| Giovannini, Arthur L., Mitchell, Roger H., Bastos Neto, Artur C., Moura, Candido A.V., Pereira, Vitor P., Porto, Claudio G. (2020) Mineralogy and geochemistry of the Morro dos Seis Lagos siderite carbonatite, Amazonas, Brazil. Lithos, 360. 105433 doi:10.1016/j.lithos.2020.105433 | Journal (article/letter/editorial) | geochemistry of the Morro dos Seis Lagos siderite carbonatite, Amazonas, Brazil Arthur L. Giovannini...Bento Gonçalves 9500, Porto Alegre 91501-970, RS, Brazil Department of Geology, Lakehead University, 955...Avenida Victor Barreto 2288, Canoas 92010-000, RS, Brazil d Instituto de Geociências, Universidade Federal...Federal do Pará, Rua Augusto Corrêa 1, Belém, PA, Brazil e Instituto de Geociências, Universidade Federal...Bento Gonçalves 9500, Porto Alegre 91501-970, RS, Brazil f Companhia de Pesquisa de Recursos Minerais CPRM | | Giovannini, Arthur L., Bastos Neto, Artur C., Porto, Claudio G., Pereira, Vitor P., Takehara, Lucy, Barbanson, Luc, Bastos, Pedro H.S. (2017) Mineralogy and geochemistry of laterites from the Morro dos Seis Lagos Nb (Ti, REE) deposit (Amazonas, Brazil) Ore Geology Reviews, 88. 461-480 doi:10.1016/j.oregeorev.2017.05.008 | Journal (article/letter/editorial) | of Laterites from the Morro dos Seis Lagos Nb (Ti, REE) Deposit (Amazonas, Brazil). Arthur L. Giovannini...of Laterites from the Morro dos Seis Lagos Nb (Ti, REE) Deposit (Amazonas, Brazil)., Ore Geology Reviews...of Laterites from the Morro dos Seis Lagos Nb (Ti, REE) Deposit (Amazonas, Brazil). Arthur L. GIOVANNINI1...Cidade Universitária, Ilha do Fundão, Avenida Athos da Silveira Ramos s/n, 21949-900, Rio de Janeiro, RJ...Pesquisa de Recursos Minerais CPRM. SUREG/PA. Rua Banco da Província, 105, Porto Alegre, RS, Brasil. lucytakehara@gmail | | | Journal (article/letter/editorial) | diffraction. Three TiO2 -polymorphs (anatase, brookite and rutile) and three pyrochlore group members...residual fluids led to the generation of Nb-rich brookite (the main niobium concentrator in the Petyayan-Vara)...separation of these elements. Keywords: metasomatism; brookite; anatase; pyrochlore; niobium; carbonatites; Vuoriyarvi...deposits. These minerals (anatase, rutile, and brookite) are also found in many other complexes [24]....The evolution of the Morro dos Seis Lagos Nb (Ti, REE) deposit (Amazonas, Brazil) deserves particular | | | Journal (article/letter/editorial) | Strange Lake; (10) Tanbreez; (11) Motzfeldt; (12) Seis Lagos; (13) Bayan Obo; (14) Nemegosenda; (15) Luesh;...Montviel Two Tom Strange Lake Tanbreez Motzfeldt Seis Lagos Bayan Obo Nemegosenda Luesh Bingo Ghurayyah Halzan...and mean niobium content is the Seis Lagos deposit (1.33 Ga), Amazonas Craton. For a long time, based...rutile (ilmenorutile), and, partially, in Nb– brookite, Nb–goethite, and secondary pyrochlore, which...al., 2018). This deposit is the only one beyond Brazil where stable and long-term (over 40 years) mining | | Kozlov, Evgeniy, Fomina, Ekaterina, Sidorov, Mikhail, Shilovskikh, Vladimir, Bocharov, Vladimir, Chernyavsky, Alexey, Huber, Miłosz (2020) The Petyayan-Vara Carbonatite-Hosted Rare Earth Deposit (Vuoriyarvi, NW Russia): Mineralogy and Geochemistry. Minerals, 10 (1) 73 doi:10.3390/min10010073 | Journal (article/letter/editorial) | (RE carbonatites) Angola [5,6], Australia [7–9], Brazil Mongolia [52,53], [54–56], New Zealand [57], Norwayin[58]...Kenoplumbopyrochlore, (Pb,)2 Nb2 O6 (,OH) Anatase, brookite, rutile ***, TiO2 Hollandite, Ba(Mn4+ 6 Mn3+ 2...pseudomorphically replaced, see Section 4.1.1; *** Mostly brookite; **** Pyrite is the main sulfide mineral; —vacancy...silicocarbonatites. as three polymorphic varieties: rutile, and brookite. In(Ti-oxides high-Ti carbonatites, their High-Ti...high-Ti carbonatites, total The most polymorph brookite, while less abundant. Sparsetheir rutile occurs | | Chakhmouradian, Anton R., Reguir, Ekaterina P., Kressall, Ryan D., Crozier, Jeremy, Pisiak, Laura K., Sidhu, Ravinder, Yang, Panseok (2015) Carbonatite-hosted niobium deposit at Aley, northern British Columbia (Canada): Mineralogy, geochemistry and petrogenesis. Ore Geology Reviews, 64. 642-666 doi:10.1016/j.oregeorev.2014.04.020 | Journal (article/letter/editorial) | the supply market is essentially controlled by Brazil (N90% since 2000: IBRAM, 2012; Moreno, 2011), it...their own sources of this element independent of Brazil (e.g., Dzhumaylo and Skorobogat'ko, 2013; Pistilli...Ta)2O6] from granites and pegmatites of Africa and Brazil (Bastos Neto et al., 2009; Melcher et al., in this... Minas Gerais, Brazil Boa Vista and other projects, Catalão I and II, Goiás, Brazil Neoprot.? Upper...separating the Paraná accounts for 65–70% of global and São Francisco basins (plume-related?) Nb production 83–85 | | | Book | MINERALS & PRECIOUS STONES OF BRAZIL Sponsored by: VALE MINISTER.IO DA CULTURA © 2009 - CARLOS CORNEJO...BARTORELLI EDITORIAL AND GRAPHIC COORDINATION Silvia Rita dos Santos TRANSLATION BTS - Business Translation Services...photographs: "Parafba" tourmaline (25 x 6 mm), Sao Jose da Batalha, Parafba. Courtesy of Bruno and Rolando Gioia...Brasileira do Livro, SP, Brazil) Cornejo, Carlos .Minerals & precious stones of Brazil. Carlos Cornejo, Andrea...3. Minerals - Brazil 4. Minerals- Classification 5. Mineralogy 6. Mineralogy - Brazil - History 7. Precious | | | Report (issue) | rare-earth elements, and antimony in China; niobium in Brazil; and platinum-group elements in South Africa and...chart showing niobium resources and reserves in Brazil, Canada, and the United States...................and leucoxene) and rutile (including anatase and brookite). ..............................................giga- (G-) mega- (M-) kilo- (k-) hecto- (h-) deka- (da-) deci- (d-) centi- (c-) milli- (m-) micro- (µ-)...industrialization in large developing countries, such as Brazil, China, and India. In addition, the development |
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