 | Souza Neto, João Adauto, Legrand, Jean Michel, Volfinger, Marcel, Pascal, Marie-Lola, Sonnet, Philippe (2008) W–Au skarns in the Neo-Proterozoic Seridó Mobile Belt, Borborema Province in northeastern Brazil: an overview with emphasis on the Bonfim deposit. Mineralium Deposita, 43 (2) 185-205 doi:10.1007/s00126-007-0155-1 | Journal (article/letter/editorial) | | Borborema Province in northeastern Brazil: an overview with emphasis on the Bonfim deposit João Adauto Souza Neto...located in the Borborema Province in northeastern Brazil and consists of a gneiss basement (Archean to Paleo-Proterozoic)...locally gold. Recently, the discovery of gold in the Bonfim tungsten skarn has resulted in a better understanding...Recife, Brazil e-mail: adauto@ufpe.br J. M. Legrand Departamento de Geologia, Universidade Federal do Rio...Rio Grande do Norte, Campus Universitário, Lagoa Nova, CEP 59.072-970 Natal, Brazil M. Volfinger : M.-L |  | | Journal (article/letter/editorial) | | mineralization at the Bonfim polymetallic skarn deposit, Seridó Mobile Belt, Borborema Province, Brazil Nayara Moreira...mineralization at the Bonfim polymetallic skarn deposit, Seridó Mobile Belt, Borborema Province, Brazil, Ore Geology...mineralization at the Bonfim polymetallic skarn deposit, Seridó Mobile Belt, Borborema Province, Brazil Nayara Moreira... da Arquitetura, s/n, 50740-550, Recife (PE), Brazil Corresponding author: Nayara Moreira de Mesquista...skarns in the Borborema Province, northeastern Brazil. The Bonfim W-Mo-Au-Bi-Te skarn occurs within a Neoproterozoic |  | | 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...Brasília, DF, Brazil 3. Programa de Pós-Graduação em Geologia, Universidade do Vale do Rio dos Sinos, Avenida |  | Vial, D.S., Abreu, G.C., Schubert, G., Ribeiro-Rodrigues, L.C. (2007) Smaller gold deposits in the Archean Rio das Velhas greenstone belt, Quadrilátero Ferrífero, Brazil. Ore Geology Reviews, 32 (3) 651-673 doi:10.1016/j.oregeorev.2005.01.004 | Journal (article/letter/editorial) | | deposits in the Archean Rio das Velhas greenstone belt, Quadrilátero Ferrífero, Brazil D.S. Vial a,⁎, G.C...c a CVRD—Companhia Vale do Rio Doce, BR 381, km 450, Santa Luzia, MG, Brazil Instituto de Geociências...Amparo à Pesquisa do Estado de São Paulo, Rua Major Solbiat, 226, Torrinha, SP, Brazil Fundação Educacional...BR-116, Km 526, Bairro das Graças, Caratinga, MG, Brazil b c Received 26 June 2003; accepted 2 January...occurrences in the Archean greenstone belt comprising the Rio das Velhas Supergroup. There are numerous small gold |  | | Report (issue) | | Iron Deposits of the Western Serra do Curral, Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL PAPER...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International...Iron Deposits of the Western Serra do Curral, Minas Gerais, Brazil By GEORGE C. SIMMONS GEOLOGY AND MINERAL...MINERAL RESOURCES OF PARTS OF MINAS GERAIS, BRAZIL GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-G Prepared...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International |  | | 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...de Geociências, Universidade Federal do Rio de Janeiro, Brazil. 2 - Departamento de Geologia, Instituto...Geociências, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil. 3 - Programa de Pós-Graduação |  | | Journal (article/letter/editorial) | | evolution of the Quadrilfitero Ferrifero, Minas Gerais, Brazil Farid Chemale Jr.a, Carlos A. RosiCreb and Issamu...Geologia, Universidadedo Vale do Rio dos Sines, 93023-000 Sa’oLeopoldo, RS, Brazil bCentro de Pesquisas M....Horizonte, MC, Brazil ‘Departamento de Geologia, UniversidadeFederal de Ouro Preto. Morro do Cruzeiro, 35400-000...35400-000 Ouro Preto, MG, Brazil Received February 3, 1992; revised version accepted March 24, 1993 ABSTRACT...nucleation of regional synclines in the overlying Rio das Velbas and Minas supergroups strata. Such regional |  | | Journal (issue) | | DRC|Yellow tourmaline from Mavuco, Mozambique|Tremolite from Tanzania|Tsavorite from Ethiopia|Black star...Articles 708 Coloured Stone Mining and Trade in Brazil: A Brief History and Current Status By Aurélien...Collection V. L. Villani photo p. 758 Cover Photo: Brazil is the source of a variety of coloured stones,...blood ruby, royal blue and cornflower sapphire, old mine/ Muzo green emerald, sunrise and sunset padparadscha...The source of much of this pyrite is the Huanzala mine in west-central Peru, which has probably yielded |  | | Journal (article/letter/editorial) | | deposit, Quadrilátero Ferrífero, Minas Gerais, Brazil Luiz Cláudio Ribeiro-Rodrigues a,⁎, Claudinei Gouveia...35 300-970, Brazil b Instituto de Geociências, Universidade de Brasília, Campus Asa Norte, Brasília-DF...Brasília-DF, 31270-901, Brazil c Institute of Mineralogy and Economic Geology, Aachen University of Technology...the Quadrilátero Ferrífero, Minas Gerais State, Brazil. The region constitutes an Archean granite–greenstone...composed of a basement complex (ca. 3.2 Ga), the Rio das Velhas Supergroup greenstone sequence, and related |  | | Report (issue) | | the Companhia de Pesquisa de Recursos Minerals of Brazil UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON...1. Geology—Brazil—Goias (State) 2. Geology, Stratigraphic—Pre-Cambrian. 3. Geology—Brazil—Quadilatero...the Companhia de Pesquisa de Recursos Minerals of Brazil Precambrian oceanic rocks, including ophiolitic...carbonate rock of 900-1,300-m.y. (million year) age (Brazil Dept. Nac. Produgao Min eral, 1971). The Araxa...character and is considered to be 620-900 m.y. old (Brazil Dept. Nac. Produ |  | | Journal (article/letter/editorial) | | schorl. Other mineral inclusions are fluorapatite, tremolite, and calcite. All Kamakanga emeralds contain at...The Kamakanga deposit is hosted by of the local mine. The majority of the studied samples appeared as...samples were obtained from the owner of the local mine. The majority of the studied samples appeared as...hematite, black spot or platelet or dendritic oxide, tremolite, fluorapatite, calcite, schorl Inclusions described... such as phlogopite, hematite, fluorapatite, tremolite, calcite, and schorl. All of the mineral inclusions |  | | Journal (article/letter/editorial) | | ARCHAEAN TERRANES A REVIEW 107 OF CENTRAL EASTERN BRAZIL: A. BERNASCONI* BP Minerals International Llmzted...1983. The Archaean terranes of central eastern Brazil: a review Precambrian Res., 23" 107--131. This...domains appear to be present in central eastern Brazil, i.e., the S~o Francisco Craton and the Jequi~...Ltda., Rua Martins Ferreira, 75, Botafogo, Rio de Janeiro, Brazil. 0301-9268/83/$03.00 © 1983 Elsevier...Publishers B.V 108 GREENSTONE LITHOS~RATIGRAPHIC l - rio H,pICUNU Z RliCRO DOs MACHA~ 5 ] GOUVEI/I PlUll |  | Giuliani, Gaston, Groat, Lee A., Marshall, Dan, Fallick, Anthony E., Branquet, Yannick (2019) Emerald Deposits: A Review and Enhanced Classification. Minerals, 9 (2) 105 doi:10.3390/min9020105 | Journal (article/letter/editorial) | | sub-types hosted in: (IA) Mafic-ultramafic rocks (Brazil, Zambia, Russia, and others); (IB) Sedimentary...sub-types hosted in: (IIA) Mafic-ultramafic rocks (Brazil, Austria); (IIB) Sedimentary rocks-black shale...ct. Insufu rough emerald extracted from the Kagem mine in 2015. Lastly, on the 2th of October, the remarkable...(“the lion elephant”) was extracted from the same mine [3]. Other giant crystals have been discovered in...emerald crystals was discovered in the Carnaíba mine, Brazil; the specimen weighed 341 kg with 1.7 million |  | 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) | | Complex and Ipueira-Medrado Sill, Bahia State, Brazil R. A. LORD,† Clean Environment Management Centre...Geociências, Universidade Federal da Bahia, Salvador, Brazil AND C. R. NEARY Formerly at Natural Environment...orthopyroxene relicts in an upper unit at the Cascabulhos mine. Microprobe studies of chromite-rich specimens from...11:35 AM Page 340 340 LORD ET AL. Introduction BRAZIL has ranked seventh in terms of world chromite production...contain the largest known reserves of chromite in Brazil, with potential reserves totaling 52 and 30 million |  | | Report (issue) | | Rocks of the Quadrilatero Ferrifero, Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL PAPER 641-B Prepared...the Departmento Nacional da Producao Mineral of Brazil under the auspices oj the Agency for International...Gerais, Brazil By NORMAN HERZ REGIONAL GEOLOGY OF THE QUADRILATERO FERRlFERO, MINAS GERAIS, BRAZIL GEOLOGICAL...the Departmento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International...map of the Quadrildtero Ferrffero, Minas Gerais, Brazil showing areas of gneissic and igneous rocks___ |  | | Report (issue) | | the Departmento National da Produ^ao Mineral of Brazil under the auspices of the Agency for International...Gerais, Brazil By NORMAN HERZ REGIONAL GEOLOGY OF THE QUADRILATERO FERRIFERO, MINAS GERAIS, BRAZIL GEOLOGICAL...the Departmento Nacional da Produqao Mineral of Brazil under the auspices of the Agency for International...Minas Gerais, Brazil. (Regional geology of the Quadrilatero Ferrifero, Minas Gerais, Brazil) (Geological...Petrology Brazil Quadrilatero do Ferro. 3. Geology, Stratigraphic Pre-Cambrian. I. Brazil. Departamento |  | | Journal (article/letter/editorial) | | com/loi/tigr20 Geology and Mineral Resources of Brazil: A Review a a Inacio De Medeiros Delgado , Augusto...Pesquisa de Recursos Minerals, Scdvador, Bahia, Brazil b US. Geological Survey, Denver, CO, 80225 Version...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...Pesquisa de Recursos Minerals, Scdvador, Bahia, Brazil AND CHARLES H. THORMAN US. Geological Survey, Denver |  | | Journal (article/letter/editorial) | | the octahedral and tetrahedral substitution, and do not substitute for Be or Al (Auriscchio et al., 1988)...of emerald occur in Colombia, Zambia, Pakistan, Brazil, Russia, Afghanistan, Zimbabwe and Madagascar....1986). Although the earlier Somerset mine and the later Cobra mine have been the main source of the emeralds...the 1960s, the Gravelotte Project was the largest mine of its type in the world, employing over 400 sorters...AFRICA Figure 3. The Leydsdorp Gravelotte Emerald Mine (GEM) showing the Cobra Pit and surroundings (after |  | | Journal (article/letter/editorial) | | margin of the São Francisco paleocontinent (SE Brazil): Constraints from metamafic–ultramafic rocks Marco...Geological Survey of Brazil – CPRM, Av Brazil 1731, Belo Horizonte 30140-002, Brazil Department of Mineral...The Campos Gerais Domain (CGD) in southeastern Brazil is an approximately 180 km 35 km area of Archean–Proterozoic...margin of the São Francisco paleocontinent (SE Brazil): Constraints from metamafic–ultramafic rocks,...Ga. The Campos Gerais Domain (CGD) in southeast Brazil is a 180 km 35 km area of Archean–Proterozoic |  | Verma, Sanjeet K., Oliveira, Elson P., Silva, Paola M., Moreno, Juan A., Amaral, Wagner S. (2017) Geochemistry of komatiites and basalts from the Rio das Velhas and Pitangui greenstone belts, São Francisco Craton, Brazil: Implications for the origin, evolution, and tectonic setting. Lithos, 284. 560-577 doi:10.1016/j.lithos.2017.04.024 | Journal (article/letter/editorial) | | basalts from the Rio das Velhas and Pitangui greenstone belts, São Francisco Craton, Brazil: Implications...basalts from the Rio das Velhas and Pitangui greenstone belts, São Francisco Craton, Brazil: Implications...basalts from the Rio das Velhas and Pitangui greenstone belts, São Francisco Craton, Brazil: Implications...of Campinas – UNICAMP, 13083-970 Campinas, SP, Brazil MA b NU a SC Sanjeet K. Vermaa,*, Elson P...1 ACCEPTED MANUSCRIPT ABSTRACT The Neoarchean Rio das Velhas and Pitangui greenstone belts are situated |  | | Journal (article/letter/editorial) | | STUDIES: THE EXAMPLE OF THE CONCEIÇÃO MINE, QUADRILÁTERO FERRÍFERO, BRAZIL CARLOS ALBERTO ROSIÈRE† Instituto...Federal de Minas Gerais, 31270-901 Belo Horizonte MG, Brazil AND FRANCISCO JAVIER RIOS Fluid Inclusion and...(CDTN-CNEN), Cx. Postal 941, 30123-970 Belo Horizonte MG, Brazil Abstract Petrographic and textural analysis combined...northeastern part of the Quadrilátero Ferrífero, Brazil, indicate a complex process of oxidation and mineralization...Ferrífero district, Minas Gerais, southeastern Brazil, are host to metamorphosed iron formations, referred |  | Hensler, Ana-Sophie, Hagemann, Steffen G., Brown, Philip E., Rosière, Carlos A. (2014) Using oxygen isotope chemistry to track hydrothermal processes and fluid sources in itabirite-hosted iron ore deposits in the Quadrilátero Ferrífero, Minas Gerais, Brazil. Mineralium Deposita, 49 (3) 293-311 doi:10.1007/s00126-013-0486-z | Journal (article/letter/editorial) | | deposits in the Quadrilátero Ferrífero, Minas Gerais, Brazil Ana-Sophie Hensler & Steffen G. Hagemann & Philip...Heidelberg 2013 Abstract The Quadrilátero Ferrífero, Brazil, is presently the largest accumulation of single...Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil and/or the infiltration of small volumes of isotopically...jaspilite-hosted iron ore of Carajás in the north of Brazil, the ore bodies of the Transvaal in South Africa...terranes and the greenstone belt sequence of the Rio das Velhas Supergroup, which are unconformably overlain |  | | Book | | BARTORELLI ::• . . .. MINERALS & PRECIOUS STONES OF BRAZIL Sponsored by: VALE MINISTER.IO DA CULTURA ©...Crystal of multicolored tourmaline (84 x 26 mm), Lavra do Sapo, Ferruginha, Conselheiro Pena, Minas Gerais...(Camara Brasileira do Livro, SP, Brazil) Cornejo, Carlos .Minerals & precious stones of Brazil. Carlos Cornejo...pedras preciosas do Brasil Bibliography 1. Gemology 2. Geology 3. Minerals - Brazil 4. Minerals- Classification... Mineralogy 6. Mineralogy - Brazil - History 7. Precious stones - Brazil I. Bartorelli, Andrea. II. Title |  | | Journal (issue) | | Decade of Change A New Era for the Historic Coscuez Mine Esmeraldas Santa Rosa: Our Wealth is Green Rediscovery...More Exquisite Emeralds Magnificent Old Mine Emeralds 143 Mine Visit A Visit to Colombia’s “Green” Emerald...Origins and Appellation President Clement Sabbagh, Brazil Vice Presidents Damien Cody, Australia Nirmal Kumar...Kumar Bardiya, India Treasurer Marcelo Ribeiro, Brazil Secretaries Bruce Bridges, USA Santpal Sinchawla...acquiring the majority stake in the iconic Coscuez mine in Colombia. The 2015 Symposium focused on the government’s |  | | Journal (article/letter/editorial) | | archaeologists, historians, and others [1]. Colombia, Brazil, and Zambia remain at the top of the list of major...of high-quality production are the deposits of Brazil, Russia, and Zambia, but smaller deposits with...within emerald have been found in emeralds from Brazil, Colombia, Russia, Madagascar, and Tanzania [45]...(near the pegmatite) or the talc-actinolite (-tremolite) zone (near the ultramafics) [15]. The solid inclusions...separate Indian emeralds from those of Colombia, Brazil, China (Yunnan), and Afghanistan (Panjshir), [5 |
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