 | Milesi, J.P, Ledru, P, Marcoux, E, Mougeot, R, Johan, V, Lerouge, C, Sabaté, P, Bailly, L, Respaut, J.P, Skipwith, P (2002) The Jacobina Paleoproterozoic gold-bearing conglomerates, Bahia, Brazil: a “hydrothermal shear-reservoir” model. Ore Geology Reviews, 19 (1) 95-136 doi:10.1016/s0169-1368(01)00038-5 | Journal (article/letter/editorial) | | com/locate/oregeorev The Jacobina Paleoproterozoic gold-bearing conglomerates, Bahia, Brazil: a ‘‘hydrothermal...2001; accepted 19 October 2001 Abstract The N – S Jacobina foreland basin is a Paleoproterozoic basin (2080...zones for postsedimentary mesothermal quartz – tourmaline – muscovite/fuchsite lodes, which constitute...(euhedral chromite, Cr – rutile, linnaeite, Cr – tourmaline and fuchsite) and euhedral pyrite that crystallized...the high thermal regime that characterizes the Jacobina basin could reflect a contribution from both the |  | Ledru, P., Mile´si, J.P., Johan, V., Sabate´, P., Maluski, H. (1997) Foreland basins and gold-bearing conglomerates: a new model for the Jacobina Basin (Sa˜o Francisco province, Brazil) Precambrian Research, 86 (3) 155-176 doi:10.1016/s0301-9268(97)00048-x | Journal (article/letter/editorial) | | conglomerates: a new model for the Jacobina Basin (S o Francisco province, Brazil) P. L e d r u a,,, j . p ....metamorphic viewpoint, the Jacobina Basin in the S~o Francisco province (Brazil) is representative of the...mineralized conglomerates (sulphide, fuchsite, tourmaline, chromite, rutile), leaching of ultrabasic rocks...evolution is coherent with the development of the Jacobina Basin in a foreland position and its progressive...Davis et al., 1994), Franceville (Gabon), Jacobina (Brazil) and the North Guiana trough (French Guiana) |  | | 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 |  | Teixeira, João Batista Guimarães, de Souza, Jorge André Braz, da Silva, Maria da Glória, Leite, Carlson Matos Maia, Barbosa, Johildo Salomão Figueiredo, Coelho, Carlos Eduardo Silva, Abram, Maisa Bastos, Filho, Valter Mônaco Conceição, Iyer, Sundaram S.S. (2001) Gold mineralization in the Serra de Jacobina region, Bahia Brazil: tectonic framework and metallogenesis. Mineralium Deposita, 36 (3) 332-344 doi:10.1007/s001260100174 | Journal (article/letter/editorial) | | Gold mineralization in the Serra de Jacobina region, Bahia Brazil: tectonic framework and metallogenesis...Gold deposits in the Serra de Jacobina region in Bahia, northeastern Brazil, occur in a belt of siliciclastic...Federal da Bahia (CPGG/IGEO/UFBA), Campus UniversitaÂrio de Ondina, CEP 40170-290, Salvador, Bahia, Brazil...2862, Centro Administrativo da Bahia, CEP 41213-000, Salvador, Bahia, Brazil V.M.C. Filho Companhia Baiana...460, Centro Administrativo da Bahia, CEP 41750-300, Salvador, Bahia, Brazil S.S.S. Iyer Department of Physics |  | | Journal (article/letter/editorial) | | Federal da Bahia, Campus Universitário de Ondina, Sala 201-C, Salvador, 40170-290, Bahia, Brazil b Geological...Survey of Brazil (CPRM)-Av. Pasteur, 404, Urca, Rio de Janeiro, 22290-240, Rio de Janeiro, Brazil Received...from Venezuela (Imataca Complex), and others from Brazil (Quadrilátero Ferrífero, Itabira, and Guanhães)...mentioning that the Serra dos Carajás Basin in northern Brazil is older. It contains the worlds' largest iron...metamorphosed Caraíba deposit, Curaçá Valley, Bahia, Brazil. This is an unusual, strongly deformed copper |  | | Journal (article/letter/editorial) | | Paleoproterozoic crust of the São Francisco Craton, Bahia, Brazil: geodynamic features J.S.F. Barbosa a,∗ , P...40210-340 Bahia, Brazil b IRD—Representation in Brazil CP7091, Lago Sul, 71619-970 Brasilia, DF, Brazil Received...in the basement of the São Francisco Craton in Bahia. The oldest is the Gavião block in the WSW part...extends from SE Bahia along the Atlantic coast to Salvador, then northwards into NE Bahia. It is mainly...Geocronological; Geotectonic models; Mineral deposits; Bahia; Brazil 1. Introduction The essential features of the |  | | 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) | | magmatism of the JacobinaContendas Mirante belts (Bahia, Brazil)" Geologic and isotopic constraints on the sources...Salvador (BA) (Brazil) 2Companhia Baiana de Pesquisa Mineral (CBPM), Centro Administrativo da Bahia, 41500 Salvador...Salvador (BA) (Brazil) aCNRS and Blaise Pascal University, F-63038 Clermont-Ferrand (France) (Accepted...magmatism of the JacobinaContendas Mirante belts (Bahia, Brazil): Geologic and isotopic constraints on the sources...and the metasedimentary rocks of the Serra de Jacobina. They are two-mica or muscovite-garnet-bearing |  | | Journal (article/letter/editorial) | | eastern half of Brazil. Paleoarchean rocks occur as small cratonic nuclei in northeastern Brazil, but the cratons...northwestern Amazon Craton and possibly in northeastern Brazil. There are voluminous Paleoproterozoic and Mesoproterozoic...contain 5% of juvenile crust in central and southern Brazil, but are dominantly derived from reworking of older...deposits in the weathering zone are widespread in Brazil. L.A. Hartmann (&) Instituto de GeocieÃncias,...9500; 91501-970 Porto Alegre, Rio Grande do Sul, Brazil E-mail: afraneo@if.ufrgs.br I. de M. Delgado Brazilian |  | da Silva, Maria da Glória, Silva Coelho, Carlos Eduardo, Teixeira, João Batista Guimarães, da Silva, Fernando César Alves, Silva, Roberto Albuquerque, de Souza, Jorge André Braz (2001) The Rio Itapicuru greenstone belt, Bahia, Brazil: geologic evolution and review of gold mineralization. Mineralium Deposita, 36 (3) 345-357 doi:10.1007/s001260100173 | Journal (article/letter/editorial) | | Andre Braz de Souza The Rio Itapicuru greenstone belt, Bahia, Brazil: geologic evolution and review...Abstract Shear-hosted gold deposits in the Rio Itapicuru greenstone belt occur within supracrustal rocks...contains the largest gold deposits of northeastern Brazil. In contrast, ¯uid±rock interaction with volca...Federal da Bahia. Campus UniversitaÂrio de Ondina, CEP 40210-340, Salvador, Bahia, Brazil E-mail: gloria@ufba...Federal da Bahia/CNPq. Campus UniversitaÂrio de Ondina, CEP 40210-340, Salvador, Bahia, Brazil F.C.A. da |  | Davison, Ian, Batista Guimarães Teixeira, João, Da Glória Da Silva, Maria, Barretto Da Rocha Neto, Manoel, Martins Vieira Matos, Fernando (1988) The Rio Itapicuru greenstone belt, Bahia, Brazil: Structure and stratigraphical outline. Precambrian Research, 42 (1) 1-17 doi:10.1016/0301-9268(88)90007-1 | Journal (article/letter/editorial) | | Printed in The Netherlands THE RIO ITAPICURU GREENSTONE BELT, BAHIA, BRAZIL: STRUCTURE AND STRATIGRAPHICAL...T I N S VIEIRA MATOS 2 1Universidade Federal da Bahia, Curso de Pds-gradua¢fio em Geologia, Instituto...Moura, 123, Federa¢5o, CEP40.120, Salvador, Bahia (Brazil) ~DOCEGEO, Rio Doce Geologia e Minera¢5o S.A...Guadalajara, 20, Barra, CEP 40.160, Salvador, Bahia (Brazil) :~C.B.P.M., Companhia Baiana de Pesquisa Mineral...s/n, Centro Administrativo da Bahia, CEP 40.000, Salvador, Bahia (Brazil) (Received and accepted March |  | Chauvet, A., Faure, M., Dossin, I., Charvet, J. (1994) A three-stage structural evolution of the Quadrilátero Ferriífero: consequences for the Neoproterozoic age and the formation of gold concentrations of the Ouro Preto area, Minas Gerais, Brazil. Precambrian Research, 68 (1) 139-167 doi:10.1016/0301-9268(94)90069-8 | Journal (article/letter/editorial) | | concentrations of the Ouro Preto area, Minas Gerais, Brazil A. C h a u v e t , M . F a u r e , I. D o s s i...the southern part of the S~o Francisco Craton (Brazil), where three major Proterozoic supracrustal units...recrystallized quartz, carbonate, sulphide, chlorite and tourmaline. Microscopic analysis and veins geometry allow...Introduction The Quadril~itero Ferrifero (Minas Gerais, Brazil), like most of the Archaean greenstone belts, is...and Figueiredo, 1991; Machado et al., 1992). In Brazil, it has not been demonstrated whether the metasedimentary |  | | Journal (article/letter/editorial) | | e r a l i z a t i o n in Central E a s t e r n Brazil: a review A. Bernasconi Terraconsult AG, Steinwiesstrasse24...the major Archaean terranes of central eastern Brazil is given in the first section of this paper. Integration...Jequie and Goias mobile belts of central eastern Brazil. This mineralization associated with greenstone...within the mafic metavolcanic unit of the Rio Itapicuru belt and other small gold occurrences such as...of the most important Archaean gold districts of Brazil, the Iron Quadrangle of Minas Gerais (Fig. 1), |  | | Journal (issue) | | setting Gem sapphirine is being recovered from a mine about Sapphirine is derived and obtained from rocks...Sri Lanka the gem sapphirine comes from a carats. mine located near the 9th milepost along the Abstract...emeralds and their occurrences: Socoto, Socotó, Bahia Dr Dietmar Schwarz*, Schwarz*, Thomas Eidt** Eidt**...Minas Gerais, Brazil **University of Mainz, West Germany ***CPRM, Salvador, Bahia, Brazil 1. Introduction...area of Socoto Socotö is located in northwestern Bahia about 25 km NE of Campo Formoso Carnafba and 40 |  | Mello, Edson F., Xavier, Roberto P., McNaughton, Neal J., Hagemann, Steffen G., Fletcher, Ian, Snee, Larry (2006) Age constraints on felsic intrusions, metamorphism and gold mineralisation in the Palaeoproterozoic Rio Itapicuru greenstone belt, NE Bahia State, Brazil. Mineralium Deposita, 40 (8) 849-866 doi:10.1007/s00126-005-0037-3 | Journal (article/letter/editorial) | | the Palaeoproterozoic Rio Itapicuru greenstone belt, NE Bahia State, Brazil Received: 24 February 2004...crystals from felsic intrusive rocks from the Rio Itapicuru greenstone belt show two development stages between...Universitária, Ilha do Fundão, Rio de Janeiro, 21949-900, Brazil e-mail: mello@geologia.ufrj.br Tel.: +55-021-25989464...Universidade Estadual de Campinas (Unicamp), Campinas, SP, Brazil N. J. McNaughton . S. G. Hagemann . I. Fletcher... Rio Itapicuru greenstone belt . São Francisco Craton . Brazil Introduction The Rio Itapicuru greenstone |  | | Journal (article/letter/editorial) | | Preta žFMP / gold deposit, Rio Itapicuru Greenstone Belt, Bahia, Brazil Roberto P. Xavier ) , Robert P...sector of the lower Proterozic Rio Itapicuru greenstone belt, NE Brazil. Alteration is pervasive throughout...´ Estadual de Campinas, 13.083-970—Campinas-SP, Brazil. Fax: q55-19-239-1562; E-mail: xavier@ige.unicamp...microspectroscopy 1. Introduction The Paleoproterozoic Rio Itapicuru greenstone belt Ž2.2–1.8 Ga. at the northeastern...craton, State of Bahia, has been a very important gold-producing district in northeast Brazil since 1980. |  | Teixeira, J. B. G., Kishida, A., Marimon, M. P. C., Xavier, R. P., McReath, I. (1990) The Fazenda Brasileiro gold deposit, Bahia; geology, hydrothermal alteration, and fluid inclusion studies. Economic Geology, 85 (5) 990-1009 doi:10.2113/gsecongeo.85.5.990 | Journal (article/letter/editorial) | | 20 Rua Guadalajara, Barra, Salvador, Bahia Cep 40.160, Brazil R. P. XAVIER, Institutode Geocidncias...Cidade Universitdria,Campinas,SaoPauloCep 13.100, Brazil AND I. MCREATH Departamentode GeologiaGeral, Institutode... Cidade Universitdria,Cep 01498, Sc7o Paulo,SP,Brazil Abstract The high-gradegold mineralizationat ...Mineragio S.A. (DOCEGEO), is in the northeastregionof Bahia,approximately 200 km northwestof the state capital...districtat the extremesouthernpart of the Rio Itapicuru greenstone belt (Teixeira and Kishida, 1980). |  | | Journal (article/letter/editorial) | | of the Paleoproterozoic Rio Itapicuru granite-greenstone belt (Bahia, Brazil): the role of synkinematic...Caetano Moura, 123 CEP 40210-340 Salvador, Bahia, Brazil c Institut Universitaire de France, Paris, France...structural evolution of the Rio Itapicuru greenstone belt (RIGB, Bahia, Brazil) involves two tectonic events...the RIGB. © 1997 Elsevier Science B,V. Keywords: Brazil; Greenstone belts; Paleoproterozoic ; Quartz fabrics;...the Paleoproterozoic Rio Itapicuru greenstone belt (RIGB, Bahia state, NE Brazil) using structural and kinematic |  | | Journal (issue) | | Brazilian emeralds and their occurrences: Carnaiba, Bahia Dr Dietmar Schwarz* and Thomas Eidt, Dipl.Geol...Federal University of Ouro Preto, Minas Gerais, Brazil **University of Mainz, FRG 1. Introduction The...occurrences of Carnaiba and Socoto in the state of Bahia are located at a distance of about 40 kilometres...centre for the gemstones mined in the state of Bahia (besides emerald, others include amethyst, citrine...north-south extending mountains of the Serra de Jacobina (Figure 2). It has an extension of about 200 km |  | | Journal (article/letter/editorial) | | fuchsitic mica; and albite. In some deposits, tourmaline may be a common gangue phase associated with...at the site commencing in 1897. Production at the mine has changed in focus since 1986 Cumulative Production...be seen in a change in annual production at the mine from 23.11 t Au in 1999 to 19.93 t Au in 2000 and...the remaining resources and reserves within the mine (Anglo Gold Ashanti, 2004–2015). In terms of global...such as issues over cyanide gold extraction, acid mine drainage, and social issues that include resettlements |  | | Journal (article/letter/editorial) | | Preta ŽFMP. gold deposit, Rio Itapicuru Greenstone Belt, Bahia, Brazil R.P. Xavier and R.P. Foster ....Chemical and Rb–Sr, Sm–Nd isotopic systematics of tourmaline from the Dachang Sn-polymetallic ore deposit...in marine evaporitic oils of the Potiguar Basin, Brazil J.A.D. Lopes, E.V. Santos Neto, M.R. Mello, L....associated with Si, Al, Fe gels in a granitic uranium mine T. Allard, P. Ildefonse, C. Beaucaire and G. Calas.... . . . . . . . Boron isotope systematics of tourmaline formation in the Sullivan Pb–Zn–Ag deposit, British |  | | Book | | Alkmim Editors São Francisco Craton, Eastern Brazil Tectonic Genealogy of a Miniature Continent Regional...Alkmim • Editors São Francisco Craton, Eastern Brazil Tectonic Genealogy of a Miniature Continent 123...Estado do Rio de Janeiro Maracanã, Rio de Janeiro Brazil Fernando F. Alkmim Escola de Minas Universidade...Preto Ouro Preto Brazil Umberto G. Cordani Universidade de São Paulo São Paulo Brazil ISSN 2364-6438...significant contributor to the mining industry in Brazil. This book provides a state of knowledge overview |  | Grandjean da Costa, Felipe, Luiz Klein, Evandro, Harris, Chris, Roopnarain, Sherissa (2019) Fluid inclusion and stable isotope (O, H, C) constraints on the genesis of the Pedra Branca gold deposit, Troia Massif, Borborema Province, NE Brazil: An example of hypozonal orogenic gold mineralization. Ore Geology Reviews, 107. 476-500 doi:10.1016/j.oregeorev.2019.03.007 | Journal (article/letter/editorial) | | gold deposit, Troia Massif, Borborema Province, NE Brazil: an example of hypozonal orogenic gold mineralization...gold deposit, Troia Massif, Borborema Province, NE Brazil: an example of hypozonal orogenic gold mineralization...gold deposit, Troia Massif, Borborema Province, NE Brazil: an example of hypozonal orogenic gold mineralization...Roopnaraine a Geological Survey of Brazil, Fortaleza, CE, Brazil b GPGE – Grupo de Pesquisas em Geologia...Econômica, Federal University of Pará, Belém, PA, Brazil c PPGG – Programa de Pós-Graduação em Geologia |  | Bogossian, Jessica, Hagemann, Steffen G., Rodrigues, Vinicius G., Lobato, Lydia Maria, Roberts, Malcolm (2020) Hydrothermal alteration and mineralization in the Faina greenstone belt: evidence from the Cascavel and Sertão orogenic gold deposits. Ore Geology Reviews, 119. 103293 doi:10.1016/j.oregeorev.2019.103293 | Journal (article/letter/editorial) | | Belo Horizonte, Minas Gerais, CEP 31270-901, Brazil 4 Centre for Microscopy, Characterisation and...The Faina greenstone belt is located in central Brazil and contains the Cascavel and Sertão gold deposits...quartz-chlorite-calcite and proximal white mica-biotite-tourmaline-siderite-pyrite. Native gold is located within...comparable with other orogenic gold systems in Brazil and worldwide. Keywords: Faina greenstone belt...Sertão deposits, hydrothermal alteration, central Brazil 1. Introduction Archean and Paleoproterozoic greenstone |  | | Journal (article/letter/editorial) | | goldfield, India Nevoria, W. Australia Cuiaba Mine, SE Brazil Bronzewing, W. Australia Junction, W. Australia...district Indarama, Kwekwe district Igarape Bahia, Brazil Hutti, India Hira-Buddini, India Lac des Iles...Dam, W. Australia Missouri, W. Australia Lamego, Brazil Age, Ma Late Archean 2673–2650 Late Archean 2730...with allowance for gold extracted over the entire mine life. Deposits with reserves over 100 tons usually...Minas, Brazil Eloise, Australia Starra, Australia Osborne, Australia Starra, Australia Caxias, Brazil Fazenda |
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