 | | Report (issue) | | from phonolites and nepheline syenites (Minas Gerais, Brazil); in pegmatite (Kabuland, Norway). Association:...(Sudbury, Canada); hydromica, kaolinite, "limonite" (Morro do Ferro, Brazil); fluocerite, bastnasite, tornebohmite...Sierra de Bermjillo, Durango, Mexico. On Morro do Ferro, Pocos de Caldas plateau, Minas Gerais, Brazil...Marvin (1959) Cerianite, Ce02, from Pecos de Caldas, Brazil. Amer. Mineral., 44, 882-884. (3) Neumann |  | | Report (volume) | | Uraniferous Zirconium I Deposits of the Pogos de I Caldas Plateau, Brazil | GEOLOGICAL SURVEY BULLETIN -3...Nacional de Energia Nuclear, Brazil 1185-C The Uraniferous Zirconium Deposits of the Pogos de Caldas...Caldas Plateau, Brazil By GENE E. TOLBERT URANIUM INVESTIGATIONS IN BRAZIL GEOLOGICAL SURVEY BULLETIN...cooperation with the Commissdo Nacional de Energia Nuclear, Brazil UNITED STATES GOVERNMENT PRINTING OFFICE...radioactive deposits-__--______________-____---___----_--Morro do Ferro___________________________________________ |  | Miekeley, N., Coutinho de Jesus, H., Porto da Silveira, C.L., Degueldre, C. (1992) Chemical and physical characterization of suspended particles and colloids in waters from the Osamu Utsumi mine and Morro do Ferro analogue study sites, Poços de Caldas, Brazil. Journal of Geochemical Exploration, 45 (1) 409-437 doi:10.1016/0375-6742(92)90133-s | Journal (article/letter/editorial) | | Osamu Utsumi mine and Morro do Ferro analogue study sites, Pogos de Caldas, Brazil N. M i e k e l e y a...a, H . C o u t i n h o de Jesus% C.L. P o r t o d a S i l v e i r a ~ a n d C. D e g u e l d r e b "Department...Pontifical Catholic University, 22453, Rio de Janeiro, Brazil bPaul Scherrer Institute, CH-5232 Villigen...revision 7 May 1992) ABSTRACT Miekeley, N., Coutinho de Jesus, H,, Porto da Silveira, C.L. and Degueldre...Osamu Utsumi mine and Morro do Ferro analogue study sites, Poqos de Caldas, Brazil. In: N.A. Chapman, I |  | | Journal (article/letter/editorial) | | intrusives, uranium ore bodies and the Morro do Ferro, Brazil, thorium mineralization. The aims of the...deposits (Morro do Ferro) Another example of geochemical analogues is that of Morro do Ferro thorium deposit...the P o l o s de Caldas plateau in the state of Minas Gerais, Brazil. The Poqos de Caldas plateau is believed...believed to be deeply eroded caldera and the Morro do Ferro deposit itself is near the centre of the plateau...the surface of clay and oxide minerals. The Morro do Ferro deposit has been studied by Eisenbud and coworkers |  | Degueldre, Claude, Triay, Iñes, Kim, Jae-Il, Vilks, Peter, Laaksoharju, Marcus, Miekeley, Norbert (2000) Groundwater colloid properties: a global approach. Applied Geochemistry, 15 (7) 1043-1051 doi:10.1016/s0883-2927(99)00102-x | Journal (article/letter/editorial) | | Villigen-PSI, Switzerland Centre des Sciences Naturelles de l'Environnement, University of Geneva, Switzerland...Ponti®cal Catholic University, GaÂvea, 22453, Rio de Janeiro, Brazil b Received 2 June 1999; accepted 16 September...required. The purpose of this study is to discuss and de®ne rules allowing evaluation of colloid properties...zeolite with local gel layers (Levy, 1992). Morro do Ferro, Brazil, is an altered (weathered) formation derived...located in the Poc° os de Caldas alkaline caldera complex in the state of Minas Gerais. The rocks were predominantly |  | | Journal (article/letter/editorial) | | water samples collected from two mine sites in Brazil. Aqueous speciation of acid mine waters is a dif...shifted down from the initial p H line). The p H values do not agree Downloaded by [Acadia University] at...mine and the Morro do Ferro thorium and rare-earth-element deposit near Pogos de Caldas, Brazil (Chapman...Balance Results for Three Wells near Pocos de Caldas, Brazil, mmol/kgH2O1 Mineral MF12 PC-GW-42 Fluorite...by [Acadia University] at 14:10 30 May 2013 Kaolinite Chalcedony Fl - 0.0007 - 0.0009 -0.377 |  | | Journal (article/letter/editorial) | | Crrrronl FnoNoBr- CeOz, FROM AND URSULA POQOS DE CALDAS, BRAZIL B. lVlenvrw, Haraard Llniversity, ond'...secondarymineral from Nlorro do Ferro on the Pogosde Caldasplateau, Minas Gerais,Brazil. The cerianite occursin...radioactive zo:neon the southeasternslope of l\forro do Ferro. Samplesof these materials were collectedin July...a and kaolinite are admixed, and the massesare cut by tiny veinletsof limonite. Morro do Ferro is a hill...samplefrom which most of the admixed hydromica and kaolinite had been removed by separation in methylene iodide |  | | Journal (article/letter/editorial) | | within six natural analogue studies: Pocß os de Caldas, Cigar Lake, Maqarin, El Berrocal, Oklo and Palmottu...undertaken in the following systems: Pocß os de Caldas (Brazil), a Mesozoic volcanic ring-structure hosting...methodology of the BPM exercises, from the Pocß os de Caldas to the Oklo and Palmottu projects, has not varied...included in this revision: Pocßos de Caldas: SKB (Sweden), KTH (Sweden), PSI (Switzerland)...model the U/Fe association was done in Pocß os de Caldas by assuming the coprecipitation of U3O8 with Fe(OH)3 |  | Bruno, J, Duro, L, de Pablo, J, Casas, I, Ayora, C, Delgado, J, Gimeno, M.J, Peña, J, Linklater, C, Pérez del Villar, L, Gómez, P (1998) Estimation of the concentrations of trace metals in natural systems. Chemical Geology, 151 (1) 277-291 doi:10.1016/s0009-2541(98)00085-0 | Journal (article/letter/editorial) | | Berrocal žSpain / and Poços de Caldas žBrazil / J. Bruno a,) , L. Duro a , J. de Pablo b, I. Casas b, C....Barcelona, Spain ETSEIB, UniÕersitat Politecnica de Catalunya, AÕda. Diagonal 647, 08028 Barcelona, Spain...Franques, ` 08028-Barcelona, Spain Ciemat, Centro de InÕestigaciones Energeticas, Medioambientales y Tecnologicas...methodology to the El Berrocal ŽSpain. and Poços de Caldas ŽBrazil. sites. Trace metals under investigation...oxyhydroxides Žboth in El Berrocal and in Poços de Caldas., Ž2. the interaction of barium and manganese |  | Fernandes, Alexandre Martins, Conceição, Fabiano Tomazini da, Spatti Junior, Eder Paulo, Sardinha, Diego de Souza, Mortatti, Jeferson (2016) Chemical weathering rates and atmospheric/soil CO2 consumption of igneous and metamorphic rocks under tropical climate in southeastern Brazil. Chemical Geology, 443. 54-66 doi:10.1016/j.chemgeo.2016.09.008 | Journal (article/letter/editorial) | | metamorphic rocks under tropical climate in southeastern Brazil Alexandre Martins Fernandes, Fabiano Tomazini da...da Conceição, Eder Paulo Spatti Junior, Diego de Souza Sardinha, Jeferson Mortatti PII: DOI: Reference:...Conceição, Fabiano Tomazini, Spatti Junior, Eder Paulo, de Souza Sardinha, Diego, Mortatti, Jeferson, Chemical...metamorphic rocks under tropical climate in southeastern Brazil, Chemical Geology (2016), doi: 10.1016/j.chemgeo...tropical climate in southeastern SC RI P T Brazil NU Alexandre Martins Fernandes1, Fabiano Tomazini |  | | Journal (article/letter/editorial) | | measured in groundwaters from the Pocos de Caldas complex in Brazil. INTRODUCI’ION During the past years...groundwaters from Osamu Utsumi uranium mine and Morro do Ferro thorium/rare earth deposit. The groundwaters...in twenty water samples from the Poqos de Caldas complex (Brazil), The saturation indexes were calculated...different locations of the Osamu Utsumi and Morro do Ferro deposits (NORDSTROMet al., 1991a). We have...) Testing of geochemical models in the Pocos de Caldas analogue study. .I. Geochem. Expl. (submitted) |  | | Journal (article/letter/editorial) | | and by alkaline volcanic rock in the Poços de Caldas, Brazil. One rare study of a granite-hosted uranium...orebodies are marked by the production of illite, kaolinite, chlorite, pyrite, fine-grained quartz, hematite...fractions consist of 50 to 65% illite, 20 to 30% kaolinite and about 10% montmorillonite In general, the... Testing of geochemical models in the Poços de Caldas analogue study. Nagra Tech. Rep., NTB 90-29rSKB..., Shea, M.E., Smellie, J.A.T., 1992a. The Poços De Laldas Project: natural analogues of processes in |  | | Journal (article/letter/editorial) | | preferential sorption onto Fe oxides (Koeppenkastrop and De Carlo, 1993; White, 2000) as well as clay minerals...and grey clayey soils contain K-feldspar and a kaolinite-rich clay size fraction ( < 2 Am) that makes up...and orange clayey soil that contains quartz, kaolinite, hematite and calcite, and is located 0.3 m above...largely of calcite cement with included quartz and kaolinite. These carbonate nodules show preferential retention...(2003) 239–255 quartz, halite, feldspar, mica, kaolinite and minor amounts of calcite. The basal green |  | | Journal (article/letter/editorial) | | Madeira Sn-Nb-Ta world-class deposit (Pitinga, Brazil) Ingrid.W. Hadlich, Artur C. Bastos Neto, Nilson...Madeira Sn-Nb-Ta world-class deposit (Pitinga, Brazil), Ore Geology Reviews (2019), doi: https://doi...Madeira Sn-Nb-Ta world-class deposit (Pitinga, Brazil). Ingrid. W. HADLICH1, Artur C. BASTOS NETO2, Nilson...Programa de Pós-graduação em Geociências, Instituto de Geociências, Universidade Federal do Rio Grande...Grande do Sul. Avenida Bento Gonçalves 9500, Porto Alegre, 91501-970, RS, Brazil. ingrid.hadlich@ufrgs.br |  | | Report (chapter) | | K-feldspar (K); laumontite (Ca); chlorite (Mg); kaolinite (A1); calcite (HCO3). basins (Hutcheon et al....may be seen that groundwaters in basic rock types do not have intrinsically lower redox states as compared...reflection of different mineral buffers of pH (illite, kaolinite and chlorite in sedimentary basins, e.g. Coudrain-Ribstein...but are sparingly soluble (< 10-6 M at 25~ and thus do not contribute significantly to salinity. Carbonates...explicitly in this model, but kinetic parameters do not appear in Eq. (14) because these rates determine |  | | Journal (article/letter/editorial) | | the course of this study. Alain Castillo, Philippe de Parceval, Jean-Claude Harrichoury, Carole Causserand...Prieto P., Causserand C. and Oelkers E. H. (2005) How do mineral coatings affect dissolution rates? An experimental...Köhler J. S., Bosbach D. and Oelkers E. H. (2005b) Do clay minerals dissolution rates reach equilibrium...(1995) Estudio mineralógico de las variscitas y turquesas silúricas de Punta Corveiro (Pontevedra, España)...mine and the Morro do Ferro analogue study sites, Pocßos de Caldas, Minas Gerais, Brazil. J. Geochem. |  | | Journal (article/letter/editorial) | | nappes d’eau souterraines ont été échantillonnés près de deux gisements du sulfures massifs intacts, Halfmile...le camp minier de Bathurst, au Nouveau-Brunswick, Canada. Dans la plupart des cas, de tels sédiments...Les oxyhydroxides de fer sont probablement présents sous forme de recouvrements de surface, en partie...suspension prélevés des trous de forage qui croisent le gisement de Restigouche près de son expression à la surface...surtout des sulfates, de Fe, Pb, et de Zn, ainsi que des particules de sulfure de fer. En général, ces |  | | Journal (issue) | | (049)-5132-836716 e-mail: envgeo@freenet.de Anne Marie De Grosbois for submittal of items for: Views and news...York Skougstad MW, Fishman MJ, Friedman LC, Erdmann DE, Duncan SS (1979) Methods for determination of inorganic...in both creeks were dependent on the water pH and de- Department of Geology and Geophysics University...Interscience, New York Fiszman M, Pfeiffer WC, Drude de Lacerda L (1984) Comparison of methods used for extraction...Sepetiba Bay, Environ Technol Lett Galan sedi- RJ (Brazil). 5:567-575 E, Gomez-Ariza JL, Gonzalez 1, |  | | Report (issue) | | (Australia) Pervomayskoye (Ukraine), Lagoa Real (Brazil), Valhalla (Australia) Pribram , Jachymov (Czech...(and other) rocks and commonly contain deposits that do not fit into other types, and have origins that are...examples of this deposit type are Lagoa Real in Brazil, Zheltye Vody deposit in Ukraine and Valhalla in...fertilizers by several countries and most countries do not report U from phosphorite as a resource. (8)...of Th include Australia, USA, Turkey, India and Brazil, although most countries have not been diligent |  | | Journal (article/letter/editorial) | | distribution in fine-grained rocks: the Albian kaolinite-rich deposits of the Oliete Basin (NE Spain) José...Alfonso Yuste Oliete3 Departamento de Ciencias de la Tierra, Universidad de Zaragoza, Pedro Cerbuna 12, 50...the distribution of major and trace elements in kaolinite-rich rocks; to infer the role played by accessory...different proportions of quartz and clay minerals (kaolinite and illite) with minor feldspar. Micron accessory...development of relatively cation-poor clays such as kaolinite, and claystones with large rare-earth elements |  | | Journal (article/letter/editorial) | | changes in dissolved REE concentration at F3, nor do they help to explain the systematic variation in...prepared FeOOH. In a similar study, Koeppenkastrop and De Carlo (1992) reported Kd values of 105 to 106 for...goethite at pH 7.9. Although the Koeppenskastrop and De Carlo (1992) study showed a trend of decreasing Kd...noted in similar experiments conducted at lower pH (De Carlo et al., 1998). This difference in sorption...adsorption of cadmium (II) and cobalt (II) on kaolinite. J. Colloid Interface Sci. 204, 93–103. Åström |  | Stille, P., Pierret, M.-C., Steinmann, M., Chabaux, F., Boutin, R., Aubert, D., Pourcelot, L., Morvan, G. (2009) Impact of atmospheric deposition, biogeochemical cycling and water–mineral interaction on REE fractionation in acidic surface soils and soil water (the Strengbach case) Chemical Geology, 264 (1) 173-186 doi:10.1016/j.chemgeo.2009.03.005 | Journal (article/letter/editorial) | | G. Morvan a a LHyGeS-UMR7517, EOST, Université de Strasbourg, INSU/CNRS, 1 rue Blessig, F-67084 Strasbourg...Chrono-environnement, Université de Franche-Comté, F-25030 Besançon, France c Centre de Formation et de Recherche sur l'Environnement...5110, Université de Perpignan, 52 Avenue Paul Alduy, 66860 Perpignan, France d Institut de Radioprotection...Radioprotection et de Sûreté Nucléaire, Cadarache, F-13108 St. Paul Lez Durance, France b a r t i c l e i n f o...author. ULP, CNRS, Laboratoire d'Hydrologie et de Géochimie de Strasbourg, 1 rue Blessig, F-67084 Strasbourg |  | | Journal (article/letter/editorial) | | especially in seawater ( KLINKHAMMER et al., 1983; DE BAAR et al., 1988), but the lengthy preparation and...REEs have been given by FLEET(1984) BROOKINS(1988), DE BAAR et al. ( 1988), and ELDERFIELDet al. (1990)...HREE-carbonate complexes ( KLINKHAMMERet al., 1983; DE BAARet al., 1988). Open ocean waters tend to have...due to dissolution of Ce under reducing conditions (DE BAAR et al., 1988). Negative Ce anomalies also appear...to the Ce/Ce* parameter (here Ce/Ce* = 2(Ce/ kaolinite and chlorite). REEs in the metasediment-derived |  | | Journal (article/letter/editorial) | | GOYAZITE GORCEIXIIE = FLORENCIIE MONAZIIE m: KAOLINITE MONTMORILLONITE 70 t o CALCITE, DOLOMITE 130...carbonatite at Mt Weld, Western Australia Finland, Brazil, Guyana, Kenya, Tanzania, Zaire and Uganda (McNeil...carbonatite in Canada and from carbonatite laterites in Brazil. Long-term, deep weathering processes of the carbonatite...horizon at Mt Weld, where there is carbonate present, do pyrochlores possess elevated CaO, SrO and Na20 contents...cerium, lanthanum and neodymium in the Morro do Ferro Basin, Brazil. Chem Geol 55:313322 McFarlane M J (1976) |  | | Book (edition) | | Salinas, Peru, H Variscite, xx 5 mm, Iturnbiara, Brazil, H Rhodocbrosite, polished, 50 mm, Capillitas,... China, H Page 1: MuscO\ite. 45 mm, Linopolis, Brazil, H Page 2: Vivianite, I 00 mm, Huanzala, Bolivia...Ethiopia, G Page 12: Brazilianite, 35 mm, Linopolis, Brazil, H Page 13: Gold, 35 mm.Eagle's est Mine, California..."Dana's System of Mineralogy•· ( 1944, I 951, 1962). de Fourestier (1999) and Strunz and Nickel (2001). Mi11eral...ASG -Archives de Science Geneve BM - Bulletin de la Societe fram;aise de mineralogie et de cristallographie |
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