 | | Journal (article/letter/editorial) | | ANALOGUE STUDIES: GEOLOGY AND MINERALOGY OF MORRO DO FERRO, BRAZIL P.M.C. B A R R E T T O a n d K. F U J I...Brazilian Nuclear Energy Commission (CNEN), Rio de Janeiro (Brazil) (Accepted for publication January 15, 1986)...analogue studies: Geology and mineralogy of Morro do Ferro, Brazil. In: N.A. Chapman and J.A.T. Smellie (Guest-Editors)...understanding of the Th- and REE-rich orebody at Morro do Ferro as a possible natural analogue for a radioactive...long period of time. The Morro do Ferro in the State of Minas Gerais, Brazil, could be a suitable analogue |  | | 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___________________________________________ |  | | Report (volume) | | The Morro do Ferro Thorium and Rare-Earth Ore Deposit, Pocos de Caldas District, Brazil GEOLOGICAL SURVEY...the Commissao Nacional de Energia Nuclear, Brazil 1185-D The Morro do Ferro Thorium and Rare-Earth...Deposit, Po9os de Caldas District, Brazil By HELMUTH WEDOW, JR. URANIUM INVESTIGATIONS IN BRAZIL GEOLOGICAL...cooperation with the Commissao Nacional de Energia Nuclear, Brazil UNITED STATES GOVERNMENT PRINTING OFFICE...location of the Po§os de Caldas district. 2. Sketch map of the Po§os de Caldas district, showing principal |  | Gomes, Celso de Barros, Azzone, Rogério Guitarrari, Rojas, Gaston Eduardo Enrich, Guarino, Vincenza, Ruberti, Excelso (2021) Agpaitic Alkaline Rocks in Southern Brazilian Platform: A Review. Minerals, 11 (9) 934 doi:10.3390/min11090934 | Journal (article/letter/editorial) | | Rocks in Southern Brazilian Platform: A Review Celso de Barros Gomes 1, *, Rogério Guitarrari Azzone 1 ,... University of São Paulo, São Paulo 05508-080, Brazil; rgazzone@usp.br (R.G.A.); gastonenrich@usp.br...occurrences located in southern Brazil and at the border between Brazil and Paraguay. All the Brazilian...Triassic. The most significant occurrence is Poços de Caldas, the largest alkaline massif in South America...and rinkite, rather than simple minerals such as zircon and ilmenite [1,2]. This term was first proposed |  | | Journal (article/letter/editorial) | | Sulfide Deposits from the Morro do Ferro Greenstone Belt, Southeastern Brazil A. Choudhuri , S. S. Iyer...Sulfide Deposits from the Morro do Ferro Greenstone Belt, Southeastern Brazil, International Geology Review...Deposits from the Morro do Ferro Greenstone Belt, Southeastern Brazil1 A. CHOUDHURI, Instituto de Geociencias...Universidade Estadual de Campinas, Caixa Postal 6152, 13081-970 Campinas, Brazil S. S. IYER, AND H. R...June 2016 Abstract In the Morro do Ferro greenstone belt in southeastern Brazil, Ni-Cu massive sulfides |  | | Journal (article/letter/editorial) | | FORTALEZA DE MINAS DEPOSIT, BRAZIL: EVIDENCE OF HYDROTHERMAL REMOBILIZATION Carolina Michelin de ALMEIDA...Ontario K7L 3N6, Canada Sebastião Gomes de CARVALHO Departamento de Petrologia e Metalogenia, Universidade...Rio Claro, São Paulo, 13506-900, Brazil Abstract The Fortaleza de Minas Ni–Cu–PGE sulfide deposit is hosted...hosted by Archean komatiitic rocks of the Morro do Ferro greenstone belt, near the southwestern margin...margin of the São Francisco craton, Minas Gerais state, Brazil. The deposit contains 6 million tonnes of ore |  | | Journal (article/letter/editorial) | | the Campos Gerais Domain — A reworked margin of the São Francisco paleocontinent (SE Brazil): Constraints...Geological Survey of Brazil – CPRM, Av Brazil 1731, Belo Horizonte 30140-002, Brazil Department of Mineral...orogeny a b s t r a c t The Campos Gerais Domain (CGD) in southeastern Brazil is an approximately 180 km ...metavolcano-sedimentary rocks of the Fortaleza de Minas and Alpinópolis segments represent a Mesoarchean...diorite (TTG) gneisses and migmatites. U-Pb SHRIMP zircon data from a subalkaline metagabbro yielded a concordia |  | | 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 |  | | Journal (article/letter/editorial) | | of Mining, UFOP, CAMPUS Morro do Cruzeiro, 35400-000 Ouro Preto, MG, Brazil. E-mail: aecperes@dedalus...Espirito Santo, 35 30160-030 Belo Horizonte, MG, Brazil (Received 17 April 1997; accepted 25 July 1997)...complex mineralogy, such as that of Pitinga, AM, Brazil, with estimated reserves of 146,960 t of rare-earths...economical importance, such as: columbite-tantalite, zircon, cryolite and xenotime, the objective of the present...possibility for the selective separation of xenotime and zircon (the major associated mineral) is flotation. Microflotation |  | | 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 |  | | Report (chapter) | | Tectonic evolution of the Brasília Belt, Central Brazil, and early assembly of Gondwana C. M. Valeriano...Tectonic evolution of the Brası́lia Belt, Central Brazil, and early assembly of Gondwana C. M. VALERIANO1... J. TROUW3,4 1 Universidade do Estado do Rio de Janeiro, Faculdade de Geologia, Rua São Francisco Xavier...20559-900, Rio de Janeiro, RJ, Brazil (e-mail: claudio.valeriano@pq.cnpq.br) 2 Universidade de Brası́lia...Brası́lia, Instituto de Geociências, Instituto de Geociências—Universidade de Brası́lia Campus Universitário |  | | Book | | Yociteru Hasui, Fernando F. M. de Almeida, Andrea Bartorelli 50 ANOS DE GEOLOGIA Yociteru Hasui I CONCEITOS...TEMPO PROFUNDO Celso Dal Ré Carneiro, Fernando F. M. de Almeida,Pedro Wagner Gonçalves, Alexandre Uhlein...Yociteru Hasui II TECTÔNICA DE PLACAS E EVOLUÇÃO DOS CONTINENTES 5 - TECTÔNICA DE PLACAS Yociteru Hasui 6...CONSTITUIÇÃO E EVOLUÇÃO 7 - COMPARTIMENTAÇÃO GEOLÓGICA DO BRASIL Yociteru Hasui 8 - QUADRO GERAL DA EVOLUÇÃO...BRASIL-ÁFRICA Yociteru Hasui 9 - ESTÁGIOS EVOLUTIVOS DO BRASIL NO FANEROZOICO Celso Dal Ré Carneiro, Fernando |  | | Report (issue) | | PLURINATIONAL STATE OF BOSNIA AND HERZEGOVINA BOTSWANA BRAZIL BRUNEI DARUSSALAM BULGARIA BURKINA FASO BURUNDI...remain the responsibility of the contributors and do not necessarily represent the views of the IAEA or....................................... 38 6.4.3. Brazil..................................................most frequent concentrations of thorium in monazite do not exceed 10%. Other common minerals, however lower...lower in thorium content, are xenotime and zircon. A tentative classification of thorium minerals by chemical |  | Ferreira, Raianny Carolini Ramos, Pinheiro, Marco Aurélio Piacentini, Magalhães, Joana Reis, Novo, Tiago Amâncio, Schorscher, Johann Hans Daniel, Queiroga, Gláucia (2020) Physical volcanology and petrogenesis of the Archean Quebra Osso komatiite flow field, Rio das Velhas greenstone belt, Quadrilátero Ferrífero (Brazil). Lithos, 370. 105626pp. doi:10.1016/j.lithos.2020.105626 | Journal (article/letter/editorial) | | Velhas Greenstone Belt, Quadrilátero Ferrífero (Brazil) Raianny Carolini Ramos Ferreira, Marco Aurélio...Velhas Greenstone Belt, Quadrilátero Ferrífero (Brazil), LITHOS (2020), https://doi.org/ 10.1016/j.lithos...Velhas Greenstone Belt, Quadrilátero Ferrífero (Brazil) Raianny Carolini Ramos Ferreiraa,b,* raianny.ferreira@cprm...aGeological Survey of Brazil, Av. Brasil 1731, CEP 30140-002, Belo Horizonte, MG, Brazil f de Pesquisa Manoel...Costa, Instituto de Geociências, Universidade oo bCentro Federal de Minas Gerais (CPMTC-IGC-UFMG) |  | 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) | | 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 |  | | Journal (article/letter/editorial) | | protocontinent in the south São Francisco craton, Brazil Mariana Brando Soares, Atlas Vasconcelos Corrêa...protocontinent in the south São Francisco craton, Brazil, Gondwana Research(2019), https://doi.org/10.1016/j...protocontinent in the south São Francisco craton, Brazil Mariana Brando Soares1, Atlas Vasconcelos Corrêa...Programa de Pós-Graduação em Geologia (PPGL), Instituto de Geociências, Universidade Federal do Rio de Janeiro...Janeiro, Brazil. 2 - Departamento de Geologia, Instituto de Geociências, Universidade Federal do Rio de Janeiro |  | | Journal (article/letter/editorial) | | and by alkaline volcanic rock in the Poços de Caldas, Brazil. One rare study of a granite-hosted uranium...granite and uraniferous accessory minerals such as zircon, sphene, allanite and apatite, which commonly occur... 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 |  | Torró, L., Villanova, C., Castillo, M., Campeny, M., Gonçalves, A. O., Melgarejo, J. C. (2012) Niobium and rare earth minerals from the Virulundo carbonatite, Namibe, Angola. Mineralogical Magazine, 76 (2) 393-409 doi:10.1180/minmag.2012.076.2.08 | Journal (article/letter/editorial) | | * Departament de Cristal·lografia, Mineralogı́a i Dipòsits Minerals, Universitat de Barcelona, c/Martı́...Departamento de Geologia, Faculdade de Ciências, Universidade Agostinho Neto, Av. 4 de Fevereiro 7,...distribution of carbonatites and kimberlites. Modified after de Carvalho et al. (2000). 394 NIOBIUM AND RARE EARTH...magnetite are common accessory minerals; phlogopite and zircon are less common. Apatite occurs as euhedral millimetresized...dolomite, quartz, strontianite and fluorite which do not exceed a few millimetres in size. Fluorite occurs |  | Andersen, Allen K., Clark, James G., Larson, Peter B., Donovan, John J. (2017) REE fractionation, mineral speciation, and supergene enrichment of the Bear Lodge carbonatites, Wyoming, USA. Ore Geology Reviews, 89. 780-807 doi:10.1016/j.oregeorev.2017.06.025 | Journal (article/letter/editorial) | | lateritically weathered carbonatite at Araxá and Catalão I, Brazil and Mt. Weld, Australia (cf., Zaitsev et al., 1998;...Juquiá, Brazil; Bayan Obo, China; Karonge, Burundi; and the Barra do Itapirapuã carbonatite, Brazil, among...crystals are smaller, lack the clear hexagonal form, and do not experience degradation due to dehydration during...leaching during alteration and ion exchange processes do not typically affect the ratio of B-site cations...laterites, including Araxá, Catalão I, and Morro do Ferro, Brazil; Mt. Weld, Australia; and Tomtor, Russia |  | | Journal (article/letter/editorial) | | preferential sorption onto Fe oxides (Koeppenkastrop and De Carlo, 1993; White, 2000) as well as clay minerals...biotite (10%) and accessory grains of apatite, zircon and hornblende. Microcrystalline quartz is a common...muscovite and vermiculite. Accessory grains of apatite, zircon and hornblende are present and appear unaltered...accessory (0.5 wt.%) REE-rich apatite (Fig. 4). Zircon grains were too small for laser ablation analysis...metal oxides more so than HREE (Koeppenkastrop and De Carlo, 1993). In addition, synthetic ferrihydrite |  | Mott, A. V., Bird, D. K., Grove, M., Rose, N., Bernstein, S., Mackay, H., Krebs, J. (2013) KARRAT ISFJORD: A NEWLY DISCOVERED PALEOPROTEROZOIC CARBONATITE-SOURCED REE DEPOSIT, CENTRAL WEST GREENLAND. Economic Geology, 108 (6) 1471-1488 doi:10.2113/econgeo.108.6.1471 | Journal (article/letter/editorial) | | complex in the Disko Bugt region (Fig. 1) yielded a zircon Pb-Pb age that indicated a minimum crystallization...basement at 2835 ± 4 Ma (Nutman and Kalsbeek, 1999). A zircon provenance study of Cretaceous to Paleocene sandstones...detritus (Scherstén and Sønderholm, 2007). Measured zircon ages range between 3200 and 2400 Ma with a dominant...(Scherstén and Sønderholm, 2007). Another detrital zircon study in the northern Disko Bugt and Uummannaq...Method Source Greenland: Disko Bugt, >3000, 3650 Zircon Orthogneiss from crystalline Uummannaq basement |  | | Report (issue) | | PLURINATIONAL STATE OF BOSNIA AND HERZEGOVINA BOTSWANA BRAZIL BRUNEI DARUSSALAM BULGARIA BURKINA FASO BURUNDI...particular the contributions of the late R. Villas-Boas (Brazil). The IAEA officers responsible for this publication...remain the responsibility of the contributors and do not necessarily represent the views of the IAEA or.............................................. 39 BRAZIL .................................................Gondwana supercontinent and which are now found in the Brazil Shield, southern and eastern Africa, Madagascar |  | | Book | | Alkmim Editors São Francisco Craton, Eastern Brazil Tectonic Genealogy of a Miniature Continent Regional...editors Roland Oberhänsli, Potsdam, Germany Maarten J. de Wit, Port Elizabeth, South Africa François M. Roure...Alkmim • Editors São Francisco Craton, Eastern Brazil Tectonic Genealogy of a Miniature Continent 123...Universidade do Estado do Rio de Janeiro Maracanã, Rio de Janeiro Brazil Fernando F. Alkmim Escola de Minas...Federal de Ouro Preto Ouro Preto Brazil Umberto G. Cordani Universidade de São Paulo São Paulo Brazil ISSN |
|
