 09-10025 Cover photograph: Crystal of brazilianite |  | Erickson, Timmons M., Timms, Nicholas E., Kirkland, Christopher L., Tohver, Eric, Cavosie, Aaron J., Pearce, Mark A., Reddy, Steven M. (2017) Shocked monazite chronometry: integrating microstructural and in situ isotopic age data for determining precise impact ages. Contributions to Mineralogy and Petrology, 172 (2) doi:10.1007/s00410-017-1328-2 | Journal (article/letter/editorial) | | 1007/s00410-017-1328-2 ORIGINAL PAPER Shocked monazite chronometry: integrating microstructural and in...Abstract Monazite is a robust geochronometer and occurs in a wide range of rock types. Monazite also records...constrained. We have, therefore, analyzed shock-deformed monazite grains from the central uplift of the Vredefort...impact melt from the Araguainha impact structure, Brazil, using electron backscatter diffraction, electron...(SIMS). Crystallographic orientation mapping of monazite grains from both impact structures reveals a similar |  | Ma, Wei-Dong, Fan, Hong-Rui, Liu, Xuan, Pirajno, Franco, Hu, Fang-Fang, Yang, Kui-Feng, Yang, Yue-Heng, Xu, Wen-Gang, Jiang, Peng (2017) Geochronological framework of the Xiadian gold deposit in the Jiaodong province, China: Implications for the timing of gold mineralization. Ore Geology Reviews, 86. 196-211 doi:10.1016/j.oregeorev.2017.02.016 | Journal (article/letter/editorial) | | controversial. Here, we present precise in-situ monazite U-Pb dating to constrain the age of the gold mineralization...determined by LA–ICPMS U–Pb dating on hydrothermal monazite from quartz–polymetallic sulfide veins. Prior...thinning in the North China Craton. Keywords: Monazite U-Pb geochronology; Molybdenite Re–Os dating;...associated geological event remain equivocal. Monazite, if present, is an ideal mineral for dating mineralization...Suzuki and Adachi, 1994). In-situ U–Pb dating of monazite is capable of eliminating possible mixing of distinct |  | Courtieu, Clément, d'Abzac, François-Xavier, Chmeleff, Jérôme, Guillaume, Damien, Seydoux-Guillaume, Anne-Magali (2011) Performances of 800 nm femtosecond laser ablation on natural and synthetic quartz. European Journal of Mineralogy, 23 (3) 391-400 doi:10.1127/0935-1221/2011/0023-2113 | Journal (article/letter/editorial) | | d’Abzac, F.X., Seydoux-Guillaume, A.M., Chmeleff, J., Datas, L., Poitrasson, F. (2010): The influence of femtosecond...implications for LA-ICP-MS analysis of natural monazite. AGU, Fall Meeting 2010, San Francisco. de Parseval...Acknowledgements: The authors would like to thank Lucien Datas for his help with TEM analyses and Christian Dominici...coupled plasma mass spectrometry analysis in glass, monazite, and zircon. Anal. Chem., 75, 6184–6190. Poty... R., Poitrasson, F., d’Abzac, F.X., Wirth, R., Datas, L. (2010): Dominance of mechanical over thermally |  | | Journal (article/letter/editorial) | | with euxenite crystals and fewer xenotime and monazite crystals, the whole of which is included in a...1995 and Montel and Giot, 2013). Xenotime and monazite do not show evidence for alteration, but for the...(Utsunomiya et al., 2004; Valley et al., 2014). In monazite, Seydoux-Guillaume et al. (2003) also revealed...euxenite to other minerals is realistic. Secondary monazite and xenotime elsewhere in the Iveland–Evje field...highly porous. Acknowledgements The authors thank L. Datas (TEMSCAN Toulouse), C. Dominici (FIB-CP2M-Marseille) |  | | Report (issue) | | Occurrence Of Monazite GEOLOGICAL SURVEY PROFESSIONAL PAPER 530 The Geologic Occurrence Of Monazite By WILLIAM...of monazite and of the geologic A review controls affecting the amount of thorium in monazite UNITED...________________ - ___ -_-_------Description of monazite __ ---- _____________ -----Discovery, synonymy...Age relations _________________ ----_-_-_--------Monazite localities ___ --- _______ -- ____________ -----_Africa... 43 43 43 43 46 47 47 48 48 48 49 50 50 51 Monazite localities-Continued Asia ______________ - -- |  | Seydoux-Guillaume, Anne-Magali, David, Marie-Laure, Alix, Kevin, Datas, Lucien, Bingen, Bernard (2016) Trapping of helium in nano-bubbles in euxenite: Positive identification and implications. Earth and Planetary Science Letters, 448. 133-139 doi:10.1016/j.epsl.2016.05.013 | Journal (article/letter/editorial) | | ∗ , Marie-Laure David b , Kevin Alix b , Lucien Datas c , Bernard Bingen d a Laboratoire Magmas et Volcans...Radioactive uranium-thorium minerals like zircon, monazite, pyrochlore, zirconolite, have been extensively...al., 2009), thorite in monazite (Seydoux-Guillaume et al., 2007, 2012), monazite in plagioclase, cordierite...plagioclase matrix and associated with zircon, monazite, and xenotime (Seydoux-Guillaume et al., 2015;...the literature. Mineral Ideal formula Monazite (Moacyr) Monazite (DIG19) Uraninite (Pen Ar Ran) Fergusonite |  | | Journal (article/letter/editorial) | | LA-ICP-MS analysis of NIST glasses, zircon and monazite have shown improved analytical performance with...208Pb/ 232Th in LA-ICP-MS analysis of NIST 610 and monazite (d'Abzac et al., 2010). The formation of fine particles...performance of UV-fs and ns-LA-ICP-MS analyses of glass, monazite, and zircon. More precise, repeatable, and accurate...IR-fs-LA-ICP-MS to ablate and analyze geomaterials, such as monazite, zircon and synthetic glass SRMs, with emphasis...energy and pulse width on the LA-ICP-MS analysis of monazite. Journal of Analytical Atomic Spectrometry 25 |  | | Journal (article/letter/editorial) | | 4036–4043 www.elsevier.com/locate/gca Pb diffusion in monazite: New constraints from the experimental study of...annealing of Pb-bearing monazite thin films deposited on Ca-bearing monazite polycrystals to investigate...datasets yields an Arrhenius law for Pb diffusion in monazite with parameters: E ¼ 494 17 kJ mol1 ; log D0...that most of the perturbations in U–Th–Pb ages of monazite cannot be attributed to Pb diffusion. 2007 Elsevier...INTRODUCTION The knowledge of Pb diffusivities in monazite is important to determine whether or not Pb diffusion |  | Duran, Charley J., Seydoux-Guillaume, Anne-Magali, Bingen, Bernard, Gouy, Sophie, de Parseval, Philippe, Ingrin, Jannick, Guillaume, Damien (2016) Fluid-mediated alteration of (Y,REE,U,Th)–(Nb,Ta,Ti) oxide minerals in granitic pegmatite from the Evje-Iveland district, southern Norway. Mineralogy and Petrology, 110 (5) 581-599 doi:10.1007/s00710-016-0436-4 | Journal (article/letter/editorial) | | age of 910 ± 14 Ma (Scherer et al. 2001) and a monazite from another unspecified pegmatite gives a 206Pb/238U...U,Th)–(Nb, Ta,Ti) oxide and zircon with minor monazite and xenotime (Fig. 3a-e, Fig. 4a-f). Plagioclase...several centimeters), in which the oxide, zircon, monazite and xenotime crystals are randomly dispersed and...massif (Hetherington and Harlov 2008) and altered monazite from various localities (SeydouxGuillaume et al...Zr and LREE may have originated from zircon and monazite, respectively. The Mn depletion in pyrochlore |  | Broom-Fendley, Sam, Smith, Martin P, Andrade, Marcelo B, Ray, Santanu, Banks, David A, Loye, Edward, Atencio, Daniel, Pickles, Jonathan R, Wall, Frances (2020) Sulfur-bearing monazite-(Ce) from the Eureka carbonatite, Namibia: oxidation state, substitution mechanism, and formation conditions. Mineralogical Magazine, 84 (1) 35-48 doi:10.1180/mgm.2019.79 | Journal (article/letter/editorial) | | Sulfur-bearing monazite-(Ce) from the Eureka carbonatite, Namibia: oxidation state, substitution mechanism...Paulo, PO Box 369, 13560-970, São Carlos, SP, Brazil 4 School of Earth and Environment, University...562, 05508-080 São Paulo, SP, Brazil Running title: “Sulfur-bearing Monazite-(Ce) from Eureka, Namibia”...1180/mgm.2019.79 Keywords Sulfur-bearing monazite-(Ce) Redox Carbonatite Silcrete ...Calcrete Weathering Abstract Sulfur-bearing monazite-(Ce) occurs in silicified carbonatite at Eureka |  | | Journal (issue) | | Palladium and platinum from Corrego Bom Sucesso, Minas Gerais, B razil...............................471 by...Universitaria Ilha do Fundao 21.190 Rio de Janeiro, Brazil Jeanete N. Alves Departamento de Recursos M inerals—RJ...inerals—RJ Rua Marechal Deodoro 351 24.030 Niteroi, Brazil The Corrego Bom Sucesso prospect is one o f Brazil’s...Horizonte and southeast of Diamantina in central Minas Gerais, Brazil. It is near the historic town of Serro.... Access is by way of the tarred Datas-Serro road (MG 010), from which a small unpaved road branches off |  | Fougerouse, D., Reddy, S.M., Saxey, D.W., Erickson, T.M., Kirkland, C.L., Rickard, W.D.A., Seydoux-Guillaume, A.-M., Clark, C., Buick, I.S. (2018) Nanoscale distribution of Pb in monazite revealed by atom probe microscopy. Chemical Geology, 479. 251-258 doi:10.1016/j.chemgeo.2018.01.020 | Journal (article/letter/editorial) | | com/locate/chemgeo Nanoscale distribution of Pb in monazite revealed by atom probe microscopy ⁎ D. Fougerousea...Editor: Catherine Chauvel The widespread use of monazite (LREEPO4) in U-Pb geochronology is underpinned...investigated the nanoscale distribution of Pb in monazite from granulite facies rocks of the Sandmata Metamorphic...understand the utility of monazite as a geochronometer. The studied monazite contains distinct 10 nm clusters...are also enriched in Si and Pb relative to the monazite host. The 208Pb/232Th ratios of the clusters ranged |  | Grand'Homme, A., Janots, E., Seydoux-Guillaume, A.M., Guillaume, D., Magnin, V., Hövelmann, J., Höschen, C., Boiron, M.C. (2018) Mass transport and fractionation during monazite alteration by anisotropic replacement. Chemical Geology, 484. 51-68 doi:10.1016/j.chemgeo.2017.10.008 | Journal (article/letter/editorial) | | Manuscript Mass transport and fractionation during monazite alteration by anisotropic replacement A. Grand'Homme...Boiron , Mass transport and fractionation during monazite alteration by anisotropic replacement. The address...MANUSCRIPT Mass transport and fractionation during monazite alteration by anisotropic replacement A. Grand’Homme1...magali.seydoux@univ-st-etienne.fr AC Keywords monazite, anisotropic replacement, experimental alteration...Anisotropic propagation of the reaction front during monazite alteration (<600°C). Anisotropic replacement |  | | Journal (issue) | | 0026-4628 'Continued on p. 415 Articles Diamonds in Brazil .................................................Fundao 21.910 Rio de Janeiro, Brazil Since their discovery in Minas Gerais, near the town of Diamantina...mining, fables and dreams. By the end of the 1700’s Brazil had become the world’s leading producer of diamonds...century. fficially the discovery of diamonds in Brazil is dated at 1727. Gold prospectors had found occasional...false idea that Brazil is a producer.” The sheer volume of diamonds coming from Brazil soon overwhelmed |  | 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 DUCHENE2...equilibria modelling, monazite microchemistry, Y-in-monazite thermometry, and monazite U–Th–Pb geochronology...between 1045 ± 8 and 992 ± 11 Ma is recorded by monazite in all samples. This cycle is interpreted to represent...in UHT conditions of ~ 6 kbar and 920 °C. Y-in-monazite thermometry in a residual garnet-absent sapphirine–...conductive cooling to 750800 °C is characterized by monazite reactivity as opposed to silicate metastability |  | Seydoux-Guillaume, A.-M., Fougerouse, D., Laurent, A.T., Gardés, E., Reddy, S.M., Saxey, D.W. (2019) Nanoscale resetting of the Th/Pb system in an isotopically-closed monazite grain: A combined atom probe and transmission electron microscopy study. Geoscience Frontiers, 10 (1) 65-76 doi:10.1016/j.gsf.2018.09.004 | Journal (article/letter/editorial) | | of the Th/Pb system in an isotopically-closed monazite grain: A combined atom probe and transmission...weaknesses of each technique. Here we focus on monazite crystals from a w1 Ga, ultrahigh temperature granulite...Combined APM and TEM characterization of these monazite crystals reveal phase separation that led to the...reservoirs at the nanoscale. The S-rich core of these monazite crystals contains CaeSrich clusters, 5e10 nm in...in size, homogenously distributed within the monazite matrix with a mean interparticle distance of 40e60 |  | | Book (edition) | | International Symposium on Carbonatites in Pocos de Caldas, Brazil for which this writer was keynote speaker. The... Pakistan, Quebec, Finland, Guyana, Venezuela, Brazil, Paraguay, Angola and South-West Africa, i.a. Carbonatites...Quebec and Araxa, Brazil) and important sources of P, Ti, Cu and CaCO; (Jacupiranga, Brazil). In addition...Carbonatites of the World United States Canada Brazil Greenland, Europe, and the U.S.S.R. Africa India...certain elements are represented mineralogically (monazite vs. RE carbonates). As in silicate igneous rocks |  | | Journal (article/letter/editorial) | | french granites. Established on more than 5 000 datas this distinction could be useful in granitic area...min~raux (zircon, allanite, x~notime, apatite, monazite, sph~ne . . . etc. ) qu'on peut appeler min~raux...2,7 % 0, 3 % I, 2 % & 2, 6 % 60 ~ 70% sph~ne monazite 0,6 ~ 1,3% O, 3 % uraninite tobernite 20 %...fix~ DISTRIBUTION DE L'URANIUM uraninite zircon Monazite Min~raux essentiels Fractures 60 8 7 23 2 HCl...l'uran i u m de l'uraninite, 0,3% de celui de la monazite et, en rnoyenne 1,5 % de celui des zircons, on |
|
