 | 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) | | 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 |  | 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) | | and by alkaline volcanic rock in the Poços de Caldas, Brazil. One rare study of a granite-hosted uranium...illite, 20 to 30% kaolinite and about 10% montmorillonite In general, the clay-rich fracture-fillings... 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...Shea, M.E., Smellie, J.A.T., 1992b. The Poços De Caldas: an introduction and a summary of its implications |  | | 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 (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, |  | | 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...seawater. Geochim. Cosmochim. Acta 57, 519 –526. De Carlo E. H., Wen X.-Y., and Irving M. (1998) The |  | | Journal (article/letter/editorial) | | GORCEIXIIE = FLORENCIIE MONAZIIE m: KAOLINITE MONTMORILLONITE 70 t o CALCITE, DOLOMITE 130 m n B APATIIE...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) |  | | 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 |  | 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) | | SITE-BINDING REACTIONS ON ADSORPTION OF U(VI) TO MONTMORILLONITE JAMES p, MCKINLEY, JOHN M. ZACHARA, STEVEN...99352 Abstract- Adsorption of uranyl to SWy-1 montmorillonite was evaluated experimentally and results were...solution. Uranyl was contacted with SWy-l montmorillonite in a NaCI0 4 electrolyte solution at three...SiOH sites to uranyl adsorption. Key Words-Montmorillonite, UranyL INTRODUCTION Uranium is a widespread...investigate the adsorption of uranyl to Wyoming montmorillonite SWy-l, a well-studied reference smectite. Smectites |  | | 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 |  | | Report (issue) | | S. Denny______________ 324. Compaction of montmorillonite-rich sediments in western Fresno County, California...Revision of the geology of diamond districts in Bahia, Brazil, by Max G. White and Charles T. Pierson _________...Bahia, Brazil, by D. D. Haynes and J. J,. Matzko_---364. Thorium and rare earths in the Po~tos de Caldas...Caldas zirconium district, Brazil, by Helmuth Wedow, Jr _____________ _ 365. Vegetation-free zone on dry...Eugenio Tavera Amezcua, Jesus Ojeda Rivera, Zoltan de Cserna, and Roger van Vloten-------------------- |  | | Book (edition) | | International Symposium on Carbonatites in Pocos de Caldas, Brazil for which this writer was keynote speaker... 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...Survey and H. S. de Schmid (1912) Figure 12-4 : Canadian Geological Survey and H. S. de Schmid (1912) Figure |  | | Book | | A. F. Corey, M. S. Corey, R. 'l\T. Deane, A. P. De Carvalho, L. F. Dellwig, M. Deul, S. B. Dickinson... . . . . . . . . . . . . . . . . . . . . . . . Brazil . . . . . . . . . . . . . . . . . . . . . . . ......... . ..... . ........ . ................ . Brazil ...... . .... .... ............... .. ....... ...all com.ets are turned from the, sun. I do not knoiv why they do this, whether it is etiquette among thern...oxides, hydroxides, oxygen salts, and silicates. They do not occur naturally as native elements, sul:6des |  | | Book | | present level of exposure. Even when veins 1008 do occur within or in the proximity of a "granite",... because most postmagmatic hydrothermal deposits do occur in the proximity, in the aureole of igneous...Paredes J.) in Bellido and de Montreuil (1972). Abbreviations: CP=Cerro de Pasco; M=Morococha; Ml=Mala...around the Andean Batholith of Peru (Bellido and de Montreuil, 1972; Putzer, 1976; Hollister, 1978) is...major Pb,Zn,Ag replacements and veins (e.g. Cerro de Pasco, Casapalca; Chapter 26), all marked by intensive |  | | Journal (article/letter/editorial) | | Mirabilite Molybdenite Molybdite Monazite Monetite Montmorillonite Montroseite Montroydite Mordenite Mosandrite...orientation of individual veins is often seen, they do not show up in platform sediments far off the uplifted...control on the aerial extension of these veins which do not reach very deep into the host rock underneath...which sometimes are enriched in inorganic compounds do not directly fit in this differentiation scheme and...classification scheme like this, these man-made raw materials do not fit in, even if they are primarily derived from | | | Journal (article/letter/editorial) | | Mirabilite Molybdenite Molybdite Monazite Monetite Montmorillonite Montroseite Montroydite Mordenite Mosandrite...orientation of individual veins is often seen, they do not show up in platform sediments far off the uplifted...control on the aerial extension of these veins which do not reach very deep into the host rock underneath...which sometimes are enriched in inorganic compounds do not directly fit in this differentiation scheme and...classification scheme like this, these man-made raw materials do not fit in, even if they are primarily derived from |  | | Book (edition) | | es: CW DB DE DG DJ DK DM DO DP DS EB EO EE FM GD GG GH GM Arnold Hampson David Baker Ben De Witt William... All faces or other surfaces on a given mineral do not necessarily exhibit the same luster. Some minerals...more references where all references are inadequate, do not contain good bibliographies, or are in conflict...CLASS: 4/mmm SPACE GROUP: P4/ncc; P4/nmm(Pseudo) Ve De LATTICE CONSTANTS: Ga tae 9908 3 STRONGEST DIFFRACTION...in a calcite matrix Mendoza, Argentina. at Cerro de Cacheuta, SELECTED REFERENCE: Deer, Howie, and Zussman | | | Book (edition) | | Tsurneb, Namibia, (lower, right) gold, Amazonas, Brazil All specimens from the collection of Eugene and...figure caption code. Arnold Hampson David Baker Ben De Witt William Larson Carlos Barbosa Cal and Kerith...Mines cw Charles and Marcelle Weber DB Dan Behnke DE Demetrios Pohl DG Richard Graeme DJ D. K. Jones Douglas...Douglas K. Miller DK Arizona-Sonora Desert DM Museum DO = "Donald Olson Delma Perry DP DS David Shannon EB...forth. All faces or other surfaces on a given mineral do not necessarily exhibit the same Juster. Some minerals |  | | Book | | production, reserves, and utilization of met allic mineral de posits throughout the world bas changed materially...they will be referred to collectively as mineral de posits. Since the history of the origin and accumulation...such a manne r that o pe nings favorable for ore de pos iti o n occur (Fig. 2-6) , w he reas incompete...tend to yield plastically or by fl owage and thu s do no t prov ide openings favorable for o re d eposition...of values or occurrence of shoots in metalliferous de posits , Econ . G eology, vol. 3, pp. 143- 145. 34 |  | | Book | | present level of exposure. Even when veins 1008 do occur within or in the proximity of a "granite",... because most postmagmatic hydrothermal deposits do occur in the proximity, in the aureole of igneous...Paredes J.) in Bellido and de Montreuil (1972). Abbreviations: CP=Cerro de Pasco; M=Morococha; Ml=Mala...around the Andean Batholith of Peru (Bellido and de Montreuil, 1972; Putzer, 1976; Hollister, 1978) is...major Pb,Zn,Ag replacements and veins (e.g. Cerro de Pasco, Casapalca; Chapter 26), all marked by intensive |  | | Report (issue) | | fields of competence for other Federal agencies that do not have the required specialized staffs or scientific...Mississippian and probable Devonian 28 age in the Sangre de Cristo Mountains-----28 Geology of parts of Nebraska...Diamond deposits in Bahia, Brazil._______________ 53 Uranium in the Serra de Jacobina, Bahia, Brazil____...minerals are fluorite, opal (/3-cristobalite), montmorillonite, and quartz. The ore is very fine grained and...calcite, barite, pyrite, marcasite, opal, montmorillonite, kaolin, a stilbite-like zeolite, manganese |  | | Report (issue) | | -----------------------------Mineral potential: 1Nhere do 1Ne stand? --------Lo1N-grade ores and the environment...civilization and standard of living? (2) how much of it do we have and to what extent is it economically and...our supply of any minerals unlimited? Of which ones do we have very little, or are we likely to run out...question to which the volume is directed : Where do we stand with regard to resources of each commodity...research along many lines. MINERAL POTENTIAL: WHERE DO WE STAND? Each chapter of the volume has its own |  | | Book (edition) | | etc. All faces or other surfaces on a given mineral do not necessarily exhibit the sa1ne luster. Mode of...references where all references are inadequate or do not contajn good bibliographies or are in conflict...text. Our procedure was changed, in part, because we do not want to represent this book as the best reference...another matter: I do not quite know how my love for the microscope began, but I do know about the 1ninerals...intergrown with clausthalite in a calcite matrix at Cerro de Cacheu ta, Mendoza, Argentina. BEST REF. IN ENGLISH: |
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