 | 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)...Paleo-Proterozoic), a metasedimentary sequence (marble, quartzites, and schists), and the Brasiliano igneous...age). In this region, skarns occur within marble and at the marble–schist contact in the metasedimentary...locally gold. Recently, the discovery of gold in the Bonfim tungsten skarn has resulted in a better understanding |  | | Journal (article/letter/editorial) | | ore fluids in the Bonfim and Itajubatiba gold skarn deposits, Northeastern Brazil: a PIXE method study...Legrand Federal University of Rio Grande do Norte State, 59.072-970, Natal, Brazil CRSCM - CNRS, 45.071, Orl6ans...skarn deposits, in Northeastern Brazil: Itajubatiba (Au) and Bonfim (W-Au). The principal objective is...Seheid, 1981). The geological setting consists of marble, mica schist (Mesoproterozoie and Neoproterozoic...transitions), a metasomatic event trans-formed the marble and alkaline rocks into talc-silicate rocks in |  | | 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 (issue) | | INSTITUTE OF AMERICA Emeralds from Northeastern Brazil Diamantine: Coated Cubic Zirconia Precision Measurement...3 Emeralds from the Fazenda Bonfim Region, Rio Grande do Norte, Brazil J. C. (Hanco) Zwaan, Dorrit E...Polished emeralds from this deposit in northeastern Brazil, discovered in 2006, typically display a saturated...from Pakistan • Cat’s-eye emerald from Belmont, Brazil • Meteorite watches • Purple common opal from Mexico...of the publisher. About the Cover For decades, Brazil has been one of the world’s major sources of fine |  | | Book | | AV. PRESIDENTE WILSON, 231 - RIO DE JANEIRO MINES AND MINERALS IN BRAZIL --= ··--· ··- ·-·=- MINES... MINES AND MINERALS IN BRAZIL J OSIAS LEAO (ECONOMIC DIVISION - MINISTRY OF FOREIGN AFFAIRS) CENTRO DE...DE ESTUDOS ECONOMICOS RIO DE JANEIRO PREFACE This book was planned by Dr. Arno Kondei· - head of the...regarding water power and industry of electr·icity in Brazil were specially prepared at the Division of Waters............................ .... .. . 181 183 Marble .. ... ............................... . ..... |  | Baumgartner, R., Romer, R. L., Moritz, R., Sallet, R., Chiaradia, M. (2006) COLUMBITE-TANTALITE-BEARING GRANITIC PEGMATITES FROM THE SERIDO BELT, NORTHEASTERN BRAZIL: GENETIC CONSTRAINTS FROM U-Pb DATING AND Pb ISOTOPES. The Canadian Mineralogist, 44 (1) 69-86 doi:10.2113/gscanmin.44.1.69 | Journal (article/letter/editorial) | | GRANITIC PEGMATITES FROM THE SERIDÓ BELT, NORTHEASTERN BRAZIL: GENETIC CONSTRAINTS FROM U–Pb DATING AND Pb ISOTOPES...SALLET Universidade Federal do Rio Grande do Norte, 59072–920, Natal, Brazil Massimo CHIARADIA Department...located in the Borborema Province, northeastern Brazil, is well known for its pegmatites and granites...Brasiliano orogeny, Seridó Belt, Borborema Province, Brazil. Sommaire La ceinture Seridó, située dans la province...The Borborema tectonic Province of northeastern Brazil hosts one of the major granitic pegmatite provinces |  | | 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 |  | 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) | | 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...and related mafic rocks, discontinuous bodies of marble, and blocks of quartzofeldspathic material and...carbonate rock of 900-1,300-m.y. (million year) age (Brazil Dept. Nac. Produgao Min eral, 1971). The Araxa |  | | 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 |  | | Journal (article/letter/editorial) | | Min., Bol. 209, Rio de Janeiro 1964. DE MORAES, L.J.: Dep6sitos diamantlferos no norte do Estado de Minas...Bol. 8, Rio de Janeiro 1934. - - : Geologia Geral. - - Serv. Fore. Prod, Min., Bol. 19, Rio de ]aneiro...142, Rio de Janeiro 1968. PFLU~, R., SCHOBnENaAUS, C., & RENGES, F.: Contribuig~o ~ geotect6nica do Brasil...Bahia. - - Min. e Met,, 15, Rio de Janeiro 1951. SCHOgZENHAUS, C.: Sure,rio da geologia da Quadrieula Ibitiara...Ibitiara, Bahia, Sure,rio da geologia da Quadrieula de Paramirim, Bahia. - - SUDENE, Div. Geol., Bol |  | | Journal (issue) | | 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...emerged from another Peruvian deposit: the Quiruvilca mine in northern Peru. The as-mined specimens typically |  | 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 |  | 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 |  | | 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 |  | D'el-Rey Silva, Luiz José Homem, Dantas, Elton Luiz, Teixeira, João Batista Guimarães, Laux, Jorge Henrique, da Silva, Maria da Glória (2007) U–Pb and Sm–Nd geochronology of amphibolites from the Curaçá Belt, São Francisco Craton, Brazil: Tectonic implications. Gondwana Research, 12 (4) 454-467 doi:10.1016/j.gr.2006.11.008 | Journal (article/letter/editorial) | | amphibolites from the Curaçá Belt, São Francisco Craton, Brazil: Tectonic implications Luiz José Homem D'el-Rey...Brasília, Campus Darcy Ribeiro, Asa Norte, 70.910-900, Brasília — DF, Brazil Grupo de Metalogênese, Centro...40170-290, Bahia, Brazil d Serviço Geológico do Brasil (CPRM) - Av. Pasteur 404, Urca, 22290-240 Rio de Janeiro...Janeiro — RJ, Brazil b c Received 24 May 2006; received in revised form 29 July 2006; accepted 23 November...orogen in the São Francisco craton, northeastern Brazil, and comprises supracrustal rocks, gneisses of |  | | Journal (issue) | | quantitative chemical analyses to distinguish samples from Brazil, Nigeria, and Mozambique. 660 Geographic Origin...Micro-World, and Charts are not peerreviewed sections but do undergo technical and editorial review. Copyright...Caplan. The back cover shows emeralds from the Chivor mine in Colombia (3.90 ct faceted stone and 2.35 cm crystal)...gemological laboratories who perform this service, do not understand the complexities accompanying the...to use this platform to present what we know and do from our perspective. As one can see, this still |  | 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.: |  | | Journal (article/letter/editorial) | | State, Brazil JULIANA CHARÃO MARQUES† Instituto de Geociências, Universidade Federal do Rio Grande do Sul-UFRGS...Campus do Vale, Av. Bento Gonçalves 9500, Caixa Postal 15001, CEP 91501-970, Porto Alegre-RS, Brazil AND...Brasília-UnB, Campus Universitário, Asa Norte, Brasília-DF, CEP 70910-900, Brazil Abstract The Ipueira-Medrado...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 |  | | Report (issue) | | Development of the Quadrilatero Ferrifero Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL PAPER 641-A Prepared...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International...Development of the Quadrilatero Ferrifero Minas Gerais, Brazil By JOHN VAN N. DORR 2d REGIONAL GEOLOGY OF THE...THE QUADRILATERO FERRIFERO, MINAS GERAIS, BRAZIL GEOLOGICAL SURVEY PROFESSIONAL PAPER 641-A Prepared...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International |  | Vial, Diogenes Scipioni, DeWitt, Ed, Lobato, Lydia Maria, Thorman, Charles H. (2007) The geology of the Morro Velho gold deposit in the Archean Rio das Velhas greenstone belt, Quadrilátero Ferrífero, Brazil. Ore Geology Reviews, 32 (3) 511-542 doi:10.1016/j.oregeorev.2004.12.008 | Journal (article/letter/editorial) | | deposit in the Archean Rio das Velhas greenstone belt, Quadrilátero Ferrífero, Brazil Diogenes Scipioni Vial...a Companhia Vale do Rio Doce-CVRD, BR 381, Km 459, Santa Luzia, MG, 33010-970, Brazil United States Geological...6627, Pampulha, Belo Horizonte, MG, 31270-901, Brazil d CTGS Intl., Inc., 12464 W. 2nd Drive, Lakewood...region, Minas Gerais, Brazil, is hosted by rocks at the base of the Archean Rio das Velhas greenstone...and spatial association of the deposit with the Rio das Velhas orogeny, and location in close proximity |  | | Journal (article/letter/editorial) | | Supergroup carbonate rocks, Quadril itero Ferrffero, Brazil Marly Babinski a'b'*, Farid Chemale Jr. c, William... Caixa Postal 11049, CEP 05499, Sdo Paulo, SP, Brazil hlsotope Geochemistry Laboratory, Department of...de Geologia, Universidade do Vale do Rio dos Sinos, Sao Leopoldo, RS, Brazil Received 13 July 1993; revised...Quadril~itero Ferrffero (QF), Minas Gerais State, Brazil, an important economic iron district. This supergroup...most intensively investigated geological areas in Brazil, only one isotopic age has been determined on rocks |  | | 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 |  | | Book | | CONSTITUIÇÃO E EVOLUÇÃO 7 - COMPARTIMENTAÇÃO GEOLÓGICA DO BRASIL Yociteru Hasui 8 - QUADRO GERAL DA EVOLUÇÃO...BRASIL-ÁFRICA Yociteru Hasui 9 - ESTÁGIOS EVOLUTIVOS DO BRASIL NO FANEROZOICO Celso Dal Ré Carneiro, Fernando...Cratônicas 10 10a - CRÁTON AMAZÔNICO: PROVÍNCIAS RIO BRANCO E TAPAJÓS Yociteru Hasui 10b - SERRA DOS CARAJÁS...SERRA DO URUCUM Andrea Bartorelli 10d - MONTE RORAIMA E PICO DA NEBLINA, PONTOS CULMINANTES DO BRASIL...memorian) 11c - SERRA DO ESPINHAÇO E CHAPADA DIAMANTINA Fernando Flecha Alkmim 11d - BACIA DO SÃO FRANCISCO Pedro |  | | Journal (issue) | | diamondconference.ae. The panels cover ‘Why did diamonds do so well during COVID?’, ‘The new consumer and lab...minimal environmental and social impact, and 86% would do so for jewellery with materials having traceable... Tanzania, around the end of the 1960s, and the mine was active for about a decade. Since then, gem-quality...mentioned in the literature, in samples from Austria, Brazil, China, Egypt, India, South Africa and Ukraine...OF GEMMOLOGY, 38(2), 202 2 stones from Bahia, Brazil (Santiago 2015) and opaque to partially translucent |
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