 | | Report (issue) | | Deposits of the Western Serra do Curral, Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-G...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International...Curral, Minas Gerais, Brazil By GEORGE C. SIMMONS GEOLOGY AND MINERAL RESOURCES OF PARTS OF MINAS GERAIS...GERAIS, BRAZIL GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-G Prepared in cooperation with the Departamento...Departamento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International Development |  | | Report (volume) | | workshop held December 1-10,1986, in Belo Horizonte, Brazil, was hosted by the Institute Brasileiro de Mineragao...Quintas, Mineragao Morro Velho Club, Nova Lima, Brazil December 4,1986 1. 2. 3. 4. 5. Sergio C. Guedes...Quadrilatero Ferrffero, Minas Gerais, Brazil Workshop: Belo Horizonte, Brazil, December 1-10,1986 Sponsors:...Data Gold deposits related to greenstone belts in Brazil Deposit modeling workshop; Part A Excursions /...deposits related to greenstone belts in Brazil, Belo Horizonte, Brazil, 1986, by Charles H. Thorman and Eduardo |  | | Report (issue) | | Resources of the Pico de Itabirito District Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL Prepared...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International...District Minas Gerais, Brazil By ROBERTS M. WALLACE GEOLOGY AND MINERAL RESOURCES OF PARTS OF MINAS GERAIS...GERAIS, BRAZIL GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-F Prepared in cooperation with the Departamento...Departamento Nacional da Producao Mineral of Brazil under the au-spices of the Agency for International Development |  | Mendes, Julio Cezar, Ávila, Ciro Alexandre, Pereira, Ronaldo Mello, Heilbron, Mônica P.L., Moura, Candido A.V. (2006) 207Pb/206Pb-ages of zircons from syn-collisional I-type porphyritic granites of the central Ribeira belt, SE Brazil. Gondwana Research, 9 (3) 326-336 doi:10.1016/j.gr.2005.11.004 | Journal (article/letter/editorial) | | porphyritic granites of the central Ribeira belt, SE Brazil Julio Cezar Mendes a,*,1, Ciro Alexandre Ávila...central segment of the Ribeira belt, southeast Brazil, several foliated porphyritic granitic bodies intrude...the Maromba, Pedra Selada, Serra do Lagarto and Funil porphyritic I-type granites provide profound similarities...except for the distinct geochemical behavior of the Funil Granite, perhaps related to a different crustal...more than 1000 km along the southeastern coast of Brazil (Fig. 1). It developed as the result of the amalgamation |  | | Report (issue) | | and Ore Deposits of the Alegria District, Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-J...the Departamento National da Producao Mineral of Brazil under the auspices of the Agency for International...District, Minas Gerais, Brazil By CHARLES H. MAXWELL GEOLOGY AND MINERAL RESOURCES OF PARTS OF MINAS GERAIS...GERAIS, BRAZIL GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-J Prepared in cooperation with the Departamento...Departamento National da Producao Mineral of Brazil under the auspices of the Agency for International Development |  | | Report (issue) | | Development of the Quadrilatero Ferrifero Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL PAPER 641-A...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...GEOLOGY OF THE QUADRILATERO FERRIFERO, MINAS GERAIS, BRAZIL GEOLOGICAL SURVEY PROFESSIONAL PAPER 641-A...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International |  | | Report (issue) | | the Departmento National da Produ^ao Mineral of Brazil under the auspices of the Agency for International...Ferrifero, Minas Gerais, Brazil By NORMAN HERZ REGIONAL GEOLOGY OF THE QUADRILATERO FERRIFERO, MINAS GERAIS...GERAIS, BRAZIL GEOLOGICAL SURVEY PROFESSIONAL Prepared in cooperation with the Departmento Nacional da Produqao...Produqao Mineral of Brazil under the auspices of the Agency for International Development of the United...Ferrifero, Minas Gerais, Brazil. (Regional geology of the Quadrilatero Ferrifero, Minas Gerais, Brazil) (Geological |  | Maheshwari, Anil, Sial, Alcides N., Gaucher, Claudio, Bossi, Jorge, Bekker, Andrey, Ferreira, Valderez P., Romano, Antonio W. (2010) Global nature of the Paleoproterozoic Lomagundi carbon isotope excursion: A review of occurrences in Brazil, India, and Uruguay. Precambrian Research, 182 (4) 274-299 doi:10.1016/j.precamres.2010.06.017 | Journal (article/letter/editorial) | | carbon isotope excursion: A review of occurrences in Brazil, India, and Uruguay Anil Maheshwari a,∗ , Alcides...Department of Geology, UFPE, Recife, PE 50740-530, Brazil Departamento de Geología, Facultad de Ciencias...Geosciences, UFMG, Belo Horizonte, MG 30430-120, Brazil b c a r t i c l e i n f o Article history: Received... Keywords: Lomagundi excursion Carbon isotopes Brazil Uruguay India a b s t r a c t Positive carbon...Aravalli Supergroup (northwestern India), the Minas Supergroup (Brazil), and new sections of the Paso Severino |  | | Journal (article/letter/editorial) | | hematite ore at the Quadrilátero Ferrífero, Minas Gerais, Brazil and its possible genetic significance F...deposits of high-grade, compact hematite of QF, Minas Gerais, Brazil, averaging 68%Fe and < 1%SiO2, totalling...Fernandinho, Galinheiro, Mina do Pico e Sapecado (MBR mine properties). Apart from the initially estimated...Janeiro), Ilha do Fundão, Rio de Janeiro RJ 21949-900, Brazil (frpires@geologia.ufrj.br). Based on a contribution...hematite ore at the Quadrilátero Ferrífero, Minas Gerais, Brazil and its possible genetic significance 1 |  | | Journal (article/letter/editorial) | | Tourmaline-Bearing Gold Deposit' Passagemde Mariana (Brazil) ROlAnD FnE•SCI•I• A•D P• Abstract A facies...the "Quadril/ttero Ferrlfero," State of Minas Gerais, Brazil. Exploited sincethe end of the seventeenth...Stratigraphy Fleischer(1971) is shownin Table 1. The mine of Passagemde Mariana is situated7 The baseof the...Rocksin the Quadrilfitero Ferrlfero(MinasGerais,Brazil) Accordingto Dorr (1969)and SlightlyModifiedby...J. V. N. et al. (1969) Fm Lithology Itacolomi Minas Orthoquartzite, protoquartzite, conglomerate, grit |  | | Report (issue) | | Horizonte, Ibirite, and Macacos Quadrangles Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-D...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the International Cooperation...Quadrangles Minas Gerais, Brazil By JOEL B. POMERENE GEOLOGY AND MINERAL RESOURCES OF PARTS OF MINAS GERAIS...GERAIS, BRAZIL GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-D Prepared in cooperation with the Departamento...Departamento Nacional da Producao Mineral of Brazil under the auspices of the International Cooperation Administration |  | | Journal (issue) | | manager Famous mineral localities: the Broken Hill mine, Zam bia..............................................351 Famous mineral localities: the Cruzeiro mine, past and present ................................Warren A new find of crystallized rose quartz in Minas G e ra is ........................................B-2120 Schoten COVER: ELBAITE on quartz from Minas Gerais, Brazil. The crystal is 8.5 mm in width. Photo by...Kitwe, Zambia HISTORY The Broken Hill lead-zinc mine is located near the town of Kabwe, 140 km north |  | 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) | | gold 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...Craton (Brazil), where three major Proterozoic supracrustal units (the "Rio das Velhas", "Minas" and "Itacolomi"...characterize this event. Occurrence of muscovite, biotite and more scarcely sillimanite indicate that deformation...Main Mineralized Contact (located between the "Minas" and "Rio das Velhas" Supergroups), is found within...Introduction The Quadril~itero Ferrifero (Minas Gerais, Brazil), like most of the Archaean greenstone belts |  | 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) | | N. CP 941 CEP 30123-970, Belo Horizonte, Minas Gerais, Brazil 2 Instituto de Geociências, Universidade...3173 CEP 30140-970, Brasília, Distrito Federal, Brazil 3 Department of Subatomic and Radiation Physics...de Ouro Preto, CEP 35400-000 Ouro Preto, Minas Gerais, Brazil 5 Companhia Vale do Rio Doce, CVRD, BR 262-Km...P.O. Box 09 CEP 33010-970, Santa Luzia, Minas Gerais, Brazil ABSTRACT Infrared (IR) spectra in the OH...and hydrothermal deposits in the state of Minas Gerais, Brazil. In the magmatic environment, samples of |  | Coelho, Mariana Barroso, Trouw, Rudolph Allard Johannes, Ganade, Carlos E., Vinagre, Rodrigo, Mendes, Júlio Cezar, Sato, Kei (2017) Constraining timing and P-T conditions of continental collision and late overprinting in the Southern Brasília Orogen (SE-Brazil): U-Pb zircon ages and geothermobarometry of the Andrelândia Nappe System. Precambrian Research, 292. 194-215 doi:10.1016/j.precamres.2017.02.001 | Journal (article/letter/editorial) | | overprinting in the Southern Brasília Orogen (SE-Brazil): U-Pb zircon ages and geothermobarometry of the...overprinting in the Southern Brasília Orogen (SE-Brazil): U-Pb zircon ages and geothermobarometry of the...overprinting in the Southern Brasília Orogen (SE-Brazil): U-Pb zircon ages and geothermobarometry of the...Rio de Janeiro, Brazil 2. Serviço Geológico do Brasil – SBG/CPRM, Rio de Janeiro, Brazil 3. Universidade...Universidade de São Paulo – USP, São Paulo, Brazil ABSTRACT The Andrelândia Nappe System (ANS) is an important |  | | Report (issue) | | Monlevade and Rio Piracicaba Quadrangles, Minas Gerais Brazil GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-E...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International...Quadrangles, Minas Gerais Brazil By ROBERT G. REEVES GEOLOGY AND MINERAL RESOURCES OF PARTS OF MINAS GERAIS, BRAZIL...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International...____________ Itabirite. - _______________________ Minas Series_-_--_____--_______--___-__-_ Caraga Grou |  | | Report (issue) | | the Nova Lima and Rio Acima Quadrangles Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-A...the Departamento N acional da Producao Mineral of Brazil under the auspices of the International Cooperation...Quadrangles Minas Gerais, Brazil By JACOB E. GAIR GEOLOGY AND MINERAL RESOURCES OF PARTS OF MINAS GERAIS, BRAZIL...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the International Cooperation...rock (lapa 53 Gold 6 23 seca) 6 53 6 Morro Velho mine 26 Sericitic quartzite and schistose conglomerate6 |  | | Report (issue) | | Mineral Resources of the Barao de Cocais Area Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-H...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International...Area Minas Gerais, Brazil By GEORGE C. SIMMONS GEOLOGY AND MINERAL RESOURCES OF PARTS OF MINAS GERAIS...GERAIS, BRAZIL GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-H Prepared in cooperation with the Departamento...Departamento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International Development |  | | Journal (issue) | | and Anthony R. Kampf Gem Pegmatites of Minas Gerais, Brazil: Exploration, Occurrence, and Aquamarine...the northeastern section of the state of Minas Gemis, Brazil. The history of gem exploration and m i n...from the Pioneer mine in the Te6filo Otoni-Marambaia pegmatite district of Minas Gerais. As is common with...gem pegmatite regions of the 20th century: Minas Gerais, Brazil. With these articles, we hope to take you...what pegmatite gems have meant historically in Brazil and the production of one very important pegmatite |  | | Report (issue) | | Igneous Rocks of the Quadrilatero Ferrifero, Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL PAPER 641-B...the Departmento Nacional da Producao Mineral of Brazil under the auspices oj the Agency for International...Ferrifero, Minas Gerais, Brazil By NORMAN HERZ REGIONAL GEOLOGY OF THE QUADRILATERO FERRlFERO, MINAS GERAIS...GERAIS, BRAZIL GEOLOGICAL SURVEY PROFESSIONAL PAPER 641-B Prepared in cooperation with the Departmento...Departmento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International Development |  | | Report (issue) | | and Ore Deposits of the Itabira District Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL Prepared...and Ore Deposits of the Itabira District Minas Gerais, Brazil By JOHN VAN N. DORR 20 and ALUIZIO LICINIO...GEOLOGY AND MINERAL RESOURCES OF PARTS OF MINAS GERAIS, BRAZIL GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-C...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the International Cooperation..._____ Thickness and contacts..________________ Minas series ________________________________ Cara§a group |  | | Report (issue) | | Cover: Topaz, 3.5 cm tall Capao Mine, Ouro Preto, Minas Gerais, Brazil Max and Jon Sigerman collection...Occurrence MIKE MENZIES 22. Topaz from Utah's Maynard Mine RYAN BOWLING 26. Volodarsk-Volynski PETER LYCKBERG... 58. Zimbabwe Blue Topaz: St. Anne's Mine JAN KANIS 60. Brazil: The Land of Topaz DIETMAR SCHWARZ 68...locality in Brazil (Sinkankas, 1981). Two gemmy crystals from the Te6filo Ot6ni region in Minas Gerais, Brazil...three huge specimens from Te6filo Ot6ni, Minas Gerais, Brazil, that are housed at the Smithsonian Institution |  | | Report (issue) | | Campo Dom Bosco, and Ouro Branco Quadrangles Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-B...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the International Cooperation...Quadrangles Minas Gerais, Brazil By ROBERT F. JOHNSON GEOLOGY AND MINERAL RESOURCES OF PARTS OF MINAS GERAIS...GERAIS, BRAZIL GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-B Prepared in cooperation with the Departamento...Departamento National da Producao Mineral of Brazil under the auspices of the International Cooperation Administration |  | Caxito, Fabrício de Andrade, Halverson, Galen P., Uhlein, Alexandre, Stevenson, Ross, Gonçalves Dias, Tatiana, Uhlein, Gabriel J. (2012) Marinoan glaciation in east central Brazil. Precambrian Research, 200. 38-58 doi:10.1016/j.precamres.2012.01.005 | Journal (article/letter/editorial) | | com/locate/precamres Review Marinoan glaciation in east central Brazil Fabrício de Andrade Caxito a,b,∗ , Galen P. Halverson...Federal de Minas Gerais, Av. Antônio Carlos 6627, CEP 31270-901, Belo Horizonte, MG, Brazil Département...of a Neoproterozoic glaciation in east central Brazil are represented by thin diamictite layers (Jequitaí...deposited after the Marinoan glaciation in east central Brazil. © 2012 Elsevier B.V. All rights reserved. Contents...of the Neoproterozoic glaciation in east central Brazil . . . . . . . . . . . . . . . . . . . . . . . |  | | Report (issue) | | Mineral Resources of the Congonhas District Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL PAPER 290...the Departamento N acional da Produfao Mineral of Brazil under the auspices of the International Cooperation...Mineral Resources of the Congonhas District Minas Gerais, Brazil By PHILIP W. GUILD GEOLOGICAL SURVEY ...Departamento N acional da Produ~ao M,ineral of Brazil under the auspices of the International Cooperation...__________________ _ Iron region of central Minas Gerais _______________ _ Congonhas district_ ________________________ |
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