| 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) | the Conceição Iron Mine, Itabira District, Southern SĂŁo Francisco Craton, Brazil: An Example of a Jacutinga-Type...H3C 3P8 Abstract The Conceição mine, which is located in the Itabira district, southern SĂŁo Francisco...an altered Lake Superior-type iron-formation. The mine sequence consists of three metamorphosed lithostratigraphic...hematite (hematite III), kaolinite, muscovite, and tourmaline. The quartz vein is dismembered and quartz grains...between the Au-Pd orebodies at the Conceição and CauĂȘ deposits (referred to as âjacutingatypeâ deposits) | | Koglin, Nikola, Cabral, Alexandre Raphael, Brunetto, Wilson JosĂ©, VymazalovĂĄ, Anna (2012) Goldâtourmaline assemblage in a Witwatersrand-like gold deposit, Ouro Fino, QuadrilĂĄtero FerrĂfero of Minas Gerais, Brazil: the composition of gold and metallogenic implications. Neues Jahrbuch fĂŒr Mineralogie - Abhandlungen Journal of Mineralogy and Geochemistry, 189 (3) 263-273 doi:10.1127/0077-7757/2012/0223 | Journal (article/letter/editorial) | 273 Published online July 2012 Article Goldâtourmaline assemblage in a Witwatersrand-like gold deposit...deposit, Ouro Fino, QuadrilĂĄtero FerrĂfero of Minas Gerais, Brazil: the composition of gold and metallogenic...Moeda Formation of the Minas Supergroup, QuadrilĂĄtero FerrĂfero of Minas Gerais, Brazil, has visible gold...characteristically intergrown with tourmaline. The goldâtourmaline aggregates truncate sub- to euhedral...The mercury component in the gold and the goldâtourmaline assemblage suggest precipitation from boron-rich | | Galbiatti, H.F., Fonseca, M.A., Pereira, M.C., PolĂŽnia, J.C. (2007) Structural control of AuâPd mineralization (Jacutinga): An example from the CauĂȘ Mine, QuadrilĂĄtero FerrĂfero, 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 CauĂȘ Mine, QuadrilĂĄtero FerrĂfero, Brazil H.F. Galbiatti a,â, M.A. Fonseca...Rio Doce, Minas de Itabira, Serra do Esmeril S/N, Mina CauĂȘ, 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...Jacutinga. The main orebodies are hosted within the CauĂȘ Syncline, a SW-verging fold that involves Paleoproterozoic...Paleoproterozoic metasedimentary rocks in the Itabira District, a regional synclinorium with BIFs in the core | | Cabral, Alexandre Raphael, Wiedenbeck, Michael, Rios, Francisco Javier, Seabra Gomes, AntĂŽnio 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...boron-isotope composition of tourmaline Alexandre Raphael Cabral & Michael Wiedenbeck & Francisco Javier...at Gongo Soco, QuadrilĂĄtero FerrĂfero of Minas Gerais, Brazil. The hematiteâtalc schist and soft hematite...Nuclear (CDTN/CNEN), 30123-970, Belo Horizonte-MG, Brazil A. A. Seabra Gomes Jr GerĂȘncia de Exploração Mineral...Lima-MG, Brazil O. G. Rocha Filho Rua CearĂĄ, 1338/701, 30150-311, Belo Horizonte-MG, Brazil R. D. Jones | | Cabral, Alexandre Raphael, TupinambĂĄ, Miguel, Zeh, Armin, Lehmann, Bernd, Wiedenbeck, Michael, Brauns, Michael, Kwitko-Ribeiro, Rogerio (2017) Platiniferous goldâtourmaline aggregates in the goldâpalladium 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) | Platiniferous goldâtourmaline aggregates in the goldâpalladium belt of Minas Gerais, Brazil: implications...The platiniferous goldâpalladium belt of Minas Gerais, Brazil, forms an approximately 240-km-long, roughly...coarse-grained goldâtourmaline aggregates and integrate recently obtained ages and tourmaline boron-isotope...Xavier 524 s. A4016, Rio Janeiro-RJ 20550-050, Brazil 4 Deutsches GeoForschungsZentrum GFZ, Telegrafenberg...BR 381, km 450, Santa Luzia-MG 33040-900, Brazil tourmaline aggregates seem to be the ultimate expression | | Cabral, Alexandre Raphael, Koglin, Nikola, Strauss, Harald, BrĂ€tz, Helene, Kwitko-Ribeiro, Rogerio (2013) Regional sulfateâhematiteâsulfide zoning in the auriferous Mariana anticline, QuadrilĂĄtero FerrĂfero of Minas Gerais, Brazil. Mineralium Deposita, 48 (7) 805-816 doi:10.1007/s00126-013-0481-4 | Journal (article/letter/editorial) | Mariana anticline, QuadrilĂĄtero FerrĂfero of Minas Gerais, Brazil Alexandre Raphael Cabral & Nikola Koglin...hematite-rich auriferous deposits and auriferous tourmalineâsulfide deposits, displays a regional sulfateâ...south-eastern part of the QuadrilĂĄtero FerrĂfero of Minas Gerais, Brazil. Cross-cut relationships of barite veins...+19.6 and +20.8â°. The Passagem arsenopyrite and tourmaline have Co/Ni ratios that define a positive linear...33040-900 Santa Luzia, MG, Brazil Keywords Barite . Sulfide . Gold . Tourmaline . Î33S . ÎŽ34S . Mariana | | Cabral, A. R., Lehmann, B., Sattler, C. D., Pires, F. R. M., Kaneko, K. (2002) HgâTl-bearing manganese oxide from Conta HistĂłria manganese deposit, QuadrilĂĄtero 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)....FerrĂfero, 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...The Itabira Iron Formation,25 or the Itabira Group,20 consists predominantly of itabirites (CauĂȘ Formation)...age of 2400 m.y.,2 the Itabira Iron Formation is the middle unit of the Minas Supergroup, which includes | | | Journal (article/letter/editorial) | and tourmaline: the auriferous lode of Passagem, QuadrilĂĄtero FerrĂfero of Minas Gerais, Brazil Alexandre...Passagem de Mariana is characterised by abundant tourmaline, which is intergrown with arsenopyrite. Spot...Co/Ni ratios consistently <1. The coexisting tourmaline also has Co/Ni <1, with Co and Ni contents that...those in the arsenopyrite. The Co/Ni ratios of tourmaline and arsenopyrite are tightly distributed along...of lode tourmaline and its B-isotope data (from the literature), the Co/Ni ratios of tourmaline and arsenopyrite | | | Journal (article/letter/editorial) | during the gold-lode formation of Passagem, Minas Gerais, Brazil Alexandre Raphael Cabral a,â, Armin Zeh...Passagem de Mariana Minas Gerais a b s t r a c t Zircon and xenotime occur in tourmaline-rich hydrothermal...immediately adjacent to altered zircon within the same tourmaline pocket. The xenotime grains give a Concordia...deposit (i.e., jacutinga lode) in the region (Itabira), another important mineralisation style of gold...zircon, but absence of rock fragments in the tourmaline pocket investigated here, implies that detrital | | Trumbull, R. B., Garda, G. M., Xavier, R. P., Cavalcanti, J. A. D., Codeço, M. S. (2019) Tourmaline in the Passagem de Mariana gold deposit (Brazil) revisited: major-element, trace-element and B-isotope constraints on metallogenesis. Mineralium Deposita, 54 (3) 395-414 doi:10.1007/s00126-018-0819-z | Journal (article/letter/editorial) | 1007/s00126-018-0819-z ARTICLE Tourmaline in the Passagem de Mariana gold deposit (Brazil) revisited: major-element...Germany, part of Springer Nature 2018 Abstract Tourmaline at Passagem de Mariana forms three associations:...veins (T3). The major-element composition of tourmaline is similar in all, with Mg/ (Mg+Fe) from 0.59...prohibited by grain size and inclusions. The T2 and T3 tourmaline have similar trace-element values, except higher...mineralized veins. The ÎŽ11B values of T1 and T2 tourmaline range from â 17.8 to â 9.7â°, with indistinguishable | | Oliveira, Lucilia Aparecida Ramos de, Rios, Francisco Javier, RosiĂšre, Carlos Alberto, WĂ€lle, 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 SĂŁo 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 SĂŁo Francisco Craton, Minas Gerais, Brazil Lucilia Aparecida Ramos de Oliveira a,â...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 (23.2â25.3 wt% NaCleqv) from the Itabira ore likely | | Vial, D.S., Duarte, B.P., Fuzikawa, K., Vieira, M.B.H. (2007) An epigenetic origin for the Passagem de Mariana gold deposit, QuadrilĂĄtero FerrĂfero, Minas Gerais, Brazil. Ore Geology Reviews, 32 (3) 596-613 doi:10.1016/j.oregeorev.2005.03.017 | Journal (article/letter/editorial) | Mariana gold deposit, QuadrilĂĄtero FerrĂfero, Minas Gerais, Brazil D.S. Vial a,â, B.P. Duarte b , K. Fuzikawa...Vale do Rio Doce, BR381, Km 459, Santa Luzia, MG, Brazil Faculdade de Geologia da Universidade do Estado...Francisco Xavier, 524, MaracanĂŁ, Rio de Janeiro, RJ, Brazil c CDTN-Centro de Desenvolvimento da Tecnologia...Horizonte, MG, Brazil d Companhia Vale do Rio Doce, BR262, Km 296, Santa Luzia, MG, Brazil b Received...Available online 14 February 2007 Abstract The goldâtourmaline quartzâvein deposit of Passagem de Mariana, in | | | Journal (article/letter/editorial) | hematite ore at the QuadrilĂĄtero FerrĂfero, 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...are also substituted by hematite. Muscovite, tourmaline, talc, chlorite, apatite and kaolinite have been...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 | | | Journal (article/letter/editorial) | Technical Note Spessartineâtourmaline-bearing manganiferous itabirite at Miguel Congo: petrographic...metaexhalite in the QuadrilĂĄtero FerrĂfero of Minas Gerais, Brazil A. R. Cabral For the first time, petrographic...spessartineâtourmaline-bearing itabirite in the QuadrilĂĄtero FerrĂfero of Minas Gerais, Brazil. This mineral...Coelho Neto 32/apt 704, 22231-110 Rio de JaneiroâRJ, Brazil. ©2003 IoM Communications Ltd. Published by Maney...Mining. Keywords: Spessartineâtourmaline-bearing itabirite, Minas Gerais, Brazil 1 Introduction The Palaeoproterozoic | | Hensler, Ana-Sophie, Hagemann, Steffen G., Brown, Philip E., RosiĂšre, Carlos A. (2014) Using oxygen isotope chemistry to track hydrothermal processes and fluid sources in itabirite-hosted iron ore deposits in the QuadrilĂĄtero FerrĂfero, Minas Gerais, Brazil. Mineralium Deposita, 49 (3) 293-311 doi:10.1007/s00126-013-0486-z | Journal (article/letter/editorial) | deposits in the QuadrilĂĄtero FerrĂfero, Minas Gerais, Brazil Ana-Sophie Hensler & Steffen G. Hagemann...Heidelberg 2013 Abstract The QuadrilĂĄtero FerrĂfero, Brazil, is presently the largest accumulation of single...Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil and/or the infiltration...jaspilite-hosted iron ore of CarajĂĄs in the north of Brazil, the ore bodies of the Transvaal in South Africa...unconformably overlain by the metasedimentary rocks of the Minas Supergroup (MSG) (Fig. 1) (Dorr 1969). The MSG was | | | Journal (article/letter/editorial) | Palladian gold from the Cau iron mine, Itabira District, Minas Gerais, Brazil G. R. OLIVO,M. GAUTHIERAND M...Palladian gold from the Cau~ iron mine, Itabira District, Minas Gerais, Brazil is found in horizons of hydrothermally-altered...of Sl-fabrics. K~VWOROS: gold, palladium, Itabira, Brazil, iron-formation, jacutinga. Introduction IT...Devon, England (Clark and Criddle, 1982); and in Brazil from the Serra Pelada deposit, in Par~ State (Meireles...1993), all in Minas Gerais State. The palladian gold occurrences in Minas Gerais, Brazil, discussed in | | GuimarĂŁes, Frederico Sousa, de Freitas, Monica Elizetti, Rios, Francisco Javier, Pedrosa, TĂ©rcio Assunção (2019) Mineralogical characterization and origin of uranium mineralization in Witwatersrand-like metaconglomerate of the Moeda Formation, QuadrilĂĄtero FerrĂfero, Brazil. Ore Geology Reviews, 106. 423-445 doi:10.1016/j.oregeorev.2019.01.016 | Journal (article/letter/editorial) | of the Moeda Formation, QuadrilĂĄtero FerrĂfero, Brazil Frederico Sousa GuimarĂŁes, Monica Elizetti de Freitas...of the Moeda Formation, QuadrilĂĄtero FerrĂfero, Brazil, Ore Geology Reviews (2019), doi: https://doi.org/10...of the Moeda Formation, QuadrilĂĄtero FerrĂfero, Brazil Frederico Sousa GuimarĂŁesa,b (fredsgguimaraes@gmail...Federal de Minas Gerais-UFMG, Campus Pampulha, 31270-901, Belo Horizonte, Minas Gerais, Brazil. b Corresponding...is the basal unit of the Minas Supergroup in the QuadrilĂĄtero FerrĂfero, Brazil, and has quartz-pebble | | | Journal (article/letter/editorial) | minerals from the Caua iron mine, Itabira District, Minas Gerais, Brazil GFMA RIBEIROOLIVOANDMICHELGAUTHIER...minerals from the Cau~ iron mine, Itabira District, Minas Gerais, Brazil, are found in goldrich jacutinga...minerals, palladseite, arsenopalladinite, CauE mine, Brazil, jacutinga. Introduction minerals, but as...palladium-bearing gold ore of the Cau~ iron mine, Itabira District, Brazil, are reported and discussed in terms...terms of their genesis. PALLADIUMminerals in the Itabira region were first described by Clark et al. (1974) | | | Journal (article/letter/editorial) | SEBASTIĂO GOLD DEPOSIT, BRAZIL: IMPLICATIONS FOR LODE-GOLD MINERALIZATION IN MINAS GERAIS ALEXANDRE RAPHAEL... Departamento de Geologia, Rio de Janeiro, RJ, Brazil ABSTRACT SĂŁo SebastiĂŁo is a recently discovered...deposit in the Pitangui greenstone belt, Minas Gerais, Brazil. Part of its hydrothermal system is characterized...distributed tourmaline that is concentrated in patchy domains, or pockets. The tourmaline-rich pockets...Pyrrhotite and late chalcopyrite occur in the tourmaline-rich pockets. Bismuth, bismuthâgold intermetallic | | | 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 (QuadrilĂĄtero FerrĂfero, Itabira, and GuanhĂŁes) were part of the...mentioning that the Serra dos CarajĂĄs Basin in northern Brazil is older. It contains the worlds' largest iron...metamorphosed CaraĂba deposit, Curaçå Valley, Bahia, Brazil. This is an unusual, strongly deformed copper deposit | | Cabral, A. R., Lehmann, B., Kwitko, R., Costa, C. H. C. (2002) The Serra Pelada Au-Pd-Pt deposit, Carajas mineral province, northern Brazil: reconnaissance mineralogy and chemistry of very high grade palladian gold mineralization. Economic Geology, 97 (5) 1127-1138 doi:10.2113/gsecongeo.97.5.1127 | Journal (article/letter/editorial) | Au-Pd-Pt DEPOSIT, CARAJĂS MINERAL PROVINCE, NORTHERN BRAZIL: RECONNAISSANCE MINERALOGY AND CHEMISTRY OF VERY...296, Caixa Postal 09, 33030-970 Santa Luzia-MG, Brazil AND C.H. CRAVO COSTA Companhia Vale do Rio DoceâCVRD...51, Serra dos CarajĂĄs, 68516-000 Parauabepas-PA, Brazil Abstract A historic drill core from the Serra...palladseite and sudovikovite from the type localities of Itabira (Davis et al., 1977) and Karelia (Polekhovskii...are thorite, baddeleyite, titanite, allanite, tourmaline, and molybdenite (Tallarico et al., 2000b). Chloritization | | Zeh, Armin, Cabral, Alexandre Raphael, Koglin, Nikola, Decker, Mareike (2018) Rutile alteration and authigenic growth in metasandstones of the Moeda Formation, Minas Gerais, Brazil â A result of Transamazonian fluidârock interaction. Chemical Geology, 483. 397-409 doi:10.1016/j.chemgeo.2018.03.007 | Journal (article/letter/editorial) | in metasandstones of the Moeda Formation, Minas Gerais, Brazil â A result of Transamazonian ïŹuidârock interaction...Universidade Federal de Minas Gerais (UFMG), 31270-901 Belo Horizonte, MG, Brazil c Centro de Desenvolvimento...Tecnologia Nuclear (CDTN), 31270-901 Belo Horizonte, MG, Brazil d Geodynamics and Geomaterials Research Division...basal unit of the Minas Supergroup in the QuadrilĂĄtero FerrĂfero, Minas Gerais, Brazil. The Moeda metasandstones...al. 1.1. Geology of the Moeda Formation and the Minas supergroup considered to be resistant during weathering | | 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, BaraÌo de Cocais MG, 35970-000, Brazil 2 ABSTR ACT Hematite is a mineral the chemical...deposits, CaueÌ (Itabira district) and Gongo Soco, in the Palaeoproterozoic Itabira Iron Formation, QuadrilaÌtero...QuadrilaÌtero FerrıÌfero of Minas Gerais, Brazil, has revealed distinct variations in chemical composition | | Koglin, Nikola, Cabral, Alexandre Raphael, Brunetto, Wilson JosĂ©, BrĂ€tz, Helene (2012) Gold and uranium contents in gypsum formed from percolating ground water in a Witwatersrand-like gold deposit, Ouro Fino, Minas Gerais, Brazil: LAâICPMS data. Neues Jahrbuch fĂŒr Mineralogie - Abhandlungen Journal of Mineralogy and Geochemistry, 189 (2) 189-195 doi:10.1127/0077-7757/2012/0218 | Journal (article/letter/editorial) | Witwatersrand-like gold deposit, Ouro Fino, Minas Gerais, Brazil: LAâICPMS data Nikola Koglin, Alexandre...Witwatersrand-like gold deposit, Ouro Fino, Minas Gerais, Brazil. The pyrite exposed along exploration adits...metaconglomerate; Ouro Fino; Moeda Formation, Minas Gerais; Brazil Introduction Gypsum is a common mineral...metaconglomerate in the Ouro Fino syncline, Minas Gerais, Brazil. This uraniferous and auriferous setting...geological map of the QuadrilĂĄtero FerrĂfero, Minas Gerais (modified after Dorr 1969). Star indicates the | | Camara, F., Gatta, G. D., Uvarova, Y., Gagne, O. C., Belakovskiy, D. I. (2014) New Mineral Names,. American Mineralogist, 99 (10) 2150-2158 doi:10.2138/am-2014-652 | Journal (article/letter/editorial) | greisenized and crosscut by quartz-muscovite-tourmaline-sulphides veins 0.2â0.8 m thick 2150 NEW MINERAL...MINERAL NAMES with muscovite-tourmaline-apatite-fluorite greisens in their selvages. Beryl, molibdenite...TlPb4(Sb7As2)S9S18, a new mineral species from the Monte Arsiccio mine: occurrence and crystal structure. Canadian Mineralogist...mineral species from the CauĂȘ iron-ore deposit, Itabira District, Minas Gerais, Brazil. Canadian Mineralogist...auriferous vein at the CauĂȘ iron-ore deposit, Itabira District, Minas Gerais, Brazil. It was previously mentioned |
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