 | Olivo, G. R., Gauthier, M., Williams-Jones, A. E., Levesque, M. (2001) The Au-Pd Mineralization at the Conceicao Iron Mine, ItabiraDistrict, Southern Sao Francisco Craton, Brazil: An Example of aJacutinga-Type Deposit. Economic Geology, 96 (1) 61-74 doi:10.2113/gsecongeo.96.1.61 | Journal (article/letter/editorial) | | Mineralization at the Conceição Iron Mine, Itabira District, Southern São Francisco Craton, Brazil: An Example...Canada H3C 3P8 Abstract The Conceição mine, which is located in the Itabira district, southern São Francisco...an altered Lake Superior-type iron-formation. The mine sequence consists of three metamorphosed lithostratigraphic...conditions during the D1 phase of folding. The Conceição orebody consists of a single quartz vein surrounded...hematite grains (hematite II) with remnants of magnetite, and a finely laminated envelope around the quartz |  | | Journal (article/letter/editorial) | | STUDIES: THE EXAMPLE OF THE CONCEIÇÃO MINE, QUADRILÁTERO FERRÍFERO, BRAZIL CARLOS ALBERTO ROSIÈRE† Instituto... Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte MG, Brazil AND FRANCISCO JAVIER RIOS...(CDTN-CNEN), Cx. Postal 941, 30123-970 Belo Horizonte MG, Brazil Abstract Petrographic and textural analysis combined...from the Conceição deposit, in the northeastern part of the Quadrilátero Ferrífero, Brazil, indicate...fluids. The earliest mineralization formed massive magnetite-rich orebodies under relatively reducing conditions |  | Kwitko, R., Cabral, A. R., Lehmann, B., Laflamme, J.H. G., Cabri, L. J., Criddle, A. J., Galbiatti, H. F. (2002) HONGSHIITE, PtCu, FROM ITABIRITE-HOSTED Au Pd Pt MINERALIZATION (JACUTINGA), ITABIRA DISTRICT, MINAS GERAIS, BRAZIL. The Canadian Mineralogist, 40 (2) 711-723 doi:10.2113/gscanmin.40.2.711 | Journal (article/letter/editorial) | | Au–Pd–Pt MINERALIZATION (JACUTINGA), ITABIRA DISTRICT, MINAS GERAIS, BRAZIL ROGERIO KWITKO§ Centro de Desenvolvimento...Doce, BR 262/ km 296, 33030-970 Santa Luzia – MG, Brazil ALEXANDRE R. CABRAL§ AND BERND LEHMANN Institut...Sul, Companhia Vale do Rio Doce, 35900-900 Itabira-MG, Brazil ABSTRACT Hongshiite occurs associated with...mineralization of the Quadrilátero Ferrífero, central Minas Gerais, Brazil. Hongshiite occurs in grains up to about...octahedral precursor phase, interpreted to be magnetite. The magnetite could have acted as a local redox barrier |  | Oliveira, Lucilia Aparecida Ramos de, Rios, Francisco Javier, Rosière, Carlos Alberto, Wälle, Markus, Ortelli, Melissa, Kouzmanov, Kalin (2017) Nature and evolution of fluids associated with specularite-bearing Fe and Au-PGE (Jacutinga) mineralization during the Brasiliano orogeny in the eastern São Francisco Craton, Minas Gerais, Brazil. Ore Geology Reviews, 86. 130-153 doi:10.1016/j.oregeorev.2017.02.017 | Journal (article/letter/editorial) | | orogeny in the eastern São Francisco Craton, Minas Gerais, Brazil Lucilia Aparecida Ramos de Oliveira a,⇑...Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Minas Gerais 31270-901, Brazil Centro de Desenvolvimento...Tecnologia Nuclear, CDTN, 31270-901 Belo Horizonte, MG, Brazil c Institute of Geochemistry and Petrology (IGP)...aqueous-carbonic fluid from the Catas Altas and Itabira deposits. These Jacutinga-type fluids present a...Maria de Itabira. The high salinity of these brines (23.2–25.3 wt% NaCleqv) from the Itabira ore likely |  | 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...Heidelberg 2013 Abstract The Quadrilátero Ferrífero, Brazil, is presently the largest accumulation of single...highgrade iron ore bodies at, e.g. the Águas Claras, Conceição, Pau Branco and Pico deposits revealed different...from oldest to youngest: magnetite → martite (hematite pseudomorph after magnetite) → granoblastic (recrystallised)...Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil and/or the infiltration |  | Galbiatti, H.F., Fonseca, M.A., Pereira, M.C., Polônia, J.C. (2007) Structural control of Au–Pd mineralization (Jacutinga): An example from the Cauê Mine, Quadrilátero Ferrífero, Brazil. Ore Geology Reviews, 32 (3) 614-628 doi:10.1016/j.oregeorev.2005.03.020 | Journal (article/letter/editorial) | | (Jacutinga): An example from the Cauê Mine, Quadrilátero Ferrífero, Brazil H.F. Galbiatti a,⁎, M.A. Fonseca...Rio Doce, Minas de Itabira, Serra do Esmeril S/N, Mina Cauê, 35900-900 Itabira, MG, Brazil b Departamento...Federal de Ouro Preto. 35.400-000, Ouro Preto, MG, Brazil Received 1 December 2001; accepted 31 March 2005...Paleoproterozoic metasedimentary rocks in the Itabira District, a regional synclinorium with BIFs in...northeastern part of Quadrilatéro Ferrífero, Minas Gerais. Structural analysis reveals two important features |  | Cabral, A. R., Lehmann, B., Kwitko, R., Jones, R. D. (2002) Palladian gold and palladium arsenide–antimonide minerals from Gongo Soco iron ore mine, Quadrilátero Ferrífero, Minas Gerais, Brazil. Applied Earth Science, 111 (1) 74-80 doi:10.1179/aes.2002.111.1.74 | Journal (article/letter/editorial) | | from Gongo Soco iron ore mine, Quadrilátero Ferrífero, Minas Gerais, Brazil Downloaded by [RMIT University...deposit was one of the most famous gold mines in Brazil in the nineteenth century. The iron ore mining...ore deposits of the Quadrilátero Ferrífero of Minas Gerais. The soft hematite orebody comprises 66 000...was not only the first major underground gold mine in Brazil but also the most famous of the so-called jacutinga...is hosted by the Itabira Iron Formation of Harder and Chamberlin,18 i.e. the Itabira Group of Dorr,11 |  | Mendes, Mônica, Lobato, Lydia M., Kunzmann, Marcus, Halverson, Galen P., Rosière, Carlos A. (2017) Iron isotope and REE+Y composition of the Cauê banded iron formation and related iron ores of the Quadrilátero Ferrífero, Brazil. Mineralium Deposita, 52 (2) 159-180 doi:10.1007/s00126-016-0649-9 | Journal (article/letter/editorial) | | related iron ores of the Quadrilátero Ferrífero, Brazil Mônica Mendes 1,2 & Lydia M. Lobato 1 & Marcus...Springer-Verlag Berlin Heidelberg 2016 Abstract The Minas Supergroup banded iron formations (BIFs) of the...indicate hydrothermal iron contribution to the Minas basin. Iron isotope data and Ce anomalies suggest...Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil 2 Present address:...Desenvolvimento Mineral, Vale S.A., Santa Luzia, Minas Gerais 33.040-900, Brazil 3 Department of Earth and Planetary |  | Spier, Carlos Alberto, de Oliveira, Sonia Maria Barros, Rosière, Carlos Alberto, Ardisson, José Domingos (2008) Mineralogy and trace-element geochemistry of the high-grade iron ores of the Águas Claras Mine and comparison with the Capão Xavier and Tamanduá iron ore deposits, Quadrilátero Ferrífero, Brazil. Mineralium Deposita, 43 (2) 229-254 doi:10.1007/s00126-007-0157-z | Journal (article/letter/editorial) | | of the high-grade iron ores of the Águas Claras Mine and comparison with the Capão Xavier and Tamanduá...Tamanduá iron ore deposits, Quadrilátero Ferrífero, Brazil Carlos Alberto Spier & Sonia Maria Barros de Oliveira...Quadrilátero Ferrífero (QF), southeastern region of Brazil, where metamorphosed and heterogeneously deformed... Unlike other mines in the QF, the Águas Claras Mine contained mainly high-grade ores hosted within dolomitic...distinct types of high-grade ore occurred at the mine: soft and hard. The soft ore was the Editorial |  | | Journal (article/letter/editorial) | | 201-C, Salvador, 40170-290, Bahia, Brazil b Geological Survey of Brazil (CPRM)-Av. Pasteur, 404, Urca, Rio...Rio de Janeiro, 22290-240, Rio de Janeiro, Brazil Received 2 May 2004; accepted 1 May 2006 Available...(Imataca Complex), and others from Brazil (Quadrilátero Ferrífero, Itabira, and Guanhães) were part of the...mentioning that the Serra dos Carajás Basin in northern Brazil is older. It contains the worlds' largest iron...metamorphosed Caraíba deposit, Curaçá Valley, Bahia, Brazil. This is an unusual, strongly deformed copper deposit |  | | Journal (article/letter/editorial) | | hematite ore at the Quadrilátero Ferrífero, Minas Gerais, Brazil and its possible genetic significance F...are hosted by the Proterozoic itabirites of the Itabira iron formation. These deposits are widely distributed...texture present in the all ores is the ubiquitous magnetite porphyroclasts replacement by hematite. Quartz...syntectonic recrystallisation’. Three generations of magnetite and four of hematite (hematite-I being considered...deposits of high-grade, compact hematite of QF, Minas Gerais, Brazil, averaging 68%Fe and < 1%SiO2, totalling |  | Cabral, Alexandre Raphael, Wiedenbeck, Michael, Rios, Francisco Javier, Seabra Gomes, Antônio Augusto, Rocha Filho, Orlando Garcia, Jones, Richard David (2012) Talc mineralisation associated with soft hematite ore, Gongo Soco deposit, Minas Gerais, Brazil: petrography, mineral chemistry and boron-isotope composition of tourmaline. Mineralium Deposita, 47 (4) 411-424 doi:10.1007/s00126-011-0374-3 | Journal (article/letter/editorial) | | with soft hematite ore, Gongo Soco deposit, Minas Gerais, Brazil: petrography, mineral chemistry and boron-isotope...at Gongo Soco, Quadrilátero Ferrífero of Minas Gerais, Brazil. The hematite–talc schist and soft hematite...Nuclear (CDTN/CNEN), 30123-970, Belo Horizonte-MG, Brazil A. A. Seabra Gomes Jr Gerência de Exploração Mineral...Lima-MG, Brazil O. G. Rocha Filho Rua Ceará, 1338/701, 30150-311, Belo Horizonte-MG, Brazil R. D. Jones... Gongo Soco . Quadrilátero Ferrífero . Minas Gerais . Brazil Introduction The supergene leaching of |  | | Journal (article/letter/editorial) | | AND POTARITE FROM THE BOM SUCESSO STREAM, MINAS GERAIS, BRAZIL: COMPOSITIONAL ZONING AND ORIGIN MICHAEL...13506-900 Brazil ABSTRACT Platinum–Pd nuggets from the Bom Sucesso stream alluvium, Minas Gerais, Brazil...potarite, botryoidal nuggets, alluvium, Bom Sucesso, Brazil. SOMMAIRE Nous avons caractérisé des pépites alluvionnaires...provenant du ruisseau Bom Sucesso, dans l’état de Minas Gerais, au Brésil, par analyses à la microsonde électronique...occurs uncommonly in placer deposits in Minas Gerais (Brazil), Choco (Colombia), and Guyana in South |  | | Journal (article/letter/editorial) | | platinum from ouro preto-bearing mineralisation in Brazil Alexandre Raphael Cabral a,b,⁎, Bernd Lehmann a...that triggered two major gold rushes in Brazil (Minas Gerais and Serra Pelada). The auriferous mineralisations...mineralisations of Gongo Soco and Itabira, Minas Gerais, and Serra Pelada, Pará, have Pd–O-bearing, dark-coloured...ideally Pd17Se15, and sudovikovite, PtSe2, at Itabira; and, exclusively to Serra Pelada, empirical Pd9PtSe2...Ouro preto; Gongo Soco; Itabira; Serra Pelada; Brazil 1. Introduction Brazil had two major gold rushes |  | | Journal (article/letter/editorial) | | now operating in the production of iron ore in Brazil currently employ or are planning to employ some...concentration operations currently employed in Brazil and shows how ore mineralogy plays a fundamental...concentration of that stream. However, even if magnetite is present only in the form of crystal relicts...Avenue de Ligação, 3580, Nova Lima, 34000-000 MG, Brazil; A. C. Araujo (armando@demin.ufmg.br) is now with...Espírito Santo, 35, Belo Horizonte, 30160-039 MG, Brazil. Based on a contribution to the conference on Iron |  | Chaves, Alexandre de Oliveira, Ernst, Richard E., Söderlund, Ulf, Wang, Xinping, Naeraa, Tomas (2019) The 920–900 Ma Bahia-Gangila LIP of the São Francisco and Congo cratons and link with Dashigou-Chulan LIP of North China craton: New insights from U-Pb geochronology and geochemistry. Precambrian Research, 329. 124-137 doi:10.1016/j.precamres.2018.08.023 | Journal (article/letter/editorial) | | of Geosciences – Federal University of Minas Gerais - Brazil. alochaves@yahoo.com.br 2 – Department of...analyses on baddeleyite grains) on the Santa Maria de Itabira gabbroic intrusion. These ages suggest membership...Francisco (SF) and Congo cratons, spanning eastern Brazil and formerly adjacent central Africa. The SF/Congo...Paleomagnetic data from coastal Bahia mafic dykes in Brazil places the SF/Congo craton in moderate to high...Rifting at 920 Ma is recognized for the Araçuaí (Brazil) and West Congo (Africa) regions (Trompette, 1994 |  | Chapman, R. J., Leake, R. C., Bond, D. P. G., Stedra, V., Fairgrieve, B. (2009) Chemical and Mineralogical Signatures of Gold Formed in Oxidizing Chloride Hydrothermal Systems and their Significance within Populations of Placer Gold Grains Collected during Reconnaissance. Economic Geology, 104 (4) 563-585 doi:10.2113/gsecongeo.104.4.563 | Journal (article/letter/editorial) | | systems from several regions, including Australia, Brazil, Poland, and the United Kingdom. The distinctive...= Hope Cove, 11 = Wadham Rocks, 12 = Loddiswell mine. Localities in the Lammermuir Hills (adapted from...to Au-Pd alloys from the Cauê iron mine, Itabira district, Brazil, was investigated by Olivo and Gammons...precipitation of Au-Pd at the Conceição iron mine, Itabira district, Brazil, following high-temperature...-40 aAg = 5 x 10-6 B E C -60 Hematite D Magnetite Metal aCl- = 1 A= Au T= 85°C B=(Au+Pd) C=(Au+Ag) |  | | Journal (article/letter/editorial) | | Velhas Greenstone Belt, Quadrilátero Ferrífero, Brazil: Influence of Proterozoic Orogenies on Its Western...30310-310, MG, Brazil Instituto de Geociências, Universidade Federal de Minas Gerais, Av. Antônio Carlos...Campus Pampulha, Belo Horizonte 31270-910, MG, Brazil Correspondence: orivaldo.baltazar@hotmail.com (O...the Brasiliano São Francisco craton, Minas Gerais state, Brazil. It is composed of (i) Archean TTG granite-gneaissic...7000 km2 in the central and southern areas of Minas Gerais state. It constitutes the aggregation of Proterozoic |  | | Journal (issue) | | epidote deposits of the Capelinha Region, Minas Gerais, Brazil ......................................315...epidote on matrix, 4.4 cm, from Capelinha, Minas Gerais, Brazil. Gail and Jim Spann collection; Tom Spann...w w w. FineMineral.com Tourmaline Cruzeiro Mine, Brazil. 19.5 cm Fine Minerals International proudly...greenmountainminerals.com BA R I T E 12 X 8” Parkside Mine, Frizington Copeland, Cumbria, England, UK Photo...EPIDOTE DEPOSITS OF THE CAPELINHA REGION, MINAS GERAIS, BRAZIL Andrea Bartorelli1 Carlos Cornejo2 Mario |  | 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) | | Velhas greenstone belt, Quadrilátero Ferrífero, Brazil D.S. Vial a,⁎, G.C. Abreu b , G. Schubert a , L...Vale do Rio Doce, BR 381, km 450, Santa Luzia, MG, Brazil Instituto de Geociências da Universidade de São...São Paulo, Rua Major Solbiat, 226, Torrinha, SP, Brazil Fundação Educacional de Caratinga, Fazenda Experimental...BR-116, Km 526, Bairro das Graças, Caratinga, MG, Brazil b c Received 26 June 2003; accepted 2 January...small gold deposits of the QF are given, based on mine geological mapping and exploration developed in |  | | Journal (volume) | | Deposits in the Carajás Mineral Province, Pará State, Brazil Rosaline Figueiredo e Silva, Lydia Maria Lobato...educated Dutch geologist and permanent resident of Brazil with an M.Sc. degree in metamorphic geology, under...in the Espinhaço Range and has worked widely in Brazil and shield South America, mainly on exploration...geologic, mineral resources, and geotectonic map of Brazil, published in 4 sheets and in DVDGIS format with...the CSIRO in roles including science adviser for mine processing. He previously advised companies such |  | Ribeiro, Diniz, Moraes, Israel, Kwitko-Ribeiro, Rogerio, Braga, Deivid, Spier, Carlos, Santos, Pedro (2020) From Fresh Itabirites and Carbonates to Weathered Iron Ore: Mineral Composition, Density and Porosity of Different Fresh and Altered Rocks from the Quadrilátero Ferrífero, Brazil. Minerals, 11 (1) 29 doi:10.3390/min11010029 | Journal (article/letter/editorial) | | Altered Rocks from the Quadrilátero Ferrífero, Brazil Diniz Ribeiro 1, *, Israel Moraes 1 , Rogerio Kwitko-Ribeiro...Altered Rocks from the Quadrilátero Ferrífero, Brazil. Minerals 2021, 11, 29. https://doi.org/10.3390/...Escritório de Águas Claras, Nova Lima, MG 34.006-200, Brazil; israel.moraes@vale.com (I.M.); Deivid.braga@vale...Desenvolvimento Mineral, Santa Luzia, MG 33.040-900, Brazil; rogerio.kwitko@vale.com School of Earth and Environmental...spier@uq.edu.au Independent Consultant, Itabira, MG 35.900-360, Brazil; pedroapoloniodossantos@gmail.com Correspondence: |  | 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) | | Velhas greenstone belt, Quadrilátero Ferrífero, Brazil Diogenes Scipioni Vial a,⁎, Ed DeWitt b , Lydia...Doce-CVRD, BR 381, Km 459, Santa Luzia, MG, 33010-970, Brazil United States Geological Survey, Box 25046, Denver...Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte, MG, 31270-901, Brazil d CTGS...deposit, Quadrilátero Ferrífero region, Minas Gerais, Brazil, is hosted by rocks at the base of the Archean...Orogenic Archean gold; Quadrilátero Ferrífero; Brazil; Greenstone belt; Lapa seca 1. Introduction The |  | | Journal (article/letter/editorial) | | scale in the 1960s, such as those of Australia and Brazil, are huge and their lives should extend through...‘Mining Annual Review’, 2002) Country Australia Brazil Canada Chile China India Iran Kazak hstan M auritania...phases are SFCA (Ca silico-alumino-ferrite, F), magnetite (M), relict and recrystallised hematite (Hr and...The principal iron ore minerals (Table 2) are magnetite, hematite and goethite and the main gangue minerals...mainly in apatite or is adsorbed in goethite. Magnetite, when pure, has the highest iron content of all |  | | Journal (article/letter/editorial) | | Velhas greenstone belt, Quadrilátero Ferrífero, Brazil: A review of the setting of gold deposits O.F....Survey of Brazil, Av. Brasil 1731, Funcionários, Belo Horizonte, Minas Gerais, 30140-002, Brazil Received...central-southern part of the State of Minas Gerais, SE Brazil. The metavolcano–sedimentary rocks of the...the SE region of Brazil and the central-southern region of the State of Minas Gerais (Fig. 1). The Quadrilátero...deposits. From 1992 to 1996, the Geological Survey of Brazil (CPRM) carried out geological mapping of the greenstone |
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