 | 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) | | ores of the Águas Claras Mine and comparison with the Capão Xavier and Tamanduá iron ore deposits, Quadrilátero...Quadrilátero Ferrífero, Brazil Carlos Alberto Spier & Sonia Maria Barros de Oliveira & Carlos Alberto Rosière...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 |  | | 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...widely distributed at QF and include the hard hematite ore bodies. However, considerable variations in...banding and lamination in the thin bedded, compact hematite ore, apparently reflects the original layering...completely replaced itabirite. The structure of the hematite ore deposits varies from almond shaped, rootless |  | | 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... MBR SA, Avenue de Ligação, 3580, Nova Lima, 34000-000 MG, Brazil; A. C. Araujo (armando@demin.ufmg.br)...Espírito Santo, 35, Belo Horizonte, 30160-039 MG, Brazil. Based on a contribution to the conference on Iron |  | | Journal (article/letter/editorial) | | Imaging iron ore from the Quadrilátero Ferrífero (Brazil) using geophysical inversion and drill hole data...20921-400, Brazil Vale, Departamento de Exploração de Ferrosos, Avenida de Ligação, 3580, Nova Lima, MG 34000-000...34000-000, Brazil a r t i c l e i n f o Article history: Received 29 November 2013 Received in revised...Iron-ore reserve Brazil a b s t r a c t The Quadrilátero Ferrífero in southeastern Brazil hosts one of the...QF is located in central Minas Gerais state, southeastern region of Brazil (Dorr, 1965). The QF has a |  | Cabral, Alexandre Raphael, Lehmann, Bernd, Gomes, Antônio Augusto Seabra, Pašava, Jan (2016) Episodic negative anomalies of cerium at the depositional onset of the 2.65-Ga Itabira iron formation, Quadrilátero Ferrífero of Minas Gerais, Brazil. Precambrian Research, 276. 101-109 doi:10.1016/j.precamres.2016.01.031 | Journal (article/letter/editorial) | | iron formation, Quadrilátero Ferrı́fero of Minas Gerais, Brazil Author: Alexandre Raphael Cabral Bernd Lehmann...iron formation, Quadrilátero Ferrífero of Minas Gerais, Brazil, Precambrian Research (2016), http://dx...formation, Quadrilátero 12 Ferrífero of Minas Gerais, Brazil ip t 10 cr 13 Alexandre Raphael Cabral...Clausthal-Zellerfeld, Germany b Geo-T, 34000-000 Nova Lima-MG, Brazil c Czech Geological Survey, 152 00 Praha...Itabirite, in the Quadrilátero Ferrífero 26 of Minas Gerais, Brazil. The magnetite bands have low (non-crustal) |  | | Journal (article/letter/editorial) | | economic targets as they are near surface and easy to mine. The relatively high density of iron detritals,...area surrounding the Mount Whaleback microplaty hematite ore deposit – constraints on fluid dynamics before...area surrounding the Mount Whaleback microplaty hematite deposit. These veining events can be directly...from feeder or effluent fluids from microplaty hematite ore formation. Supergene iron ore and disorder...metamorphic BIF from Quadrilátero Ferrífero (QF), Brazil, shows several weathered facies. Strong linking |  | | Journal (article/letter/editorial) | | iron ore in the Quadrilátero Ferrífero, Minas Gerais, Brazil C. A. Spier 1 & A. Levett 1 & C. A. Rosière...Antônio Carlos 6627, Belo Horizonte, Minas Gerais 31270-901, Brazil defined the ferruginous duricrust...of itabirite in the Quadrilátero Ferrífero (QF), Minas GeraisBrazil, as canga (derived from the indigenous...across the globe (e.g. QF and Carajás regions, Brazil; Nimba and Simandou ranges; Guinea; and the Hamersley...and reduce mine waste (e.g. Hamersley Province, Australia; Quadrilátero Ferrífero, Brazil). In some mining |  | | Journal (article/letter/editorial) | | iron ore from the Quadrilátero Ferrífero, Minas Gerais, Brazil C.A. Spier, A. Kumar, A.P.L. Nunes PII:...iron ore from the Quadrilátero Ferrífero, Minas Gerais, Brazil, Ore Geology Reviews (2020), doi: https://doi...iron ore from the Quadrilátero Ferrífero, Minas Gerais, Brazil Spier, C. A.1, Kumar, A.1 and Nunes, A...Tomé de Souza 1065, Belo Horizonte, Minas Gerais, 30140-131, Brazil * Corresponding author, e-mail: c...waters. The Quadrilátero Ferrífero (QF) of Minas Gerais, Brazil, is worldly known for its tier 1 iron ore |  | 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...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...9‰ and is up to 11‰ depleted in 18O relative to hematite of the host itabirite. During the modification |  | Martínez Dopico, Carmen I., Lana, Cristiano, Moreira, Hugo S., Cassino, Lucas F., Alkmim, Fernando F. (2017) U–Pb ages and Hf-isotope data of detrital zircons from the late Neoarchean-Paleoproterozoic Minas Basin, SE Brazil. Precambrian Research, 291. 143-161 doi:10.1016/j.precamres.2017.01.026 | Journal (article/letter/editorial) | | from the late NeoarcheanPaleoproterozoic Minas Basin, SE Brazil Carmen I. Martínez Dopico, Cristiano Lana...from the late Neoarchean-Paleoproterozoic Minas Basin, SE Brazil, Precambrian Research (2017), doi: http://dx...from the late NeoarcheanPaleoproterozoic Minas Basin, SE Brazil a1* a b Carmen I. MARTÍNEZ DOPICO ,...Geologia, Escola de Minas, Universidade Federal de Ouro Preto, Ouro Preto, MG 35400-000, Brazil. b School of...Neoarchean to Paleoproterozoic Minas Basin (Minas Supergroup, SE of Brazil) is one of the best-studied basins |  | Orberger, Beate, Wagner, Christiane, Tudryn, Alina, Baptiste, Benoît, Wirth, Richard, Morgan, Rachael, Miska, Serge (2017) Iron (oxy)hydroxide and hematite micro- to nano-inclusions in diagenetic dolomite from a 2.4 Ga banded iron formation (Minas Gerais, Brazil) European Journal of Mineralogy, 29 (6) 971-983 doi:10.1127/ejm/2017/0029-2679 | Journal (article/letter/editorial) | | online 22 September 2017 Iron (oxy)hydroxide and hematite micro- to nano-inclusions in diagenetic dolomite...dolomite from a 2.4 Ga banded iron formation (Minas Gerais, Brazil) BEATE ORBERGER1,*, CHRISTIANE WAGNER2,...carbonate banded iron formation of the Aguas Claras mine, from the transition of the Caûe to the Gandarela...Gandarela Formation (2.4 Ga, Itabira Group, Brazil), is composed of porous and microsparitic dolomite, quartz...identified the inclusions in porous dolomite as hematite and minor goethite and/or ferrihydrite, whereas |  | | 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 |  | | 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...by infrared microscopy of highgrade (>65% Fe) hematite ore samples from the Conceição deposit, in the |  | 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 |  | 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/...Management, Escritório de Águas Claras, Nova Lima, MG 34.006-200, Brazil; israel.moraes@vale.com (I.M.); Deivid...Desenvolvimento Mineral, Santa Luzia, MG 33.040-900, Brazil; rogerio.kwitko@vale.com School of Earth and Environmental...Independent Consultant, Itabira, MG 35.900-360, Brazil; pedroapoloniodossantos@gmail.com Correspondence: |  | Soh Tamehe, Landry, Chongtao, Wei, Ganno, Sylvestre, Simon, Shaamu Jeremia, Kouankap Nono, Gus Djibril, Nzenti, Jean Paul, Lemdjou, Yanick Brice, Lin, Naing Htun (2019) Geology of the Gouap iron deposit, Congo craton, southern Cameroon: Implications for iron ore exploration. Ore Geology Reviews, 107. 1097-1128 doi:10.1016/j.oregeorev.2019.03.034 | Journal (article/letter/editorial) | | abundant structural studies of well-documented BIFs in Brazil (e.g., Hippert et al., 2001; Rosière et al., 2001...Mbalam iron deposit contains indicated high grade hematite resources of 230.9 Mt @ 56.5% Fe and inferred...in these bands is mostly made up of magnetite, hematite, and/or martitized magnetite. Based on the major...recognized within the Ntem Complex: the BIF-hosted hematite deposit (Mbalam and Nkout deposits), and the BIF-hosted...lithofacies are hematite−martite BIF, magnetite−hematite BIF and amphibole BIF. The hematite−martite BIF |  | Chombong, N. N., Suh, C. E., Lehmann, B., Vishiti, A., Ilouga, D. C., Shemang, E. M., Tantoh, B. S., Kedia, A. C. (2017) Host rock geochemistry, texture and chemical composition of magnetite in iron ore in the Neoarchaean Nyong unit in southern Cameroon. Applied Earth Science, 126 (3) 129-145 doi:10.1080/03717453.2017.1345507 | Journal (article/letter/editorial) | | alteration, F Hem = fine grained hematite, K Hem = altered clayey hematite rich in potassium, Lm = limonite...typical BIF from Cameroon (Ilouga et al. 2013), Brazil (Spier et al. 2008), South Africa (Viehmann et...Mbalam BIF, Cameroon (Ilouga et al. 2013); Minas Gerais BIF, Brazil (Spier et al. 2008); BIF from South Africa...formations in the Quadrilátero Ferrífero of Minas Gerais, Brazil and enhances the correlation of Archaean...iron formation, Quadrilátero Ferrífero of Minas Gerais, Brazil, at 2.65Ga: depositional U-Pb age of zircon |  | | Journal (issue) | | Natural-Color Green Diamonds Iridescence in “Rainbow” Hematite DNA Identification of Japanese P. Fucata Pearls...pg. 9 28 Iridescence in Metamorphic “Rainbow” Hematite Xiayang Lin, Peter J. Heaney, and Jeffrey E. Post...iridescence observed in “rainbow” hematite from Minas Gerais, Brazil. 40 DNA Techniques Applied to the...of iridescence in metamorphic “rainbow” hematite from Brazil. The authors use electron microscopy, atomic...iridescence: oriented arrays of spindle-shaped hematite nanocrystals that form diffraction grating. In |  | | Book | | Alkmim Editors São Francisco Craton, Eastern Brazil Tectonic Genealogy of a Miniature Continent Regional...Alkmim • Editors São Francisco Craton, Eastern Brazil Tectonic Genealogy of a Miniature Continent 123...Janeiro Maracanã, Rio de Janeiro Brazil Fernando F. Alkmim Escola de Minas Universidade Federal de Ouro...Preto Ouro Preto Brazil Umberto G. Cordani Universidade de São Paulo São Paulo Brazil ISSN 2364-6438...significant contributor to the mining industry in Brazil. This book provides a state of knowledge overview |  | Ganno, Sylvestre, Tsozué, Désiré, Kouankap Nono, Gus Djibril, Tchouatcha, Milan Stafford, Ngnotué, Timoléon, Gamgne Takam, Ruth, Nzenti, Jean Paul (2018) Geochemical Constraints on the Origin of Banded Iron Formation-Hosted Iron Ore from the Archaean Ntem Complex (Congo Craton) in the Meyomessi Area, Southern Cameroon. Resource Geology, 68 (3) 287-302 doi:10.1111/rge.12172 | Journal (article/letter/editorial) | | in South Africa and the Urucum district ore in Brazil are the wellknown examples of supergene-enriched...schist belt in India and the Carajas district in Brazil are the examples of supergene-modified hydrothermal...partly filled by goethite. Indeed, goethite and hematite are the main products of magnetite weathering...2007). The absence of hematite in thin sections may be due to the fact that hematite is dissolved under...concentrated both as residual (hematite, magnetite) and newly formed minerals (hematite, maghemite, and goethite) |  | | Conference Proceedings (Volume) | | Cover photograph: View of the Aitik open pit copper mine in the very north of Sweden. Mining operations started...Ahola Occurrence of gold (electrum) in the Lousal mine, Iberian pyrite belt, Portugal ..................chemical constraints on the genesis of the largest hematite ore body in the Hamersley Province, Australia...Quadrilátero Ferrífero, Brazil ............................ 719 Tatiana A. Fernandes Lima, Carlos A. Rosière...the Esperança deposit, Quadrilátero Ferrífero, Brazil – first results .............................. |  | | Journal (article/letter/editorial) | | formations throughout the world, notably in Australia, Brazil, and South Africa, show evidence of hypogene (≥...along high-angle faults. At the Hibbing Taconite Mine, hydrothermal fluids oxidized iron carbonates and...concentrate. Hydrothermal oxidation at Hibbing Taconite Mine is overprinted by later, relatively minor supergene...which locally dissolved quartz. At the Fayal Reserve Mine, widespread silicate and carbonate gangue dissolution...Proterozoic terranes, most importantly in Australia, Brazil, South Africa, Ukraine, India, Canada, and the |  | | Journal (article/letter/editorial) | | high-grade iron ores are mainly composed of martite and hematite, and attributed to hypogene process and supergene...Wan et al., 2016; Zhao and Zhai, 2013). minor hematite; and gangue minerals of quartz, garnet, cummingtonite...cummingtonite, chlorite and calcite; iv) high-grade hematite ore with ore mineral of specularite; and gangue...in Liaodong Peninsula (north–east China). Terra Nova 16, 75–80. Figueiredo e Silva, R.C., Hagemann, S...jaspilite–hosted iron ore deposits, Carajás Mineral Province, Brazil. Econ. Geol. 108, 739–779. Frost, B.R., Tracy, |  | | Book | | iron ore production, followed by Australia and Brazil with their combined production of 919 Mt in 2012...2013 being about 820 Mt/a, largely from Australia, Brazil, South Africa, Canada, and India. The three largest...largest iron ore producers in the world are Vale in Brazil and Rio Tinto and BHP Billiton with operations...3000 2500 World iron ore production Australia Brazil China (estimated) 2000 1500 1000 500 0 1990 1995...ore and iron content, followed very closely by Brazil with slightly higher in situ iron grades. Russia |  | | Book | | Geosciences Institute University of São Paulo São Paulo Brazil Pedro Oyhantçabal Departamento de Geodinámica Interna...recognized similarities in the ‘old granites’ of Brazil and southern Africa. On the other hand, du Toit...‘Brazilian system’ defined by Alcide d’Orbigny in Brazil (Beaumont 1844), arguably corresponding to the...geochronological data of the Precambrian basement of southern Brazil, Uruguay and Argentina were reported by Hart (1966)...and geochemical data of the Nico Pérez Terrane in Brazil and Uruguay in order to constrain its regional |
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