 | 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...(Fig. 5a) and consists of a mixture of goethite, limonite, magnetite and hematite. Weathered magnetite−hematite...banded magnetite, massive magnetite and goethite−limonite were recognized at the western part of the Gouap...secondary minerals (hematite, martite, goethite, limonite) and leaching of silica gangue minerals. This...consists of a mixture of fine-grained yellowish-brown limonite, black magnetite and reddish-brown hematite (Fig |  | | 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...northeastern part of the Quadrilátero Ferrífero, Brazil, indicate a complex process of oxidation and mineralization...Quadrilátero Ferrífero district, Minas Gerais, southeastern Brazil, are host to metamorphosed iron formations |  | | 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 |  | 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) | | altered clayey hematite rich in potassium, Lm = limonite. 8 N. N. CHOMBONG ET AL. Table 1. Microchemical...haematite, kidneyshaped haematite and goethite plus limonite zones), as a result of hydration caused by the...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 |  | 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...subhedral crystals, commonly replaced by geothite/limonite (Fig. 3c). Quartz (30–35 vol %) exhibits fine-grained...model was reported at the Capão Xavier deposit (Brazil) where the weathering of the siliceous itabirite...high grade (>50% Fe) (Li et al., 2014), whereas in Brazil, Canada, and Australia, high-grade iron ore types |  | | Journal (article/letter/editorial) | | minerals of specularite, martite, minor magnetite and limonite; and the gangue minerals are similar to those...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,...ores of the Águas Claras Mine and comparison with the Capão Xavier and Tamanduá iron ore deposits, Quadrilátero...Quadrilátero Ferrífero, Brazil. Miner. Deposita 43, 229–254. Su, W.C., Hu, R.Z., Xia, B., Xia, Y., Liu, |  | | 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 |  | | 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 ..................Quadrilátero Ferrífero, Brazil ............................ 719 Tatiana A. Fernandes Lima, Carlos A. Rosière...the Esperança deposit, Quadrilátero Ferrífero, Brazil – first results .................................Norte iron ore deposits, Carajás mineral province, Brazil .............................................. |  | | 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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