 | Cabral, A. R., Lehmann, B., Galbiatti, H. F., Rocha Filho, O. G. (2006) Evidence for metre-scale variations in hematite composition within the Palaeoproterozoic Itabira Iron Formation, Minas Gerais, Brazil. Mineralogical Magazine, 70 (5) 591-602 doi:10.1180/0026461067050352 | Journal (article/letter/editorial) | | within the Palaeoproterozoic Itabira Iron Formation, Minas Gerais, Brazil A. R. CABRAL1,*, B. LEHMANN2...Germany 3 Companhia Vale do Rio Doce, Itabira MG, 35900-900, Brazil 4 Companhia Vale do Rio Doce, Fazenda...Fazenda Gongo Soco, Barão de Cocais MG, 35970-000, Brazil 2 ABSTR ACT Hematite is a mineral the chemical...deposits, Cauê (Itabira district) and Gongo Soco, in the Palaeoproterozoic Itabira Iron Formation, Quadrilátero...Quadrilátero Ferrı́fero of Minas Gerais, Brazil, has revealed distinct variations in chemical composition |  | | Report (issue) | | Geology and Ore Deposits of the Itabira District Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL... Geology and Ore Deposits of the Itabira District Minas Gerais, Brazil By JOHN VAN N. DORR 20 and ALUIZIO...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...rocks_____________________________ Geology of the Itabira district__-___-_________________ Stratigraphy. |  | Cabral, A. R., Lehmann, B., Kwitko, R., Galbiatti, H. F., Pereira, M. C. (2002) Palladseite and its oxidation: evidence from Au-Pd vein-type mineralization (jacutinga), Cauê iron-ore mine, Quadrilátero Ferrífero, Minas Gerais, Brazil. Mineralogical Magazine, 66 (2) 327-336 doi:10.1180/0026461026620033 | Journal (article/letter/editorial) | | iron-ore mine, Quadrila¤tero Ferr|¤ fero, Minas Gerais, Brazil A. R. CABRAL1,*, B. LEHMANN1, R. KWITKO2...Luzia-MG, Brazil 3 Diretoria de Metais Nobres, Companhia Vale do Rio Doce, 35900-900 Itabira-MG, Brazil ABSTR...the main tectonic foliation of the wallrock (itabirite). The feature of fracture infill and the Se-Sb-As-Hg-Cu-Ag... Cauê iron-ore mine, Itabira Iron Formation, Quadrilátero Ferrı́fero, Brazil. Introduction PALLADSEITE...residual concentrates from gold washings from Itabira (Davis et al., 1977). It is an accessory component |  | 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) | | of the 2.65-Ga Itabira iron formation, Quadrilátero Ferrı́fero of Minas Gerais, Brazil Author: Alexandre...of the 2.65-Ga Itabira iron formation, Quadrilátero Ferrífero of Minas Gerais, Brazil, Precambrian Research...Batatal Formation grades upward into to the 2.65-Ga Itabira iron formation. 6 Low Th/U ratios with and...the 2.65-Ga Itabira iron formation, Quadrilátero 12 Ferrífero of Minas Gerais, Brazil ip t 10 cr...Clausthal-Zellerfeld, Germany b Geo-T, 34000-000 Nova Lima-MG, Brazil c Czech Geological Survey, 152 00 Praha 5, Czech |  | 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...Ferrosos, Vale, Miguelão, 34000-000 Nova Lima-MG, Brazil Abstract Bonanza-style mineralization of palladiferous...province that became known as Minas Gerais. The timing of this itabirite-hosted vein mineralization, locally...events recorded in the Quadrilátero Ferrífero of Minas Gerais, the ~2.0 Ga Transamazonian event and the ~0...recovered from the Conceição Fe-ore deposit within the Itabira district. The monazite analyses yield a precise |  | | 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...foliation of the partly or completely replaced itabirite. The structure of the hematite ore deposits varies...deposits of high-grade, compact hematite of QF, Minas Gerais, Brazil, averaging 68%Fe and < 1%SiO2, totalling...Janeiro), Ilha do Fundão, Rio de Janeiro RJ 21949-900, Brazil (frpires@geologia.ufrj.br). Based on a contribution |  | 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) | | ORIGIN OF THE ORES OF MINAS JOHN HIGH-GRADE GERAIS, VAN No. 1 BRAZIL HEMATITE • N. DORR, II...ABSTRACT The high-gradehematite depositsof Minas Gerais, Brazil, are those averagingmore than 66% Fe and...and lessthan 1.5% Hv.O+. They occurin the Cau• Itabirite, a metamorphosedoxide-facies iron formation of...flowagetoward the axes of many folds, thicknessof the itabirite rangingfrom a few to morethan 1,400m. Of 40 ore...bodiesare associatedwith folded structuresin the host itabirite, a few are associated with preore thrust faults |  | | Journal (article/letter/editorial) | | geral. - - In: Geologia econ6mica do Norte de Minas Gerais. - - Serv. Fore. Prod. Min., Bol. 19, 119 S...und ihrer pr~ikambrischen Diamantvorkommen, Minas Gerais, Brasilien. - - Z. Dtsch. Geol, Ges., 115, 177...pr~ikambrische Miogeosynklinale der Espinha~o-Kordillere, Minas Gerais, Brasilien. - - Geol. Rdsch., 56, 825--844,...s6bre a estratigrafia da s6rie Minas na regiao de Diamantina, Minas Gerais. - - Bras. Div. Geol. Min., Notes...und Magmatismus der Minas-Serie in der sfidlichen Serra do Espinhalo, Minas Gerais, Brasilien. - - Geol |  | Lüders, Volker, Romer, Rolf L., Cabral, Alexandre R., Schmidt, Christian, Banks, David A., Schneider, Jens (2005) Genesis of itabirite-hosted Au–Pd–Pt-bearing hematite-(quartz) veins, Quadrilátero Ferrífero, Minas Gerais, Brazil: constraints from fluid inclusion infrared microthermometry, bulk crush-leach analysis and U–Pb systematics. Mineralium Deposita, 40 (3) 289-306 doi:10.1007/s00126-005-0024-8 | Journal (article/letter/editorial) | | Genesis of itabirite-hosted Au–Pd–Pt-bearing hematite-(quartz) veins, Quadrilátero Ferrı́fero, Minas Gerais...Gerais, Brazil: constraints from fluid inclusion infrared microthermometry, bulk crush-leach analysis and...metamorphosed iron formation (itabirite) of the Paleoproterozoic Itabira Group. The sample suite comprises...microscopy Æ U–Pb Æ Jacutinga veins Æ Au–Pd–Pt Æ Minas Gerais Introduction Present address: A. R. Cabral...occurrences of economic importance seem to be known from Brazil 290 only. During the Brazilian Gold Cycle (1695–1785) |  | | 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 |  | Cabral, A. R., Lehmann, B., Sattler, C. D., Pires, F. R. M., Kaneko, K. (2002) Hg–Tl-bearing manganese oxide from Conta História manganese deposit, Quadrilátero Ferrifero, Minas Gerais, Brazil. Applied Earth Science, 111 (2) 123-127 doi:10.1179/aes.2002.111.2.123 | Journal (article/letter/editorial) | | Ferrifero, Minas Gerais, Brazil occur in the Palaeoproterozoic Itabira Iron Formation (Itabira Group)....Ferrífero, the world-class iron district of Minas Gerais, Brazil, numerous manganese oxide deposits Table...deposit comprises rocks of the Palaeoproterozoic Itabira Iron Formation metamorphosed 2 3 4 5 6 7...2–7, banded ore; 8–9, compact ore; 10, friable itabirite; 11, tuffaceous rock. na: not analysed Manuscript...amphibolite-facies conditions. The Itabira Iron Formation,25 or the Itabira Group,20 consists predominantly |  | 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) | | sources in itabirite-hosted iron ore deposits in the Quadrilátero Ferrífero, Minas Gerais, Brazil Ana-Sophie...Quadrilátero Ferrífero, Brazil, is presently the largest accumulation of single itabirite-hosted iron ore bodies...depleted in 18O relative to hematite of the host itabirite. During the modification of iron ore and the formation...meteoric water or brines) during the upgrade from itabirite-hosted hematite to high-grade iron ore-hosted...Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil and/or the infiltration |  | | 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 |  | 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) | | Soco iron ore mine, Quadrilátero Ferrífero, Minas Gerais, Brazil Downloaded by [RMIT University Library]...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...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 |  | 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) | | FROM ITABIRITE-HOSTED Au–Pd–Pt MINERALIZATION (JACUTINGA), ITABIRA DISTRICT, MINAS GERAIS, BRAZIL ROGERIO...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...mineralization, Itabira Iron Formation, Quadrilátero Ferrífero, Minas Gerais, Brazil. SOMMAIRE La hongshiite |  | | 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 |  | | Journal (article/letter/editorial) | | THE ROSETTES OF “NATIVE PALLADIUM” FROM MINAS GERAIS, BRAZIL: EVIDENCE FROM GONGO SOCO ALEXANDRE RAPHAEL...Coelho Neto, 32/704, 22231–110 Rio de Janeiro, RJ, Brazil ROGERIO KWITKO-RIBEIRO Centro de Desenvolvimento...296, Caixa Postal 09, 33030–970 Santa Luzia, MG, Brazil ABSTRACT Minute rosette-like crystals (~1 m)...from Gongo Soco, an iron ore deposit in Minas Gerais, Brazil. The rosettes consist essentially of palladium...oxygen-bearing palladium, gold nugget, Gongo Soco, Minas Gerais, Brazil. SOMMAIRE De très petits cristaux (~1 m) |  | 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...and dolomitic itabirite at Gongo Soco, Quadrilátero Ferrífero of Minas Gerais, Brazil. The hematite–talc...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...channelled along shear zones and converted dolomitic itabirite into the Gongo Soco soft hematite and the talc |  | | Journal (article/letter/editorial) | | NOW:•R•:R, 1964 SUPERGENE IRON ORES OF MINAS JOHN VAN 7 GERAIS, BRAZIL • N. DORR II CONTENTS PAGE Abstract.............................. 1205 1207 1208 Itabirite ............................................................. 1211 Chemicalcomposition of itabirite and supergeneores ..................... 1212............................... 1213 Enriched itabirite ................................................size of itabirite ........................................... 1230 Compositionof itabirite ....... |  | 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 |  | | Journal (article/letter/editorial) | | und Magmatismus der Minas-Serie in der siidlichen Serra do Espinha~o, Minas Gerais, Brasilien Won FRIEDRICH...Kartierung in der sfidlichen Serra do Espinha~o in Minas Gerais, Brasilien, konnten l a t e r a l e Fazies-Oberg~inge... Der tdbergangsbereich ist durch + m~ichtige Itabirite sowie einen ausgepr~igten Magmatismus gekennzeichnet...Fazieswechsel nnd Magmatismus weisen die Ablagerungen der Minas-Serie als Bildungen einer O r t h o g e o s y n...southern part of the Serra do Espinha~o, Minas Gerais, Brazil confirmed lateral facies transitions between |  | | 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 |  | Raphael Cabral, A., Lehmann, B., Kwitko, R., Jones, R. D., Pires, F. R. M., Rocha Filho, O. G., Innocentini, M. D. (2001) Palladium-oxygenated compounds of the Gongo Soco mine, Quadrilátero Ferrífero, central Minas Gerais, Brazil. Mineralogical Magazine, 65 (2) 169-179 doi:10.1180/002646101550208 | Journal (article/letter/editorial) | | mine, Quadrilätero Ferrïfero, central Minas Gerais, Brazil A. RAPHAEL CABRAL1,*, B. LEHMANN1, R. KWITKO2...296 Caixa Postal 09, 33030-970 Santa Luzia-MG, Brazil 3 1636 East Skyline Drive, Tucson, AZ 85178, USA...Cidade Universitária, 21949-900 Rio de Janeiro-RJ, Brazil 5 Mineraça~o Socoimex Ltda., Fazenda Gongo Soco...Soco, Caixa Postal 42, 34800-000 Caeté-MG, Brazil ABSTR ACT New data on the Gongo Soco palladium-oxygenated...preto’ (black gold) and jacutinga (auriferous itabirite/iron ore) is the result of mertieite-II alteration |  | 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 |
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Itabira, Minas Gerais, Brazil