 | | Report (issue) | | BR-76 MINISTERIO DAS MIMAS E ENERGIA COMPANHIA DE PESQUISA DE RECURSOS MINERAIS UNITED STATES DEPARTMENT...REPORT Brazil Investigations (IR)BR-76 NIOBIUM (COLUMBIUM) AND TANTALUM RESOURCES OF BRAZIL U. S. Geological... NIOBIUM (COLUMBIUM) AND TANTALUM RESOURCES OF BRAZIL By Max G. White U.S. Geological Survey CONTENTS...Distribution of alkalic intrusives in Southern Brazil .. 16 Alkalic intrusions in the western side of...geologic setting of deposits .............. 24 Minas Gerais ...................................... 24 Bahia |  | Walter, A.-V., Nahon, D., Flicoteaux, R., Girard, J.P., Melfi, A. (1995) Behaviour of major and trace elements and fractionation of REE under tropical weathering of a typical apatite-rich carbonatite from Brazil. Earth and Planetary Science Letters, 136 (3) 591-602 doi:10.1016/0012-821x(95)00195-i | Journal (article/letter/editorial) | | weathering of a typical apatite-rich carbonatite from Brazil A.-V. Walter aT*,D. Nahon b, R. Flicoteaux b, J...Marseille Cedex 20. France h Laboratoire de Gt!osciences de I’Enuironnement, URA CNRS 132. Uniuersitt...d’Aix-Marseille III, 13397 Marseille Cedex 20, France ’ Bureau de Recherche Giologique et Mini&es, Dipartement Giochimie...ansCedex 2. France ’ Instituto de Astronomia e Geojisica, Unioersidade de Sad Paula, 4200 aoenida Miguel...Miguel Stefano, CP 30627, 0100 Sac?Paula. Brazil Received 12 December 1994; revised 5 August 1995; accepted |  | | 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 |  | | 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 |  | | Report (volume) | | Ce) Ti Oa - - - - - - - - - (Y, U)(Ti, Zr, Fe, Nb)dO, OH)a -· - - - - - - Cerian ferrian pyrochlore -...Cienc. Anais-Academia Brasileira de Ciencias, Anais. Rio de Janeiro, Brazil. Acad. Cienc. Lisboa, Cl. Sci...Sci. Mem.-Academia das Ciencias de Lisboa. Classe de Sciencias. Memorias. Lisbon, Portugal. Acad. Nat....Polonaise Sci. Bull., Ser. Sci. Geol. et Geog.-Bulletin de l'Academie Polonaise des Sciences, Serie des Sciences...Cl. Sci.-Academie Royale des Sciences de Belgique, Bulletin de Ia Classe des Sciences. Brussels, Belgium |  | | 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) | | Gmelinite-(Na) Goethite Gold native Goldfieldite Gorceixite Goyazite Graphite Gratonite Greenalite Greenockite...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) | | Gmelinite-(Na) Goethite Gold native Goldfieldite Gorceixite Goyazite Graphite Gratonite Greenalite Greenockite...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 | | 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 |  | | 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 (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: |  | | Book | | behaviour but sufficiently significant fractionations do occur, which have proved to be of great importance...ions can occupy six-fold co-ordination sites but do so only rarely in minerals. Normally the co-ordination...Experimental determinations do not suffer from the same associated uncertainties as do those from natural systems...on element distribution. The experiments, however, do not reproduce all the conditions prevailing during...geochimique des gisements d e fluorine bases sur l'etude de la distribution des lanthanides — application au |
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