 | 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...muscovite, specular hematite (hematite I), and octahedral hematite grains (hematite II) with remnants of |  | Cabral, A. R., Zeh, A., Galbiatti, H. F., Lehmann, B. (2015) LATE CAMBRIAN Au-Pd MINERALIZATION AND Fe ENRICHMENT IN THE ITABIRA DISTRICT, MINAS GERAIS, BRAZIL, AT 496 Ma: CONSTRAINTS FROM U-Pb MONAZITE DATING OF A JACUTINGA LODE. Economic Geology, 110 (1) 263-272 doi:10.2113/econgeo.110.1.263 | Journal (article/letter/editorial) | | MINERALIZATION AND Fe ENRICHMENT IN THE ITABIRA DISTRICT, MINAS GERAIS, BRAZIL, AT 496 MA: CONSTRAINTS FROM U-Pb...Lima-MG, Brazil Abstract Bonanza-style mineralization of palladiferous gold in specular hematite-rich lodes...century in the province that became known as Minas Gerais. The timing of this itabirite-hosted vein mineralization...events recorded in the Quadrilátero Ferrífero of Minas Gerais, the ~2.0 Ga Transamazonian event and the ~0...monazite grains recovered from the Conceição Fe-ore deposit within the Itabira district. The monazite analyses |  | 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 |  | | Journal (article/letter/editorial) | | Economic Geology Vol. 99, pp. 611–624 THE ORIGIN OF HEMATITE IN HIGH-GRADE IRON ORES BASED ON INFRARED MICROSCOPY...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...microscopy of highgrade (>65% Fe) hematite ore samples from the Conceição deposit, in the northeastern part |  | 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...sulfide-free, hematite-rich jacutinga mineralization of the Quadrilátero Ferrífero, central Minas Gerais, Brazil...mineralization, Itabira Iron Formation, Quadrilátero Ferrífero, Minas Gerais, Brazil. SOMMAIRE La hongshiite |  | 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)...<100 μm) → specular (coarse-grained, >100 μm) hematite. Laserfluorination oxygen isotope analyses of |  | 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...deposits of the Quadrilátero Ferrífero of Minas Gerais. The soft hematite orebody comprises 66 000 000 t at about...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 |  | Cabral, A. R., Lehmann, B., Tupinamba, M., Schlosser, S., Kwitko-Ribeiro, R., de Abreu, F. R. (2009) THE PLATINIFEROUS Au-Pd BELT OF MINAS GERAIS, BRAZIL, AND GENESIS OF ITS BOTRYOIDAL Pt-Pd AGGREGATES. Economic Geology, 104 (8) 1265-1276 doi:10.2113/gsecongeo.104.8.1265 | Journal (article/letter/editorial) | | COMMUNICATIONS THE PLATINIFEROUS Au-Pd BELT OF MINAS GERAIS, BRAZIL, AND GENESIS OF ITS BOTRYOIDAL Pt-Pd AGGREGATES...Xavier 524 s. A4016, 20550-050 Rio Janeiro-RJ, Brazil 4 Curt-Engelhorn-Zentrum 5 Centro Archäometrie...Luzia-MG, Brazil 6 Votorantim Metais, Praça Ramos de Azevedo 206, 01037-010 São Paulo-SP, Brazil Abstract...240-km-long, north-trending Au-Pd-Pt belt in Minas Gerais, Brazil, which hosts hydrothermal Pd-Pt−bearing...its southern part (Quadrilátero Ferrífero and Itabira district) and alluvial Pd-Pt-Au mineralization |  | 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) | | mineralisation associated with soft hematite ore, Gongo Soco deposit, Minas Gerais, Brazil: petrography, mineral chemistry...Talc mineralisation occurs as hematite–talc schist between soft hematite ore and dolomitic itabirite at...Quadrilátero Ferrífero of Minas Gerais, Brazil. The hematite–talc schist and soft hematite have a prominent Editorial...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 |  | 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...into high- (Fe >64%) and lowgrade (30%hematite ores. Based on their mineralogical composition... Unlike other mines in the QF, the Águas Claras Mine contained mainly high-grade ores hosted within dolomitic |  | 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 |  | | 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) | | Distribution of hard hematite ore at the Quadrilátero Ferrífero, Minas Gerais, Brazil and its possible genetic...genetic significance F. R . M . Pires The hematite deposits of Quadrilátero Ferrífero (QF) are hosted...hosted by the Proterozoic itabirites of the Itabira iron formation. These deposits are widely distributed...distributed at QF and include the hard hematite ore bodies. However, considerable variations in ore structure and...banding and lamination in the thin bedded, compact hematite ore, apparently reflects the original layering |  | | 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...northern Brazil is older. It contains the worlds' largest iron ore reserve (18 billion tons of hematite), and...metamorphosed Caraíba deposit, Curaçá Valley, Bahia, Brazil. This is an unusual, strongly deformed copper deposit |  | | Journal (article/letter/editorial) | | Doce, BR 381/km 450, 33040-900 Santa Luzia-MG, Brazil Mina do Gongo Soco, Companhia Vale do Rio Doce...Caixa Postal 22, 35970-000 Barão de Cocais-MG, Brazil b d Received 9 September 2005; accepted 6 March...October 2007 Abstract Gold nuggets from specular hematite-rich, sulphide-free, auriferous veins (jacutinga)...deposit in the Quadrilátero Ferrífero of Minas Gerais, Brazil, have inclusions of palladium arseno-antimonides...arseno-antimonides (isomertieite and mertieite-II) and hematite. Both isomertieite and mertieite-II are commonly |  | | Journal (article/letter/editorial) | | Cx. Postal 68505, Rio de Janeiro CEP 21941-972, Brazil; julianasegura@gmail.com (J.S.-S.); natashaslapa@gmail...pellet feed production. In general, these ores in Brazil are not particularly hard to crush and grind, but...designed and are in operation for this type of ore in Brazil; however, it is not yet clear which technologies...essential for manufacturing consumer goods globally. Brazil is the second-largest producer of iron ore globally...60% Fe content) or hematite ores, which prevail in the States of Pará and Minas Gerais, and the itabirite |  | | 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) | | 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...present only in the form of crystal relicts within hematite grains, it may lead to the selection of either...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 |  | Cabral, Alexandre Raphael, Tupinambá, Miguel, Zeh, Armin, Lehmann, Bernd, Wiedenbeck, Michael, Brauns, Michael, Kwitko-Ribeiro, Rogerio (2017) Platiniferous gold–tourmaline aggregates in the gold–palladium belt of Minas Gerais, Brazil: implications for regional boron metasomatism. Mineralogy and Petrology, 111 (6) 807-819 doi:10.1007/s00710-017-0496-0 | Journal (article/letter/editorial) | | aggregates in the gold–palladium belt of Minas Gerais, Brazil: implications for regional boron metasomatism...The platiniferous gold–palladium belt of Minas Gerais, Brazil, forms an approximately 240-km-long, roughly...Xavier 524 s. A4016, Rio Janeiro-RJ 20550-050, Brazil 4 Deutsches GeoForschungsZentrum GFZ, Telegrafenberg...Rodovia BR 381, km 450, Santa Luzia-MG 33040-900, Brazil tourmaline aggregates seem to be the ultimate...Metasomatism . PdPt . Gold–palladium belt . Minas Gerais . Brazil Introduction Auriferous lode deposits and |  | 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...temperature (86° ± 13°C) oxidized chloride brines within hematite-rich sediments, and precipitated as a consequence...= Hope Cove, 11 = Wadham Rocks, 12 = Loddiswell mine. Localities in the Lammermuir Hills (adapted from...situ occurrences Svoboda nad Úpou16,17 Gold in a hematite-rich gouge at the unconformity between Late Carboniferous-Early...to Au-Pd alloys from the Cauê iron mine, Itabira district, Brazil, was investigated by Olivo and Gammons |  | | 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 |  | Silveira Braga, Flávia Cristina, Santos, João Orestes Schneider, Rosière, Carlos Alberto, Rolim, Vassily K., Roberts, Malcolm P., Evans, Noreen J., Hagemann, Steffen G. (2020) Ediacaran-Cambrian far-field hydrothermal event in the southeast of the São Francisco Craton, Brazil: Evidence from zircon U-Pb SHRIMP, trace elements, Lu-Hf and oxygen isotopes. Lithos, 356. 105365 doi:10.1016/j.lithos.2020.105365 | Journal (article/letter/editorial) | | event in the southeast of the São Francisco Craton, Brazil: Evidence from zircon U-Pb SHRIMP, trace elements...event in the southeast of the São Francisco Craton, Brazil: Evidence from zircon U-Pb SHRIMP, trace elements...event in the southeast of the São Francisco Craton, Brazil: evidence from zircon U-Pb SHRIMP, trace elements...Geociências, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil b Faculdade de Engenharia, Universidade...Universidade do Estado de Minas Gerais, João Monlevade, MG, Brazil c Universidade do Estado do Amazonas |  | | Journal (volume) | | of Banded Iron Formation-Hosted High-Grade Hard Hematite Deposits—A Paleomagnetic Approach M. O. de Kock...Geochemistry of Banded Iron Formation-Hosted High-Grade Hematite-Martite Iron Ores J. Gutzmer, Benny C. Chisonga...Genesis of Giant Banded Iron Formation-Hosted Hematite Ore Deposits John G. McLellan and Nicholas H....Deposits in the Carajás Mineral Province, Pará State, Brazil Rosaline Figueiredo e Silva, Lydia Maria Lobato...for Banded Iron Formation-Related, High-Grade Hematite Iron Ore Marcus Flis 381 Chapter 16: High-Grade |  | Parker, Ceth, Wolf, Julie, Auler, Augusto, Barton, Hazel, Senko, John (2013) Microbial Reducibility of Fe(III) Phases Associated with the Genesis of Iron Ore Caves in the Iron Quadrangle, Minas Gerais, Brazil. Minerals, 3 (4) 395-411 doi:10.3390/min3040395 | Journal (article/letter/editorial) | | of Iron Ore Caves in the Iron Quadrangle, Minas Gerais, Brazil Ceth W. Parker 1, Julie A. Wolf 2, Augusto...Institute of Karst, Belo Horizonte, MG 30150-170, Brazil; E-Mail: aauler@gmail.com * Author to whom correspondence...November 2013 Abstract: The iron mining regions of Brazil contain thousands of “iron ore caves” (IOCs) that...(predominantly hematite) associated with banded iron formation (BIF), iron ore, and mine spoil. In all...regions of Brazil (primarily the Carajás region in Paráand the “Iron Quadrangle” region in Minas Gerais). This |
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