 | | Journal (article/letter/editorial) | | minerals Case Report Heavy Mineral Sands in Brazil: Deposits, Characteristics, and Extraction Potential...Cidade Universitária, Rio de Janeiro 21941-908, Brazil; carolinec.gon@gmail.com * Correspondence: pbraga@cetem...March 2019; Published: 13 March 2019 Abstract: In Brazil, heavy mineral sand deposits are still barely exploited...coastal region were chosen, in Piaui state and in Bahia Provinces. In all samples, the heavy minerals of...while the figure for the Bahia sample was 3.4% THM. The recovery test of the Bahia sample, using only physical |  | | Journal (article/letter/editorial) | | Umarizal Igneous Association, Borborema Province, NE Brazil: Implications for the Genesis of A-Type Granites...Universidade de SZo Paulo, 05508-900 SZo Paulo Sr? Brazil, E-mail: ianmcrQusp.br Departamento de Geologia...Natal RN,Brazil Centro de Geocigncias, Universidade Federal do Para’, 66075-900 Bele‘m PA, Brazil * Corresponding... Abstract The Umarizal igneous association (NE Brazil) consists of three A-type plutons, intruded over...Crystallization of the Umarizal sill, formed of fayalite quartz syenite and sycnogranite, and of the Lagoa stocks |  | | Journal (article/letter/editorial) | | In Memoriam Carlos do Prado Barbosa Downloaded by [UQ Library] at 08:35 05 November 2014 (1 91 7-2003)...the Jonas mine, Itatiaia district, Minas Gerais, Brazil (1993). T Brazilian mineral specimens. He did...the famous Brumado mine, Bahia State, helping to prevent countless uvites, quartz Japan-law twins, hematites...led to many significant discoveries. Anywhere in Brazil where something interesting was to be found, Carlos...Carlos do Prado Barbosa was born on 7 January I91 7 in Alfenas. in the state of Minas Gerais, Brazil. In I939 |  | | Journal (article/letter/editorial) | | Reviews—Hartt's Geology of Brazil. BBVIEWS. I.—SCIENTIFIC RESULTS OF A JOURNEY IN BRAZIL. By Louis AOASSIZ,...travelling companions. GEOLOGY AND PHYSICAL GEOGRAPHY OF BRAZIL. By CHAS. FRED. HARTT, Professor of Geology in...sketch of the -Geology and Physical Geography of Brazil, will be agreeably disappointed; for the six hundred...Professor Hartt was not content with his gleanings in Brazil, made during the brief period occupied by the "...Physical Geography of the coast between Eio and Bahia, going over a very large part of the ground on horseback |  | | Journal (article/letter/editorial) | | Washington Franca Rocha 2 Federal University of Bahia; simonecruzufba@gmail.com State University of Feira...34445511 1 2 Abstract: The large iron ore reserves of Brazil are already known, but there are still few studies...prospecting, using two deposits in the state of Bahia, Brazil, as case studies. To validate image processing...Sentinel-2; reflectance spectroscopy. 1. Introduction Brazil holds 13% of the world's iron ore reserves, placing...(BRASIL, 2016). The largest iron ore reserves in Brazil are in the Quadrilátero Ferrífero (Minas Gerais) |  | | Journal (article/letter/editorial) | | A. CARLOS DO PRADO BARBOSA Praca N.S. da Glorida i35-2o7, Rio de Janeiro 2oooo, Brazil AND RICHARD V...south central Bahia state, Brazil. It occurs as water-worn pebbles ('favas') with quartz, andalusite,...ores in the Paramirim region, south central Bahia state, Brazil, near the village of Paramirim das Crioulas...found in the placers with the bahianite include quartz, andalusite of the bright green gem variety (viridine)...seldom pure, but commonly contain inclusions of quartz. They are polycrystalline and often show radial-fibrous |  | | Journal (article/letter/editorial) | | integrated model for the Neoarchean Carajás IOCG System, Brazil Maria Emilia Schutesky, Claudinei Gouveia de Oliveira...integrated model for the Neoarchean Carajás IOCG System, Brazil, Ore Geology Reviews (2020), doi: https://doi.org/10...integrated model for the Neoarchean Carajás IOCG System, Brazil Maria Emilia Schutesky & Claudinei Gouveia de Oliveira...Universidade de Brasília, Brazil The Carajás Mineral Province, located in northern Brazil, comprises the oldest...polymetallic ooids in the Alemão orebody (Igarapé-Bahia deposit), hosting identical hydrothermal alteration |  | Crósta, A.P., Reimold, W.U., Vasconcelos, M.A.R., Hauser, N., Oliveira, G.J.G., Maziviero, M.V., Góes, A.M. (2019) Impact cratering: The South American record—Part 2. Geochemistry, 79 (2) 191-220 doi:10.1016/j.chemer.2018.09.002 | Journal (article/letter/editorial) | | State University of Campinas, Brazil University of Brasília, Brazil Natural History Museum—Leibniz Institute...Germany d Federal University of Bahia, Brazil e University of São Paulo, Brazil b c ARTICLE INFO ABSTRACT...comprehensive description of the Brazilian impact record. Brazil encompasses most of the tectonically stable cratonic...Universitária ‘Zeferino Vaz’, Campinas, SP, CEP 13083-855, Brazil. E-mail address: alvaro@ige.unicamp.br (A.P. Crósta)...zircon to silica + ZrO2, as well as rare shocked quartz grains. Such glass also carries elevated abundances |  | Prado, Renato L., Espin Fenoll, Isabel C., Ullah, Irfan, Miura, Gianna C. Maciel, Crósta, Alvaro P., Zanon dos Santos, Roberto P., Reimold, Wolf Uwe, Elis, Vagner R., Imbernon, Erico, Riccomini, Claudio, Diogo, Liliana Alcazar (2019) Geophysical investigation of the Colônia structure, Brazil. Meteoritics & Planetary Science, 54 (10) 2357-2372 doi:10.1111/maps.13292 | Journal (article/letter/editorial) | | investigation of the Col^onia structure, Brazil Renato L. PRADO 1*, Isabel C. ESPIN FENOLL2, Irfan ULLAH3...Mat~ ao 1226, 05508-090 S~ao Paulo, S~ ao Paulo, Brazil 2 Department of Earth Sciences, University Sim...Zeferino Vaz, 13081-855 Campinas, S~ ao Paulo, Brazil 5 Laboratory of Geochronology, Institute of Geosciences...University of Brasılia, 70910-900 Brasılia, DF, Brazil 6 Museum f€ ur Naturkunde – Leibniz Institute for...do Lago 562, 05508-080 S~ ao Paulo, S~ ao Paulo, Brazil *Corresponding author. E-mail: renato.prado@iag |  | | Journal (article/letter/editorial) | | rocks of the Quadrilatero Ferrifero, Minas Gerais, Brazil, suggest three ages of intrusion: 2400 m.y. determined...15-22). The Nova Lima group consists of mica and quartz-mica schists with beds of metamorphosed iron formation...with local angular unconformity and consists of quartz-sericite schist, conglomerate, graywacke, quartzite...in de Geologia, 1958). The Caraga group consists Brazil are known only from the region of largely of quartzites...Quadrilatero Ferrifero of the State of Minas Gerais, Brazil, by the Brazilian Departamento Nacional da Produ |  | Fetter, Allen H., Saraiva dos Santos, Ticiano J., Van Schmus, William R., Hackspacher, Peter C., Bley de Brito Neves, Benjamin, Arthaud, Michel H., Nogueira Neto, José A., Wernick, Eberhard (2003) Evidence for Neoproterozoic Continental Arc Magmatism in the Santa Quitéria Batholith of Ceará State, NW Borborema Province, NE Brazil: Implications for the Assembly of West Gondwana. Gondwana Research, 6 (2) 265-273 doi:10.1016/s1342-937x(05)70975-8 | Journal (article/letter/editorial) | | Batholith of Cearii State, NW Borborerna Province, NE Brazil: Implications for the Assembly of West Gondwana...24A, no. 1515, CEP 13506-900, Rio Claro, S P - Brazil, E-mail:fetter@ms.rc.unesp.br lnstituto de Geoci2ncias...Caixa Postal: 6152, CEP 13081-970, Campinas, S P - Brazil Department of Geology, 1475 Jayhawk Blvd., Kansas...do Lago, 562, CEP 05508-900, S i o Paulo, S P - Brazil Universidade Federal do Ceark, Departamento de...Campus do Pici - Pici, CEP 60455-760 Fortaleza, CE - Brazil (Manuscript received June 2,2002; accepted December |  | | Journal (article/letter/editorial) | | Abstract Brazil has been a major but intermittent producer of gold since its discovery in 1500. Brazil led...hosted in Archean rocks produced 66% of the gold in Brazil, whereas deposits in Paleoproterozoic and Neoproterozoic...lia, Brazil E.A. Ladeira Rua Muzambino 355/404, Belo Horizonte, Minas Gerais 30310-280, Brazil Deposits...importance. The Archean and Paleoproterozoic terranes of Brazil largely lack base-metal-rich volcanogenic massive...in the CarajaÂs Mineral Province. Introduction Brazil has been an important producer of gold for centuries |  | Gonçalves, Leonardo, Alkmim, Fernando F., Pedrosa-Soares, Antônio C., Dussin, Ivo A., Valeriano, Claudio de M., Lana, Cristiano, Tedeschi, Mahyra (2016) Granites of the intracontinental termination of a magmatic arc: an example from the Ediacaran Araçuaí orogen, southeastern Brazil. Gondwana Research, 36. 439-458 doi:10.1016/j.gr.2015.07.015 | Journal (article/letter/editorial) | | From The Ediacaran Araçuaı́ Orogen, Southeastern Brazil Leonardo Gonçalves, Fernando F. Alkmim, Antônio...From The Ediacaran Araçuaı́ Orogen, Southeastern Brazil, Gondwana Research (2015), doi: 10.1016/j.gr.2015...THE EDIACARAN ARAÇUAÍ OROGEN, T SOUTHEASTERN BRAZIL SC RI P Leonardo Gonçalves1* 1 Departamento...Ouro, Morro do Cruzeiro, 35400-000 Ouro Preto, MG, Brazil; leonardogeologo@hotmail.com or leonardo@degeo...Ouro, Morro do Cruzeiro, 35400-000 Ouro Preto, MG, Brazil; ffalkmim@gmail.com MA Antônio C. Pedrosa-Soares2 |  | Pierosan, Ronaldo, de Lima, Evandro Fernandes, Nardi, Lauro Valentin Stoll, Bastos Neto, Artur Cesar, de Campos, Cristina P., Jarvis, Kym, Ferron, José Maximino Tadeu Miras, Prado, Mauricio (2011) Geochemistry of Palaeoproterozoic volcanic rocks of the Iricoumé Group, Pitinga Mining District, Amazonian craton, Brazil. International Geology Review, 53 (8) 946-979 doi:10.1080/00206810903391542 | Journal (article/letter/editorial) | | Group, Pitinga Mining District, Amazonian craton, Brazil a b Ronaldo Pierosan , Evandro Fernandes de Lima..., José Maximino Tadeu Miras Ferron & Mauricio Prado e a Programa de Pós-graduação em Geociências...Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil b Centro de Pesquisas em Geoquímica (CPGq), Instituto...Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil c Department für Geo- und Umweltwissenschaften...Paranapanema, Presidente Figueiredo, Vila Pitinga, Brazil Version of record first published: 16 Nov 2009 |  | Berni, G. V., Heinrich, C. A., Lobato, L. M., Wall, V. J., Rosiere, C. A., Freitas, M. A. (2014) The Serra Pelada Au-Pd-Pt Deposit, Carajas, Brazil: Geochemistry, Mineralogy, and Zoning of Hydrothermal Alteration. Economic Geology, 109 (7) 1883-1899 doi:10.2113/econgeo.109.7.1883 | Journal (article/letter/editorial) | | 1883–1899 The Serra Pelada Au-Pd-Pt Deposit, Carajás, Brazil: Geochemistry, Mineralogy, and Zoning of Hydrothermal...Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, Brazil 4 Colossus Minerals Inc., The Exchange Tower,...oxide-hosted copper-gold deposits of the Amazon craton in Brazil. The unusual low-temperature hydrothermal mineralization...hydrothermal mineral paragenesis comprises kaolinite, quartz, sericite, amesite (Mg-rich Al-silicate), amorphous...and near the eastern edge of the Amazon craton in Brazil. The Itacaiúnas belt comprises an Archean granitegneiss |  | Bastos Neto, Artur C., Ferron, José T.M.M., Chauvet, Alain, Chemale, Farid, de Lima, Evandro F., Barbanson, Luc, Costa, Clovis F.M. (2014) U–Pb dating of the Madeira Suite and structural control of the albite-enriched granite at Pitinga (Amazonia, Brazil): Evolution of the A-type magmatism and implications for the genesis of the Madeira Sn–Ta–Nb (REE, cryolite) world-class deposit. Precambrian Research, 243. 181-196 doi:10.1016/j.precamres.2013.12.021 | Journal (article/letter/editorial) | | the albite-enriched granite at Pitinga (Amazonia, Brazil): Evolution of the A-type magmatism and implications...Gonçalves 9500, CEP 91501-970 Porto Alegre, RS, Brazil Programa de Pós-graduação em Geociências, Instituto...Geociências, Universidade Federal do Rio Grande do Sul, Brazil c Centre Nationale des Recherches Scientifiques...Asa Norte, 70910-900 Brasília, Distrito Federal, Brazil e University of Orléans, CNRS/INSU, University...Pitinga Mine (Fig. 1) is the largest Sn producer in Brazil. The alluvial ore deposits, discovered in 1979 |  | | Journal (article/letter/editorial) | | yellow, and other irradiation-related colors in quartz K. NASSAU AND B. E. PRESCOTT Bell Laboratories... Almost 4oo specimens of natural and synthetic quartz were ~,-irradiated and then heated. Polarized absorption...considered to be the cause of the color in smoky quartz does not correlate with A t and Az, but with Aa...instances) in many specimens of natural and synthetic quartz; the color originates from the tail of a strong...variation in color of natural and irradiated smoky quartz can be explained by combinations of the smoky (As) |  | | Journal (article/letter/editorial) | | of the A-type Madeira granite (Amazonian Craton, Brazil) Astrid Siachoque, Carlos Alejandro Salazar, Ricardo...of the A-type Madeira granite (Amazonian Craton, Brazil), LITHOS (2016), doi:10.1016/j.lithos.2016.10.021...of the A-type Madeira granite (Amazonian Craton, Brazil) PT Tittle page: Emplacement of Madeira Granite...Cidade Universitária, 05508-080, São Paulo - SP - Brazil Telefone (11) 3091-3958 URL... The magnetic fabrics of the Redenção pluton (Brazil) define a concentric pattern AC CE P characterized |  | Atencio, D., Roberts, A. C., Cooper, M. A., Filho, L. A. D. Menezes, Coutinho, J. M. V., Stirling, J. A. R., Venance, K. E., Ball, N. A., Moffatt, E., Chaves, M. L. S. C., Brandão, P. R. G., Romano, A. W. (2012) Carlosbarbosaite, ideally (UO2)2Nb2O6(OH)2·2H2O, a new hydrated uranyl niobate mineral with tunnels from Jaguaraçu, Minas Gerais, Brazil: description and crystal structure. Mineralogical Magazine, 76 (1) 75-90 doi:10.1180/minmag.2012.076.1.75 | Journal (article/letter/editorial) | | mineral with tunnels from Jaguaraçu, Minas Gerais, Brazil: description and crystal structure D. ATENCIO1...Paulo, Rua do Lago, 562, 05508-080 São Paulo, SP, Brazil Geological Survey of Canada, 601 Booth Street,... 6627, 31270-901 Belo Horizonte, Minas Gerais, Brazil Canadian Conservation Institute, 1030 Innes Road... 6627, 31270-901 Belo Horizonte, Minas Gerais, Brazil [Received 31 December 2010; Accepted 1 December...Jaguaraçu municipality, Minas Gerais, Brazil. The name honours Carlos do Prado Barbosa (19172003). Carlosbarbosaite |  | Barreto, Carla Joana Santos, Lafon, Jean Michel, da Rosa Costa, Lúcia Travassos, Lima, Evandro Fernandes (2014) Palaeoproterozoic (~1.89 Ga) felsic volcanism of the Iricoumé Group, Guyana Shield, South America: geochemical and Sm-Nd isotopic constraints on sources and tectonic environment. International Geology Review, 56 (11) 1332-1356 doi:10.1080/00206814.2014.930800 | Journal (article/letter/editorial) | | Geociências, Universidade Federal do Pará, Belém, Brazil b Laboratório de Geologia Isotópica, Instituto...Geociências, Universidade Federal do Pará, Belém, Brazil c Serviço Geológico do Brasil, Companhia de Pesquisa...Pesquisa de Recursos Minerais, Belém, Brazil d Instituto de Geociências, Universidade Federal do Rio...Rio Grande do Sul, Porto Alegre, Brazil Published online: 04 Jul 2014. To cite this article: Carla Joana...Geociências, Universidade Federal do Pará, Belém, Brazil; bLaboratório de Geologia Isotópica, Instituto |  | | Journal (article/letter/editorial) | | and economic point of view, Africa, Russia, and Brazil. “gas shale”‐type resources have recently had...Piedad‐Sánchez, Suárez‐Ruiz, et al. (2004); Colmenero and Prado (1993); Águeda et al. (1991) García‐López et al...Jiménez, Laggoun‐Defarge, and Prado (1994); Suárez‐Ruiz and González‐ Prado (1986, 1990, 1996); Suárez‐Ruiz...image showing the typical silty–clayey texture with quartz and opaque grains. (2) Lutites of San Emiliano...outcrop and (2b) laminated clayey texture with quartz and mica grains. (3) Rodiles Fm: (3a) outcrop and |  | | Journal (article/letter/editorial) | | com/loi/tigr20 Geology and Mineral Resources of Brazil: A Review a a Inacio De Medeiros Delgado , Augusto...de Pesquisa de Recursos Minerals, Scdvador, Bahia, Brazil b US. Geological Survey, Denver, CO, 80225...Thorman (1994): Geology and Mineral Resources of Brazil: A Review, International Geology Review, 36:6,...rights reserved. Geology and Mineral Resources of Brazil: A Review INACIO DE MEDEIROS DELGADO, AUGUSTO J...de Pesquisa de Recursos Minerals, Scdvador, Bahia, Brazil AND CHARLES H. THORMAN US. Geological Survey |  | | Journal (article/letter/editorial) | | Au-PGE deposit, Serra dos CarajaÂs (Para State, Brazil): geological and geochemical indications for a...the Serra dos CarajaÂs, a leading mining area in Brazil. This region is characterised by a complex geological...to other gold deposits in the region (Igarape Bahia, AÂguas Claras). The Rio Fresco/AÂguas Claras sequence...sandstones, locally brecciated and cemented by quartz (sulphide) stockwork. Supergene alteration led...Cidade Universitaria, CP 20899, 01498 SaÄo Paulo, Brazil mineralised vs. nonmineralised samples. These |  | | Journal (article/letter/editorial) | | PABST Bahianite* Omeiite P. B. Moore, C. do Prado Barbosa and R. V. Gaines (1978) Bahianite, SbsAluOln(OH)2...Bahianite occurs as water-worn pebbles ('favas') with quartz, a n d a l u s i t e , k y a n i t e , d i a s...n t h e Paramirim region, south-central Bahia state, Brazil. The averageof four wet-chemical and microprobe...u . T h e n a m e i s f o r t h e S t a t e o f Bahia. The crystal structure has been previously described;...fractures in quartz and albite on numerousspecimensfrom Ilha de Taquaral, Minas Gerais,Brazil, in crystalsup |  | | Journal (article/letter/editorial) | | respective crystalline solids (A-type granite, quartz syenite) as the melts solidify at the level of...suite in Carajás, Amazonian craton (east-central Brazil). They show that the granites, charnockites, and...of granites were probably a mixture of fertile quartz-feldspathic rocks and micaceous metapelites enriched...granitoids may be derived by partial melting of quartz diorite, tonalite, and granodiorite. Creaser et...Skaergaard, Greenland Mumbulla suite, Australia Carajás, Brazil Red Hill granophyres, Australia Peraluminous |
|
