 | | Journal (article/letter/editorial) | | altered chromitites of the Campo Formoso layered intrusion (Bahia State, Brazil): control by magmatic and...hydrothermal metasomatism in chromitites of the Campo Formoso layered intrusion produced spectacular chromite...stable at low temperature. The Campo Formoso layered intrusion of Brazil provides a useful example for...chromitite layers from one of the deposits of Campo Formoso (Cascabullhos), and emphasized the similarity...exposed in the mines of Cascabulhos, Pedrinhas, Limoeiro, and Mato Limpo. The principal aim of this investigation |  | Lord, R. A., Prichard, H. M., S.SA, J. H., Neary, C. R. (2004) Chromite Geochemistry and PGE Fractionation in the Campo Formoso Complex and Ipueira-Medrado Sill, Bahia State, Brazil. Economic Geology, 99 (2) 339-363 doi:10.2113/gsecongeo.99.2.339 | Journal (article/letter/editorial) | | Fractionation in the Campo Formoso Complex and Ipueira-Medrado Sill, Bahia State, Brazil R. A. LORD,† Clean...de Geociências, Universidade Federal da Bahia, Salvador, Brazil AND C. R. NEARY Formerly at Natural Environment...retrograde alteration and serpentinization. In Campo Formoso a deeply eroded stratiform complex contains...orthopyroxene relicts in an upper unit at the Cascabulhos mine. Microprobe studies of chromite-rich specimens from...for mineralization elsewhere in the sill. At Campo Formoso the alternation of PGE-enriched chromitite and |  | | Journal (article/letter/editorial) | | the Northern Edge of the São Francisco Craton, Brazil Vitor Bandeira Martins Matos* and Cesar Fonseca...Brasília, Brasília, Distrito Federal 70910-900, Brazil Abstract The Caboclo dos Mangueiros deposit, the...recent discovery of Ni-Cu sulfide mineralization in Brazil, has estimated resources of 200 million tonnes...pseudomorphic replacement of olivine by serpentine and magnetite and of clinopyroxene by tremolite-actinolite....pseudomorphs (i.e., tremolite-actinolite + serpentine + magnetite), and rocks from the border zone (i.e., actinolite |  | | Journal (article/letter/editorial) | | Economic Geology, v. 108, pp. 1753–1771 The Limoeiro Deposit: Ni-Cu-PGE Sulfide Mineralization Hosted...Conduit in the Borborema Province, Northeastern Brazil Jonas Mota-e-Silva,1,2,† Cesar Fonseca Ferreira...01037-912, Brazil 2 Instituto de Geociências, Universidade de Brasília, Brasília, DF. 70910-900, Brazil Abstract...Abstract The Limoeiro deposit, located in a high-grade mobile belt of the Brasiliano orogenic cycle (650–500...age of the ultramafic intrusion that hosts the Limoeiro deposit is not yet known, but regional geologic |  | | Journal (article/letter/editorial) | | Ipueira-Medrado Sill, São Francisco Craton, Bahia State, Brazil JULIANA CHARÃO MARQUES† Instituto de Geociências...Caixa Postal 15001, CEP 91501-970, Porto Alegre-RS, Brazil AND CESAR FONSECA FERREIRA FILHO Instituto de...Universitário, Asa Norte, Brasília-DF, CEP 70910-900, Brazil Abstract The Ipueira-Medrado mafic-ultramafic...mafic-ultramafic sill hosts the largest chromite deposit in Brazil. The sill is a 7-kmlong and 300-m-thick elongated...representing the largest concentration of chromite in Brazil (Marinho et al., 1986). The ore in the Ipueira-Medrado |  | Mota-e-Silva, J., Prichard, H. M., Filho, C. F. Ferreira, Fisher, P. C., McDonald, I. (2015) Platinum-group minerals in the Limoeiro Ni–Cu–(PGE) sulfide deposit, Brazil: the effect of magmatic and upper amphibolite to granulite metamorphic processes on PGM formation. Mineralium Deposita, 50 (8) 1007-1029 doi:10.1007/s00126-015-0585-0 | Journal (article/letter/editorial) | | Platinum-group minerals in the Limoeiro Ni–Cu–(PGE) sulfide deposit, Brazil: the effect of magmatic and...Springer-Verlag Berlin Heidelberg 2015 Abstract The Limoeiro Ni–Cu–(platinum-group elements (PGE)) deposit...igneous tubular conduit system in northeastern Brazil. Representative ores from the deposit have been...13212-161, Brazil 2 Instituto de Geociências, Universidade de Brasilia, Brasília, DF 70900-970, Brazil 3 ...blebs that formed and were transported within the Limoeiro magma conduit. Keywords Platinum-group-minerals |  | | Book | | 1982 Jules Roger Sauer ” Foreword For years Brazil has been the major producer of colored stones in...metamorphic rocks, the variety of gem deposits in Brazil is almost infinite. In addition to the mineral...assemblage one might expect from pegmatite dikes, Brazil also produces a very significant output of diamonds...written in English, and beautifully illustrated. “Brazil, Paradise of Gemstones’, by Jules Roger Sauer,...turquoise vein near the village of Casa Nova, in Bahia, later flooded by the waters of the Sobradinho dam |  | De Oliveira, Ester Figueiredo, Castañeda, Cristiane, Eeckhout, Sigrid Griet, Gilmar, Messias Menezes, Kwitko, Rogério Ribeiro, De Grave, Eddy, Botelho, Nilson Francisquini (2002) Infrared and Mössbauer study of Brazilian tourmalines from different geological environments. American Mineralogist, 87 (8) 1154-1163 doi:10.2138/am-2002-8-914 | Journal (article/letter/editorial) | | 941 CEP 30123-970, Belo Horizonte, Minas Gerais, Brazil 2 Instituto de Geociências, Universidade de Brasília...3173 CEP 30140-970, Brasília, Distrito Federal, Brazil 3 Department of Subatomic and Radiation Physics...Preto, CEP 35400-000 Ouro Preto, Minas Gerais, Brazil 5 Companhia Vale do Rio Doce, CVRD, BR 262-Km 296...Box 09 CEP 33010-970, Santa Luzia, Minas Gerais, Brazil ABSTRACT Infrared (IR) spectra in the OH stretching...hydrothermal deposits in the state of Minas Gerais, Brazil. In the magmatic environment, samples of tourmaline |  | | Journal (issue) | | NUMBER SIX APRIL 1993 Cover Picture The Hematita mine in Minas Gérais in 1987 - probably the richest alexandrite...deposits of alexandrite, cat's-eye and chrysoberyl in Brazil' pp. 333-54) ISSN: 0022-1252 F.G.A. your key...to be able to deterAlthough it is very important mine if if a gem is natural or synthetic, and treated...deposits of alexandrite, cat's-eye and chrysoberyl in Brazil JacquesCassedanne, Cassedanne, D.Sc.,* Maurice...Fundiio, Fundão, 21,910, Rio de Janeiro, Janeiro, Brazil *Institute of Geosciences UFRJ-CNPq, Cidade Universitaria |  | | Report (issue) | | Zimbabwe. • Eight industrialized countries4 that mine little or no chromite have a significant (an estimated...chromium (in the form of ores, 3 A captive mine is a mine that produces solely for the parent company...profit-motive criteria would normally result in mine closure. Chromite supplies have been disrupted....mined-the platinum-mineral operation (Western Platinum mine) in the UG2 chromitite layer of the western Bushveld...Reef ores were extracted from the Western Platinum mine, yielding 6,656 kg of platinum-group elements, 1 |  | Mota-E-Silva, Jonas, Prichard, Hazel M., Suárez, Saioa, Ferreira Filho, Cesar F., Fisher, Peter C. (2016) Supergene Alteration of Platinum-Group Minerals and the Formation of Pd-Cu-O and Pd-I-O Compounds In the Limoeiro Ni-Cu-(PGE) Deposit, Brazil. The Canadian Mineralogist, 54 (3) 755-778 doi:10.3749/canmin.1500049 | Journal (article/letter/editorial) | | Pd-Cu-O AND Pd-I-O COMPOUNDS IN THE LIMOEIRO Ni-Cu-(PGE) DEPOSIT, BRAZIL JONAS MOTA-E-SILVA Votorantim Metais...05423-180, Brazil University of Brasilia, Geosciences Institute, Brası́lia/DF, 70900-970, Brazil HAZEL M...Geosciences Institute, Brası́lia/DF, 70900-970, Brazil PETER C. FISHER School of Earth and Ocean Science...weathering of platinum-group minerals (PGM) in the Limoeiro nickel-copper and platinum-group element [Ni-Cu-(PGE)]...over the base metal sulfide-rich parts of the Limoeiro primary ore. The mobility of Pt is very dependent |  | | Journal (article/letter/editorial) | | Magmatism in the Northern Borborema Province, Northeast Brazil: Tectonic Setting and Potential for Deposits Alanielson...Brasília, 70910-900 Brasília, Distrito Federal, Brazil ABSTRACT Mafic-ultramafic intrusions form a 32-km-long...Piranhas terrane in the Borborema Province, Northeast Brazil. The mafic-ultramafic intrusions consist of wehrlite...Aguablanca deposit in Spain (Tornos et al. 2001). In Brazil, the potential for exploration in orogenic belts...Transversal Domain of the Borborema Province (Limoeiro deposit; Santos et al. 2014; Mota-e-Silva et al |  | | Book | | BARTORELLI ::• . . .. MINERALS & PRECIOUS STONES OF BRAZIL Sponsored by: VALE MINISTER.IO DA CULTURA ©...Brasileira do Livro, SP, Brazil) Cornejo, Carlos .Minerals & precious stones of Brazil. Carlos Cornejo, Andrea...3. Minerals - Brazil 4. Minerals- Classification 5. Mineralogy 6. Mineralogy - Brazil - History 7. Precious...Precious stones - Brazil I. Bartorelli, Andrea. II. Title. 09-10025 Cover photograph: Crystal of brazilianite...Landmann. CDD-549 Indexes for systematic catalog: 1. Brazil: Minerals and precious stones: Mineralogy and gemology |  | | Journal (article/letter/editorial) | | ......................................... Rio Formoso rocks........... ................................42 J. C. BKANNER— GEOLOGY OP NORTHEAST COAST OF BRAZIL Page Geology along th e Great W estern railway...little is known of the geology of northeastern Brazil that no apology is needed for the obvious imperfections...Survey of the Empire (the Commissao Geologica do Brazil), and from subsequent trips to the interior of...equivalent to those of Bahia. C. F. H artt: “ Geology and Physical Geography of Brazil,” p. 445. T hese fossils |  | | Book | | born hills appear parallel to Mahagiri range due to mine-waste dumping. Unpaved roads serve the movement...The sky is gloomy throughout the day due to the mine and road dust. Social evils, crime, alcoholism,...education, counseling, and training. Making stringent mine-safety rules is not the solution—it has to be implemented...Ore Group Orissa Mining Corporation Limited Run of Mine Reconnaissance Permit tonnes tonnes per annum/day...significant in Canada, United States, Australia, Africa, Brazil, New Caledonia, Philippines, Indonesia, and the |  | | Journal (issue) | | crystal, 75 mm long, from the Cruzeiro mine, Minas Gérais, Brazil. See 'The location, geology and mineralogy...mineralogy of gem tourmalines in Brazil' on pp. 263-98 ISSN: 1355-4565 262 J. G e m m , 1996, 25, 4 ...location, geology and mineralogy of gem tourmalines in Brazil Jacques P. Cassedanne, Dr. Sc. *, and Maurice Roditi...Non-pegmatitic deposits of tourmaline include the Brumado mine (Bahia) which produces fine red uvite crystals and the...Tourmaline, pegmatite, eluvial deposits, gem mining, Brazil © Gemmological Association and Gem Testing Laboratory |  | Costa, Fabiana Pereira da, Fernandes, Jucielle Veras, Melo, Luiz Ronaldo Lisboa de, Rodrigues, Alisson Mendes, Menezes, Romualdo Rodrigues, Neves, Gelmires de Araújo (2021) The Potential for Natural Stones from Northeastern Brazil to Be Used in Civil Construction. Minerals, 11 (5) 440 doi:10.3390/min11050440 | Journal (article/letter/editorial) | | Potential for Natural Stones from Northeastern Brazil to Be Used in Civil Construction Fabiana Pereira...882, Bodocongó, Campina Grande, PB 58 429-900, Brazil; fabiana.costa@estudante.ufcg.edu.br (F.P.d.C.);...882, Bodocongó, Campina Grande, PB 58 429-900, Brazil Correspondence: alisson.mendes@professor.ufcg.edu...and marble) from mines located in northeastern Brazil were investigated to discover their potential for...Potential for Natural Stones from Northeastern Brazil to Be Used in Civil Construction. Minerals 2021 |  | | Journal (article/letter/editorial) | | Gerais, but encompasses also parts of the States of Bahia, EspõÂ rito Santo and Rio de Janeiro. The EBPP is...AntoÃnio Carlos 6277, 31 000 Belo Horizonte MG, Brazil the context of emerald mineralization, but seem...Argentina, (2) the north-eastern or Borborema in Brazil, and (3) the Eastern Brazilian. A description of...pegmatites of the north-eastern Pegmatite Province of Brazil and their geochemistry have been studied by Beurlen...also encompasses the southern part of the State of Bahia, the western margin of the State of EspõÂ rito Santo |  | | Journal (article/letter/editorial) | | In-situ LA-ICP-MS trace elemental analyzes of magnetite: The Tieshan skarn Fe-Cu deposit, eastern China—Minfang...Vol. 13, No. 2, 2017 Vol. 54, No. 5, 2017 Do magnetite layers in algoma-type banded iron formations (BIF)...Pd-Cu-O and Pd-I-O compounds in the Limoeiro Ni-Cu-(PGE) deposit, Brazil—Jonas Mota-E-Silva, Hazel M. Prichard...granite-related Buraco do Ouro gold mine, Cavalcante, central Brazil—J. Menez and N.F. Botelho 463 NATURAL...and distribution at the historic Alexander gold mine, Reefton goldfield, New Zealand—Kirstine R. Malloch |  | | Journal (article/letter/editorial) | | for the PGE-mineralized magmatism in Carajás, Brazil Eduardo Teixeira Mansur, Cesar Fonseca Ferreira...for the PGE-mineralized magmatism in Carajás, Brazil, LITHOS (2016), doi:10.1016/j.lithos.2016.09.036...constraints for the PGE-mineralized magmatism in Carajás, Brazil SC R IP Authors: Eduardo Teixeira Mansur¹ and...Universidade de Brasília, Brasília-DF, 70910-900, Brazil. email: etmansur@gmail.com 2 Instituto de Geociências...Universidade de Brasília, Brasília-DF, 70910-900, Brazil. email: cesarf@unb.br AC CE P TE D Corresponding |  | | Journal (article/letter/editorial) | | Pre-proofs The Luanga deposit, Carajás Mineral Province, Brazil: different styles of PGE mineralization hosted... The Luanga deposit, Carajás Mineral Province, Brazil: different styles of PGE mineralization hosted... The Luanga deposit, Carajás Mineral Province, Brazil: different styles of PGE mineralization hosted...70910-900, Brazil. ² VALE S/A, Av. Getulio Vargas, 671/13º, 30112-020, Belo Horizonte, MG, Brazil ³ Present...Desenvolvimento Tecnológico e Inovação (CRTI), Brazil. Furthermore, large PGM and PMM grains were analyzed |  | Ganade, Carlos E., Basei, Miguel A.S., Grandjean, Felipe C., Armstrong, Richard, Brito, Reinaldo S. (2017) Contrasting Archaean (2.85–2.68 Ga) TTGs from the Tróia Massif (NE-Brazil) and their geodynamic implications for flat to steep subduction transition. Precambrian Research, 297. 1-18 doi:10.1016/j.precamres.2017.05.007 | Journal (article/letter/editorial) | | Archaean (2.85-2.68 Ga) TTGs from the Tróia Massif (NE-Brazil) and their geodynamic implications for flat to...Archaean (2.85-2.68 Ga) TTGs from the Tróia Massif (NE-Brazil) and their geodynamic implications for flat to...Archaean (2.85-2.68 Ga) TTGs from the Tróia Massif (NE-Brazil) and their geodynamic implications for flat to...Geological Survey of Brazil, Rio de Janeiro-RJ, Brazil University of São Paulo, São Paulo, Brazil (3) Geological...Geological Survey of Brazil, Fortaleza, Brazil (4) Australian National University-ANU, Canberra, Australia (5) |  | | Report (issue) | | Costa Rica Guatemala Puerto Rico United States Brazil Colombia .. Tndo-China Japan Manchuria Netherlands...associated include platinum, gold, titaniferous magnetite, nickel and cobalt minerals, chrysotile asbestos...not usually amenable to concentration; where magnetite, however, has been formed by Fe2O3 substituting...account of the shattered nature of the ore-bodies, the mine having been previously developed by means of rises...being up to 60 ft. thick and up to 450 ft. long. The mine is reached by a II- mile extension of the main railway |  | | Journal (issue) | | FEATURE ARTICLES Gem Pegmatites of Minas Gerais, Brazil: The Tourmalines of the Araquai Districts Keit-h...tourlnaline thon anywhere else in the world-Minos Gerais, Brazil; the other with (I new locality for red tourmaline-Zcrmbia...bicolored tounnaline (12.90 ct), all from the Himalaya mine (California). Thestones were faceted by PalaInteri~ntional...his extensive travels in the mining regions of Brazil. Mr. Proctor received an M.S. in molecular biology...graduate gemologist. GEM PEGMATITES OF MINAS GERAIS, BRAZIL: THE TOURMALINES OF THE ARACUAI DISTRICTS By Keith |  | | Journal (article/letter/editorial) | | “Eagle/Kalatongke Type” Troc Sul DD. “Nebo-Babel (Limoeiro) Type” - elongated funnel, flared dyke Plg ...boat-shaped layered intrusion, as at Fazenda Mirabela (Brazil) —disseminated layer up to 100 m thick, mined for...Eagle deposit (Michigan, USA) and the Kalatongke mine (Inner Mongolia, China). (D) Subhorizontal tube...chonolith, named after Nebo-Babel (Canada) and Limoeiro (Brazil). (E) Subhorizontal ‘fat ski’ chonolith, named...bismuthotellurides and arsenides. The common co-occurrence of magnetite arises from the ability of mattes to also dissolve |
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