 | | Report (issue) | | ............................................M24 Mine Waste Characteristics ........................................................................M27 Mine Closure ..........................................subsurface geology of the Saint-Honoré carbonatite complex in southern Quebec, Canada, and a schematic north-south...chart showing niobium resources and reserves in Brazil, Canada, and the United States................................M21 M13. Bar charts showing global mine production of niobium and tantalum, from 2000 to |  | | Journal (article/letter/editorial) | | assemblage from Neoproterozoic mélange, Central Brazil Matthew T. Brown, Reinhardt A. Fuck, Elton L. Dantas...assemblage from Neoproterozoic mélange, Central Brazil, Precambrian Research (2019), doi: https://doi...assemblage from Neoproterozoic mélange, Central Brazil Matthew T. Browna*, Reinhardt A. Fucka, Elton L...Brasília, Brasília, Federal District, 70910-900, Brazil *Corresponding author. E-mail address: brownmt7@gmail...Abstract The Neoproterozoic Brasília belt, central Brazil, formed during the amalgamation of West Gondwana |  | | Journal (article/letter/editorial) | | decomposition of pyrochlore and formation of Nb-bearing rutile, brookite, and anatase. The Nb contents of the...there are only three operating Nbmines [Araxá and Catalão-II (Brazil) and St. Honoré (Canada)]. All produce...the primary sources. The Brazilian deposits at Araxá, Catalão-I and II, and Seis Lagos are examples of...only operating Nb mine in under-saturated peralkaline syenites is the Karnasurt mine (Kremenetsky et al...Pekov, 2000) in the lujavrites of the Lovozero complex from which a concentrate with about 8 wt.% Nb2O5 |  | Nascimento, Marisa, Lemos, Flávio, Guimarães, Rogério, Sousa, Clóvis, Soares, Paulo (2019) Modeling of REE and Fe Extraction from a Concentrate from Araxá (Brazil) Minerals, 9 (7) 451 doi:10.3390/min9070451 | Journal (article/letter/editorial) | | REE and Fe Extraction from a Concentrate from Araxá (Brazil) Marisa Nascimento 1, *, Flávio Lemos 1 , Rogério...21941-908, Brazil Companhia Brasileira de Metalurgia e Mineração—CBMM, Araxá 38183-903, Brazil Correspondence:...(REE) concentrate obtained from the ore from Araxá (MG-Brazil). The most important process variables have...development of an efficient hydrometallurgical route. Brazil has the second largest reserve of rare earths in...in the world, with 22 million tons [1], and the Araxá-MG deposit is one of REE’s main assets worldwide |  | Cordeiro, Pedro F.O., Brod, José A., Dantas, Elton L., Barbosa, Elisa S.R. (2010) Mineral chemistry, isotope geochemistry and petrogenesis of niobium-rich rocks from the Catalão I carbonatite-phoscorite complex, Central Brazil. Lithos, 118 (3) 223-237 doi:10.1016/j.lithos.2010.04.007 | Journal (article/letter/editorial) | | from the Catalão I carbonatite-phoscorite complex, Central Brazil Pedro F.O. Cordeiro a,⁎, José A. Brod a...Geociências, Universidade De Brasília, Brasília-DF, Brazil Instituto De Estudos Socio-Ambientais, Universidade...Universidade Federal De Goiás, Goiânia-GO, Brazil a r t i c l e i n f o Article history: Received 28 July...Apatite a b s t r a c t The Catalão I carbonatite complex is part of the Late-Cretaceous Alto Paranaíba Igneous...the Nb + P + Fe mineralization of the Catalão I Complex. Dolomite carbonatite (DC) occurs in association |  | | Journal (article/letter/editorial) | | % from tin slag refining and 10 % from secondary mine concentrates. Due to rapid industrialisation and...Weathered crusts overlying carbonatite complexes in Brazil and one hard rock carbonatite deposit in Canada...Canada account for about 92 and 7 % of Nb world mine production, respectively. Since the bulk of the production...the start-up time for new operations. The Kenticha mine (Ethiopia) is a past producer that may re-enter...studies on new developments) are required in any mine as price levels vary for each deposit and are dependent |  | Oliver, Nicholas H.S., Thomson, Brian, Freitas-Silva, Flavio H., Holcombe, Rodney J., Rusk, Brian, Almeida, Bruna S., Faure, Kevin, Davidson, Garry R., Esper, Eldrick L., Guimarães, Paulo J., Dardenne, Marcel A. (2015) Local and Regional Mass Transfer During Thrusting, Veining, and Boudinage in the Genesis of the Giant Shale-Hosted Paracatu Gold Deposit, Minas Gerais, Brazil. Economic Geology, 110 (7) 1803-1834 doi:10.2113/econgeo.110.7.1803 | Journal (article/letter/editorial) | | Giant Shale-Hosted Paracatu Gold Deposit, Minas Gerais, Brazil* Nicholas H.S. Oliver,1,2,† Brian Thomson...Andar, Cruzeiro, Belo Horizonte – MG 30130-009, Brazil 4 Instituto 5 School de Geociências, Universidade...Universidade de Brasília, Brasília DF, 70910-900, Brazil of Earth Sciences, University of Queensland, St Lucia...understand the genesis of the Paracatu deposit in Brazil, a shallow-dipping, bulk-tonnage, vein-style low-grade...of large veins locally preserve preboudinage, complex internal vein textures, including sulfide-rich |  | | Report (issue) | | gov/images/periodictable.pdf. Cover. The Mountain Pass Mine, San Bernardino County, California, was the only...............................................O21 Mine Waste Characteristics.........................................................................O22 Mine Closure...........................................Figures O1. O2. O3. O4. O5. Graph showing world mine production of rare-earth oxides, by country and................O6 Photograph of the Mountain Pass Mine in San Bernardino County, California, which was |  | Wang, Zhen-Yu, Fan, Hong-Rui, Zhou, Lingli, Yang, Kui-Feng, She, Hai-Dong (2020) Carbonatite-Related REE Deposits: An Overview. Minerals, 10 (11) 965 doi:10.3390/min10110965 | Journal (article/letter/editorial) | | to China, along with a minor contribution from Brazil, Australia, the United States, Canada, India [7...(REE) HREE-enriched deposits in southern China Araxá Catalão (REE) Mrro do Ferro (Th-REE) Mount Weld...(REE) Igneous carbonatite Carbonatite China Brazil Brazil Australia United States Russia Russia India...REE deposit, which is hosted in the Ilímaussaq complex of southern Greenland, is a typical example [14...the whole rock The types of REE deposits are complex and diverse, and the ones related to carbonatite–alkaline |  | | Journal (article/letter/editorial) | | granitic magmatism in the Brasilia Belt, Central Brazil: regional implications of new SHRIMP U–Pb and Sm–Nd...Universidade de Brası́lia, Brası́lia DF 70910-900, Brazil Research School of Earth Sciences, The Australian...associated granitic rocks of the Anápolis–Itauçu Complex in the central-southern part of the Brası́lia Belt...east. The data suggest that the Anápolis–Itauçu Complex, instead of representing the ancient sialic basement...constitutes a Neoproterozoic high-grade metamorphic complex related with the evolution of the Brasiliano orogen |  | Barbosa, Elisa Soares Rocha, Brod, José Affonso, Cordeiro, Pedro Filipe Oliveira, Junqueira-Brod, Tereza Cristina, Santos, Roberto Ventura, Dantas, Elton Luiz (2020) Phoscorites of the Salitre I complex: Origin and petrogenetic implications. Chemical Geology, 535. 119463 doi:10.1016/j.chemgeo.2020.119463 | Journal (article/letter/editorial) | | com/locate/chemgeo Phoscorites of the Salitre I complex: Origin and petrogenetic implications a,b,d a...- UFG), CEP: 74968755 Aparecida de Goiânia, GO, Brazil Instituto de Geociências – Universidade de Brasília...Brasília (IG – UnB), CEP: 70910-900 Brasília, DF, Brazil Departamento de Ingeniería de Minería - Pontificia...para o Desenvolvimento Científico e Tecnológico, Brazil b c A R T I C LE I N FO A B S T R A C T Editor:...Dingwell The Salitre I complex is a kidney-shaped alkaline-carbonatite-phoscorite complex part of the Late |  | Uhlein, Gabriel J., Uhlein, Alexandre, Stevenson, Ross, Halverson, Galen P., Caxito, Fabrício A., Cox, Grant M. (2017) Early to late Ediacaran conglomeratic wedges from a complete foreland basin cycle in the southwest São Francisco Craton, Bambuí Group, Brazil. Precambrian Research, 299. 101-116 doi:10.1016/j.precamres.2017.07.020 | Journal (article/letter/editorial) | | The Southwest São Francisco Craton, Bambuí Group, Brazil Gabriel J. Uhlein, Alexandre Uhlein, Ross Stevenson...The Southwest São Francisco Craton, Bambuí Group, Brazil, Precambrian Research (2017), doi: http://dx.doi...THE SOUTHWEST SÃO FRANCISCO CRATON, BAMBUÍ GROUP, BRAZIL Gabriel J. Uhlein1,2; Alexandre Uhlein1; Ross...de Minas Gerais, Campus Pampulha, Av. Antônio Carlos 6627, 31270-901, Belo Horizonte, MG, Brazil - *corresponding...that the Ediacaran Bambuí Group in east-central Brazil was deposited in a foreland basin. The Samburá |  | | Journal (article/letter/editorial) | | Neoproterozoic Brasília Belt and Tocantins Province, central Brazil Luiz J.H. D’el-Rey Silva ⁎, Marcos A.R. de Vasconcelos...Ribeiro, Asa Norte, CEP 70910-900, Brasília-DF, Brazil Received 5 May 2007; received in revised form 11...Neoproterozoic Brasília Belt (Tocantins Province, central Brazil) in contact with a lower-grade footwall (External...Underthrusting; Brasília Belt; Tocantins Province; Brazil 1. Introduction Regional-scale faults and shear...evolution of the Tocantins Province in central Brazil. 1342-937X/$ - see front matter © 2007 International |  | Coelho, Mariana Barroso, Trouw, Rudolph Allard Johannes, Ganade, Carlos E., Vinagre, Rodrigo, Mendes, Júlio Cezar, Sato, Kei (2017) Constraining timing and P-T conditions of continental collision and late overprinting in the Southern Brasília Orogen (SE-Brazil): U-Pb zircon ages and geothermobarometry of the Andrelândia Nappe System. Precambrian Research, 292. 194-215 doi:10.1016/j.precamres.2017.02.001 | Journal (article/letter/editorial) | | overprinting in the Southern Brasília Orogen (SE-Brazil): U-Pb zircon ages and geothermobarometry of the...overprinting in the Southern Brasília Orogen (SE-Brazil): U-Pb zircon ages and geothermobarometry of the...overprinting in the Southern Brasília Orogen (SE-Brazil): U-Pb zircon ages and geothermobarometry of the...Rio de Janeiro, Brazil 2. Serviço Geológico do Brasil – SBG/CPRM, Rio de Janeiro, Brazil 3. Universidade...Universidade de São Paulo – USP, São Paulo, Brazil ABSTRACT The Andrelândia Nappe System (ANS) is an important |  | Andersen, Allen K., Clark, James G., Larson, Peter B., Donovan, John J. (2017) REE fractionation, mineral speciation, and supergene enrichment of the Bear Lodge carbonatites, Wyoming, USA. Ore Geology Reviews, 89. 780-807 doi:10.1016/j.oregeorev.2017.06.025 | Journal (article/letter/editorial) | | The Eocene (ca. 55-38 Ma) Bear Lodge alkaline complex in the northern Black Hills region of northeastern...variations in mineral chemistry controlling the lateral complex-wide geochemical heterogeneity. HREE-enrichment...consists of fine, acicular monazite, jarosite, rutile/pseudorutile, barite, and plumbopyrochlore, an...Gold Rush of the 1870s, the Bear Lodge alkaline complex (BLAC) is the focus of renewed interest for rare...carbonatite-hosted REE mineralization at the center of the complex constitutes a combined inferred, measured, and |  | | 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 |  | | Journal (article/letter/editorial) | | the Campos Gerais Domain — A reworked margin of the São Francisco paleocontinent (SE Brazil): Constraints...Geological Survey of Brazil – CPRM, Av Brazil 1731, Belo Horizonte 30140-002, Brazil Department of Mineral...orogeny a b s t r a c t The Campos Gerais Domain (CGD) in southeastern Brazil is an approximately 180 km ...metavolcano-sedimentary rocks of the Fortaleza de Minas and Alpinópolis segments represent a Mesoarchean...chrono-correlated with the main accretionary phase of the Minas Orogeny, and with the Pouso Alegre/Amparo and São |  | | Journal (article/letter/editorial) | | layered complex: Meso- (1.25 Ga) and Neoproterozoic (0.79 Ga) extensional events in central Brazil Márcio...Universidade de Brası́lia, Brası́lia-DF 70910-900, Brazil Research School of Earth Sciences, Australian National...Abstract The Niquelândia mafic–ultramafic layered complex, in the central part of the Brası́lia Belt, is...results indicate that the eastern part of the complex (Lower Series) is a Neoproterozoic (797 ± 10 Ma)...tectonically juxtaposed along a major shear zone. The complex was metamorphosed at 765 ± 8 Ma as indicated by |  | | Journal (article/letter/editorial) | | Ouro Preto, Ouro Preto MG, Brazil, 35.400-000 b Departmento Engenharia de Minas , Universidade Federal do...do Rio Grande do Sul, Porto Alegre RS, Brazil, 90.035-190 Version of record first published: 06 Jul 2010...Ouro Preto MG, Brazil 35.400-000 AND ADELIR JOSÉ STRIEDER Deparlmento Engenharia de Minas, Universidade...Federal do Rio Grande do Sul, Porto Alegre RS, Brazil 90.035-190 Downloaded by [University of Tennessee...ternary (Cr3+ x Al3+ x Fe3+) diagrams; CR-SPINELS, BRAZIL Downloaded by [University of Tennessee, Knoxville] |  | 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) | | dos Seis Lagos siderite carbonatite, Amazonas, Brazil Arthur L. Giovannini a,⁎, Roger H. Mitchell b,...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) | | dos Seis Lagos Nb (Ti, REE) Deposit (Amazonas, Brazil). Arthur L. Giovannini, Artur C. Bastos Neto, Claudio...dos Seis Lagos Nb (Ti, REE) Deposit (Amazonas, Brazil)., Ore Geology Reviews (2017), doi: http://dx.doi...dos Seis Lagos Nb (Ti, REE) Deposit (Amazonas, Brazil). Arthur L. GIOVANNINI1, Artur C. BASTOS NETO2...for the Mn. The main Nb ore mineral is Nb-rich rutile (with 11.26 – 22.23 wt.% Nb2O5), which occurs in...intense. Minor Nb-rich brookite formed from Nb-rich rutile occurs as broken spherules with an “oolitic” (or |  | Melgarejo, Joan C., Costanzo, Alessandra, Bambi, Aurora C.J.M., Gonçalves, Antonio O., Neto, Andrés B. (2012) Subsolidus processes as a key factor on the distribution of Nb species in plutonic carbonatites: The Tchivira case, Angola. Lithos, 152. 187-201 doi:10.1016/j.lithos.2012.06.024 | Journal (article/letter/editorial) | | areas. Sr-, Ba- and Pb-pyrochlores and Nb-rich rutile replace earlier pyrochlore generations and are...oxidising conditions for mineral precipitation. Nb-rich rutile, gorceixite, Ba-rich K-feldspar and late Ba-poor...187–201 Fig. 1. Geological map of the Tchivira complex. J.C. Melgarejo et al. / Lithos 152 (2012) 187–201...economic point of view: the Seis Lagos deposit in Brazil, the largest Nb deposit in the world, has reserves...of primary ores have been converted to supergene rutile (Dardenne and Schobbenhaus, 2000). The Tchivira |  | | Journal (article/letter/editorial) | | temperature metamorphism in the Anápolis–Itauçu Complex, Central Brazil Maria Emilia Schutesky Della Giustina a...Instituto de Geociências, 70910-900, Brasília, DF, Brazil Universidade de São Paulo, Instituto de Geociências...Cidade Universitária, 05508-900, São Paulo, SP, Brazil a r t i c l e i n f o Article history: Received...context, the Anápolis–Itauçu Complex, a high-grade complex in central Brazil with ultrahigh temperature...information within this topic. The Anápolis–Itauçu Complex (AIC) includes ortho- and paragranulites, locally |  | | Journal (article/letter/editorial) | | geological work at the Alnö Island alkaline-carbonatite complex in 1889. The history of carbonatite research up...(fenitisationtype metasomatism), and alkaline-carbonatite complex morphology to the exploration geologist, (iii)...studies. We use the term alkaline-carbonatite complex to denote occurrences where magmatic and or carbohydrothermal...hosted by a carbonatite or alkaline-carbonatite complex, be situated at the contact between the intrusion...reported at the St.-Honoré alkaline-carbonatite complex (Canada) by Kamenetsky et al. (2015), further supporting |  | | Report (issue) | | PLURINATIONAL STATE OF BOSNIA AND HERZEGOVINA BOTSWANA BRAZIL BRUNEI DARUSSALAM BULGARIA BURKINA FASO BURUNDI...and environment, as well as waste management and mine closure. Other topics covered include storage of...particular the contributions of the late R. Villas-Boas (Brazil). The IAEA officers responsible for this publication........................................ 35 5.3.4. Mine closure ..................................................................................... 39 BRAZIL .............................................. |
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