 | 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) | | mineralization in the Serra de Jacobina region, Bahia Brazil: tectonic framework and metallogenesis Received:...deposits in the Serra de Jacobina region in Bahia, northeastern Brazil, occur in a belt of siliciclastic metasedimentary...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 |  | 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) | | for the Jacobina Basin (S o Francisco province, Brazil) P. L e d r u a,,, j . p . Mil6si a, V. J o h a...the Jacobina Basin in the S~o Francisco province (Brazil) is representative of the foreland basins that...alteration within mineralized conglomerates (sulphide, fuchsite, tourmaline, chromite, rutile), leaching of ultrabasic...Davis et al., 1994), Franceville (Gabon), Jacobina (Brazil) and the North Guiana trough (French Guiana), have...sense, the Palaeoproterozoic Jacobina Basin in Brazil, which has so far produced about 50 t of gold, |  | 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) | | Paleoproterozoic gold-bearing conglomerates, Bahia, Brazil: a ‘‘hydrothermal shear-reservoir’’ model J...cataclastic quartz, quartz – pyrite mylonite and rare fuchsite-bearing rocks) that had been hydrothermally altered...postsedimentary mesothermal quartz – tourmaline – muscovite/fuchsite lodes, which constitute a possible source of the...chromite, Cr – rutile, linnaeite, Cr – tourmaline and fuchsite) and euhedral pyrite that crystallized over andalusite...Jacobina basin in the São Francisco province of Bahia, Brazil are of special interest relative to this debate |  | | Journal (article/letter/editorial) | | Auriferous Conglomerates, Canavieiras Mine, Jacobina,Brazil W. H. Gaoss Abstract Quartz-pebbleconglomerates...conglomerates of Precambrian age at' Jacobina, Brazil. In 1958 BatemancomparedJacobinato the gold ores...relationshipcould be the only undergroundgold mine working in Bahia. established betweenthe longaxesof the pebblesand...minerals as white mica, magnetite,tourmaline, zircon, fuchsite,pyrite, gold and uraninite. The Jacobina Series...suggestedthat the intrusives supplied chromiumto form the fuchsite(chromianmuscovite) gold and other minerals to |  | | Journal (article/letter/editorial) | | THE JACOBINA CONGLOMERATE, DENNIS AURIFEROUS BRAZIL P. COX ABSTRACT Gold occurs in conglomeratebeds...Jacobina Series of Precambrian age in northeastern Brazil. The series is 8,000 m thick and includespelitic...Jacobina,about 350 km by road northwestof Salvador,Bahia, Brazil (Fig. 1). The depositswere describedby Flaherty...sponsored by the University of Bahia, and the resultswere publishedin Brazil (6). The brief summaryof this...JacobinaSerieshasbeengenerally correlatedon the GeologicMap of Brazil with the Minas Seriesof middle Precambrian age |  | | Journal (article/letter/editorial) | | CHROX{IAN 1\,IUSCOVITE F'RON{ THE SERRA DE JACOBINA, BAHIA, BRAZIL1 (i. W. Leo, H. J. Rosn, Jn. lNo J. J. Wenr...Jacobina (Jacobinarange) in the state of Bahia in northeastern Brazil, it was noted that isolated layers of...amounts of CrzOahas been variously referred to as fuchsite,mariposite,or chromian (chrome-, chromiferous)...structure which have generally been referred to as fuchsite. This usageis adopted for the green mica from...classification established by Whitmore et al. (1946),fuchsite and/or maripositemav occur (1) associated with |  | | Journal (article/letter/editorial) | | micas variously classed as chromiferous muscovite, fuchsite and mariposite occur chiefly in two types of geological...whereasonlv the 2M structure has been found in fuchsite (Heinrich and Levinson, 1955; Clifford, 1957)...probably exceedsconsiderably that of hyd,rothermal fuchsite plus mariposite. Cunolrr.tx MuscovrrB rN MoNTANA...presencecf a micaceousmineral." The occurrenceof fuchsite in a New Hampshire conglomeraticquartzite alsois...occurrences in Tanganyika of quartzite colored green by fuchsite are reported by Bassett (1956) who states (p. |  | 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) | | Palaeoproterozoic Rio Itapicuru greenstone belt, NE Bahia State, Brazil Received: 24 February 2004 / Accepted: 22...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...Itapicuru greenstone belt . São Francisco Craton . Brazil Introduction The Rio Itapicuru greenstone belt...of the Rio Itapicuru greenstone belt in northern Brazil, within the São Francisco Craton (Oliveira et al |  | | 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 |  | | Book (volume) | | Mursinka, Ural Mtns., Russia, 58 Hematite Brumado, Bahia, Brazil, 61 Cleator Moor, Cumberland Ore Field, West...Italy, 37 Sellaite (with Fuchsite) Serra das Éguas, Brumado, Bahia, Brazil, 24 Shattuckite (with Malachite)...Pederneira Claim, São José da Safira, Minas Gerais, Brazil, 35 (on Quartz) Tourmaline Queen Mine, San Diego |  | Teles, Guilherme S., Chemale, Farid, Ávila, Janaína N., Ireland, Trevor R., Dias, Airton N.C., Cruz, Daniele C.F., Constantino, Carlos J.L. (2020) Textural and geochemical investigation of pyrite in Jacobina Basin, São Francisco Craton, Brazil: Implications for paleoenvironmental conditions and formation of pre-GOE metaconglomerate-hosted Au-(U) deposits. Geochimica et Cosmochimica Acta, 273. 331-353 doi:10.1016/j.gca.2020.01.035 | Journal (article/letter/editorial) | | Pyrite in Jacobina Basin, São Francisco Craton, Brazil: Implications for Paleoenvironmental Conditions...Pyrite in Jacobina Basin, São Francisco Craton, Brazil: Implications for Paleoenvironmental Conditions...Pyrite in Jacobina Basin, São Francisco Craton, Brazil: Implications for Paleoenvironmental Conditions...Universidade Federal de Campina Grande, Campina Grande, Brazil 2Programa 3Programa de Pós-Graduação em Geologia...Geologia, Universidade de Brasília, Brasília, Brazil de Pós-Graduação em Geologia, Universidade do Vale do |  | | Catalog/List | | Tonca de Onca Mine, Virgem de Lapa Minas Gerais Brazil This is the end member of the Polylithionite- Trilithionite...side. quite pleasing combination . Brumado, Bahia , Brazil about 2x2 inches £40 34 MIMETITE rich coating...double terminated crystal, 18mm x 5mm Ipira, Bahia Brazil £12 - 41 FLUORITE complete octahedral cle~v~ge...of dark blue intergrown fibrous crystals with Fuchsite Pollone, Biella, Piedmont Italy small 2x2 inch...micro piece Jacupiranga Mine, Cajati, Sao Paulo, Brazil £20 51 WA YLANDITE micro brown spheres, scattered |  | | 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...of the most important Archaean gold districts of Brazil, the Iron Quadrangle of Minas Gerais (Fig. 1),...the Archaean gold metallogeny of central eastern Brazil based on the presently known major raineralized |  | Farkaš, Juraj, Chrastný, Vladislav, Novák, Martin, Čadkova, Eva, Pašava, Jan, Chakrabarti, Ramananda, Jacobsen, Stein B., Ackerman, Lukáš, Bullen, Thomas D. (2013) Chromium isotope variations (δ53/52Cr) in mantle-derived sources and their weathering products: Implications for environmental studies and the evolution of δ53/52Cr in the Earth’s mantle over geologic time. Geochimica et Cosmochimica Acta, 123. 74-92 doi:10.1016/j.gca.2013.08.016 | Journal (article/letter/editorial) | | Elen Peninsula Medelin Loma Peguera Loma Peguera Bahia, Campofor. Norway Austria Fore-arc settings of...and L. Cretaceous (100 Rep. harzburgite)13 Ma) Brazil Layered intrusion, Faulted shield margin (stratiform...NQ460 26 NQ659 27 CDN-00 28 L19 29 PBR-A1 Bahia, Campofor. Goias, Niqueland. Goias, Niqueland. Goias...Minas Gerais Country Brazil Brazil Brazil Brazil Brazil Ceara, Pedra Brazil Bran Geotectonic settings...hydrothermal Cr-rich minerals such as crocoite, fuchsite, chrome chalcedony, chrome diopside, chrome tremolite |  | Oliveira, Elson P, Windley, Brian F, McNaughton, Neal J, Pimentel, Marcio, Fletcher, Ian R (2004) Contrasting copper and chromium metallogenic evolution of terranes in the Palaeoproterozoic Itabuna–Salvador–Curaçá orogen, São Francisco craton, Brazil: new zircon (SHRIMP) and Sm–Nd (model) ages and their significance for orogen-parallel escape tectonics. Precambrian Research, 128 (1) 143-165 doi:10.1016/j.precamres.2003.09.018 | Journal (article/letter/editorial) | | Itabuna–Salvador–Curaçá orogen, São Francisco craton, Brazil: new zircon (SHRIMP) and Sm–Nd (model) ages and...Instituto de Geociências, UNICAMP, Campinas 13083-970, Brazil b Department of Geology, Leicester University,...Instituto de Geociências, UnB, 70910-900, DF, Brazil Received 5 May 2003; accepted 23 September 2003...collisional orogen in the São Francisco craton (Brazil) comprises two high-grade terranes separated by...Chromite; Geochronology; Palaeoproterozoic orogen; Brazil 1. Introduction ∗ Corresponding author. Tel.: |  | | Report (volume) | | Uranium at Morro do Vento Serra de Jacobina Brazil GEOLOGICAL SURVEY BULLETIN Prepared for the U.S...Vento Serra de Jacobina Brazil By MAX G. WHITE URANIUM INVESTIGATIONS IN BRAZIL GEOLOGICAL SURVEY BULLETIN...pocket FIGURE 1. Index map of a part of eastern Brazil.________-___--_.---__ A2 2. Map of Morro do Vento... URANIUM INVESTIGATIONS IN BRAZIL URANIUM AT MORRO DO VENTO, SERRA DE JACOBINA BRAZIL By MAX G. WHITE ABSTRACT...south of the town of Jacobina in central Bahia, eastern Brazil. Morro do Vento is one of the hills that |  | | Journal (article/letter/editorial) | | University] at 02:10 27 October 2013 Minas Gerais, Brazil O ne of the most interesting and at times quite...3-cm kyanite crystal on quartz from Minas Gerais, Brazil. The Marcus Grossmann specimen was photographed...Coronel Murta, Minas Gerais, Southeast Region, Brazil. Arkenstone photo. mentions that beautiful groups...7-cm kyanite on quartz specimen from Minas Gerais, Brazil. Anonymous specimen owner, Jeff Scovil photo. ...Coronel Murta, Minas Gerais, Southeast Region, Brazil. Arkenstone photo. Figure 4. An example of intense |  | | Journal (article/letter/editorial) | | adjacent areas, northern São Francisco Craton, Brazil, based on structural geology and gravimetric modeling...adjacent areas, northern São Francisco Craton, Brazil, based on structural geology and gravimetric modeling...adjacent areas, northern São Francisco Craton, Brazil, based on structural geology and gravimetric modeling...Ulysses Guimarães, 2862, 41213-000 Salvador, BA, Brazil 2. Programa de Pós-Graduação em Geologia, Universidade... Campus Darcy Ribeiro, 70904-970 Brasília, DF, Brazil 3. Programa de Pós-Graduação em Geologia, Universidade |  | Chemale, Farid, Dussin, Ivo A., Alkmim, Fernando F., Martins, Maximiliano Sousa, Queiroga, Gláucia, Armstrong, Richard, Santos, Marcelo N. (2012) Unravelling a Proterozoic basin history through detrital zircon geochronology: The case of the Espinhaço Supergroup, Minas Gerais, Brazil. Gondwana Research, 22 (1) 200-206 doi:10.1016/j.gr.2011.08.016 | Journal (article/letter/editorial) | | case of the Espinhaço Supergroup, Minas Gerais, Brazil Farid Chemale Jr. a,⁎, Ivo A. Dussin b, Fernando...IG-UnB, 70904-970, Brasília-DF, Brazil CPGEO/USP, São Paulo, SP, Brazil IGC-UFMG, Campus da Pampulha, Belo...Horizonte, MG, Brazil d DEGEO/EM/UFOP, Morro do Cruzeiro, 35400–000, Ouro Preto, MG, Brazil e RSES, ANU...Canberra, Australia f PPGGEO, UFRGS, Porto Alegre-RS, Brazil b c a r t i c l e i n f o Article history: Received...mountain range in the State of Minas Gerais, eastern Brazil (Fig. 1A). The aim of this paper is to constrain |  | Clifford, T. N., Rex, D. C., Green, R., le Roex, A. P., Pienaar, H. S., Bühmann, D. (1999) Chromian illite-ankerite-quartz parageneses from the Kintail district of southern Ross-shire, Scotland. Mineralogical Magazine, 63 (1) 37-52 | Journal (article/letter/editorial) | | z rocks that are similar in appearance to the fuchsite(or mariposite)-carbonate-quartz parageneses that...Fig. 1), 1999 The Mineralogical Society where fuchsite occurs with garnet, perhaps "as an alteration...elsewhere in the world similar parageneses, bearing fuchsite (chromian muscovite) or mariposite (chromian phengite)...(1946) on parageneses bearing chromian micas (fuchsite and mariposite), Martyn and Johnson (1986) have...1965). (2) metasomatic parageneses represented by fuchsite(or mariposite)-ankerite-quartz assemblages commonly |  | | Catalog/List | | matrix. 40x30x15mm. £12. 30) MUSCOVITE (Cr) var FUCHSITE and CORUNDUM (Ruby). Minas Geraes. A nice showy...£15. 40) RU n H M AT I T E . Novo Horizonte, Bahia, Brazil. Nice thumbnail showing several blocky hematite |  | | Journal (article/letter/editorial) | | USA and Africa, and also previously measured in Brazil and Chile, indicates that climatic conditions at...weathering profiles in the Amazon and southeastern Brazil ( VASCONCELOSet al., 1992, 1993a). Jarosite and...of the fresh ores indicates that fine-grained fuchsite (a Cr-rich variety of muscovite) occurs as microcrystalline...jarosite crystals from Syama also indicates that fuchsite crystals occur in association with the weathered...weathered assemblage. During weathering, fuchsite is partially stained by iron oxides/ hydroxides and turns |  | Brenner, T. L., Teixeira, N. A., Oliveira, J. A. L., Franke, N. D., Thompson, J. F. H. (1990) The O'Toole nickel deposit, Morro do Ferro greenstone belt, Brazil. Economic Geology, 85 (5) 904-920 doi:10.2113/gsecongeo.85.5.904 | Journal (article/letter/editorial) | | Nickel Deposit, Morro do Ferro GreenstoneBelt, Brazil T. L. BRENNER,*N. A. TEIXEIRA,J. A. L. OLIVEIRA...H. THOMPSON BP MineraqtioLtda., Bio de Janeiro,Brazil Abstract The O'Tooleorebodyis the firstsignif...the volcanicperidotitc association to be foundin Brazil. It is in the ArchcanMorro do Ferro greenstonebelt...greenstonebelt in the southwestpart of Minas Gerais,Brazil. The depositis hostedby the Morro do N•quel unit characterized...Ferro greenstonebelt in the southernedge found in Brazil. Introduction of the major ArchcanParamirimcratonin |  | Romero, Rurik, González-Jiménez, José M., Barra, Fernando, Leisen, Mathieu, Garrido, Leonardo N., Talavera, Cristina, Gain, Sarah E. M., Griffin, William L., O’Reilly, Suzanne Y., Reich, Martin, Morata, Diego (2018) Timing the tectonic mingling of ultramafic rocks and metasediments in the southern section of the coastal accretionary complex of central Chile. International Geology Review, 60 (16) 2031-2045 doi:10.1080/00206814.2017.1402377 | Journal (article/letter/editorial) | | identical, within error, to a previously reported K-Ar fuchsite cooling age of 282 ± 6 Ma from the reaction zone...radiometric age available for the area is a K-Ar date on fuchsite associated with abundant Crtourmaline, collected...metabasites and metapelites (Rabbia et al. 1997). The fuchsite yielded an age of 282 ± 6 Ma which was interpreted...further south in micas from metapelites of the Bahia Mansa Complex, 243 ± 4 Ma in Mehuín (39° 25ʹ S)...with antigorite. K-Ar dating of a Cr-rich mica (fuchsite) from this domain yielded a cooling age of 286 |  | | Journal (article/letter/editorial) | | commonly produce Cr-silicate minerals including “fuchsite/mariposite” (Cr-muscovite: <19 Cr wt%), “uvarovite”...(chromite) and Cr-silicates including Crmica (fuchsite/mariposite), Cr-garnet (uvarovite), Cr-clinochlore...mg kg–1 920 Reference White, 1971 Goias State, Brazil 66–13,200 Brooks et al., 1992 Ireland 29–5...noteworthy plants include Lophostachys villosa from Brazil (Brooks et al., 1992), Arenaria humifusa from Newfoundland...Italy Italy Italy Italy Goias State, Brazil Goias State, Brazil Location TABLE 3. Serpentine Soil Plant |
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Bahia, Brazil