 | | Journal (article/letter/editorial) | | INTRA-INTRUSIVE URANIUM DEPOSITS OF PO .COS DE CALDAS, BRAZIL F.E. DE V. LAPIDO LOUREIRO and R.C. DOS SANTOS...NUCLEBRAS, Rua Ga. Polidoro-Bota[ogo, Rio de Janeiro (Brazil) (Received February 24, 1986; revised and accepted...intra-intrusive uranium deposits of Poqos de Caldas, Brazil. In: J.W. Gabelman (Editor), Unconventional..., 3: 227-240. The alkaline complex of Poqos de Caldas is notable for its large size (1000 km 2), wide...The principal ore bodies are located at the Osamu Utsumi Mine, while smaller deposits of probable economic |  | | Journal (article/letter/editorial) | | within six natural analogue studies: Pocß os de Caldas, Cigar Lake, Maqarin, El Berrocal, Oklo and Palmottu...undertaken in the following systems: Pocß os de Caldas (Brazil), a Mesozoic volcanic ring-structure hosting...methodology of the BPM exercises, from the Pocß os de Caldas to the Oklo and Palmottu projects, has not varied...included in this revision: Pocßos de Caldas: SKB (Sweden), KTH (Sweden), PSI (Switzerland)...model the U/Fe association was done in Pocß os de Caldas by assuming the coprecipitation of U3O8 with Fe(OH)3 |  | Gomes, Celso de Barros, Azzone, Rogério Guitarrari, Rojas, Gaston Eduardo Enrich, Guarino, Vincenza, Ruberti, Excelso (2021) Agpaitic Alkaline Rocks in Southern Brazilian Platform: A Review. Minerals, 11 (9) 934 doi:10.3390/min11090934 | Journal (article/letter/editorial) | | University of São Paulo, São Paulo 05508-080, Brazil; rgazzone@usp.br (R.G.A.); gastonenrich@usp.br...occurrences located in southern Brazil and at the border between Brazil and Paraguay. All the Brazilian...Triassic. The most significant occurrence is Poços de Caldas, the largest alkaline massif in South America....to late-magmatic Main References 1 Poços de Caldas 79–87 (Ar-Ar, K-Ar) 2 Itatiaia 67.5–71.3 Ma...plutons. Main examples of these massifs are Poços de Caldas [14,42] and Itatiaia [15,43]. A small fraction |  | Thompson, R. N., Gibson, S. A., Mitchell, J. G., Dickin, A. P., Leonardos, O. H., Brod, J. A., Greenwood, J. C. (1998) Migrating Cretaceous-Eocene Magmatismin the Serra do Mar Alkaline Province,SE Brazil: Melts from the Deflected Trindade Mantle Plume?. Journal of Petrology, 39 (8) 1493-1526 doi:10.1093/petroj/39.8.1493 | Journal (article/letter/editorial) | | Magmatism in the Serra do Mar Alkaline Province, SE Brazil: Melts from the Deflected Trindade Mantle Plume...UNIVERSIDADE DE BRASÍLIA, 70910 BRASÍLIA DF, BRAZIL RECEIVED JULY 30, 1997; REVISED TYPESCRIPT ACCEPTED...volcanic remnants, and dyke swarms along coastal SE Brazil. The igneous rocks are emplaced into metamorphics...migrated progressively ~500 km ESE, from Poços de Caldas to Cabo Frio, between ~80 and 55 Ma. It is inferred...mantle plume impacted at ~85 Ma beneath interior SE Brazil where the lithosphere was too thick (>150 km), |  | | Journal (article/letter/editorial) | | rocks and soils from the Maicuru complex, Para, Brazil. J. Geochem. Expl., 47, 165 82. Ansheles, O.M....(1996) Zirconium mobility in bauxites of Southern Brazil. J. South Amer. Earth Sci., 9: 161 70. Mordberg...uranium mineralization at trhe Osamu Utsumi mine, Minas-Gerais, Brazil. J. Geochem. Expl., 45, 53 112...Nasraoui, M. (1996) Pyrochlore from weathered carbonatite at Lueshe, Zaõ¨re. Mineral. Mag., 60, 731 50 |  | | Report (issue) | | engineered. Once an ore deposit is discovered, a mine is developed and U extracted by a variety of mining...(Australia) Pervomayskoye (Ukraine), Lagoa Real (Brazil), Valhalla (Australia) Pribram , Jachymov (Czech...examples of this deposit type are Lagoa Real in Brazil, Zheltye Vody deposit in Ukraine and Valhalla in...rocks including alaskite, granite, pegmatite, carbonatite, and monzonite. Major world deposits include...gold mining. In Namibia, the large Rössing open cut mine has been in operation since 1976, and currently |  | | Book | | ........................................... 25 Brazil .................................................uranium if higher prices justify reprocessing the mine tailings to recover some of the uranium that was...wastewater during environmental reclamation at a mine that has ceased production. The following statistical...Canada South Africa Namibia Russian Federation Niger Brazil Uzbekistan Ukraine Mongolia $40/kgU < $80/ kgU...operations. 9 In Central and South America, Brazil was the only country producing in 2001 and 2002 |  | | Report (volume) | | model of carbonatite deposits, by Donald A. Singer 51 Grade and tonnage model of carbonatite deposits...ultramafic complex 50 Tonnages of carbonatite deposits 52 Grades of carbonatite deposits 53 Tonnages of W skarn...based on considerations that extend far beyond the mine itself, in some instances relating to the overall...subject, as in a scale model of the workings of a mine, to a unifying concept that explains or describes...b) C. Alkaline intrusions in stable areas Carbonatite ------------------------------------------------10 |  | | Journal (article/letter/editorial) | | hanging wall. During a subsequent mining period, the mine was re-opened to recover sideritic parts of the...hydrous aluminum oxides and hydroxides. Dolomitic carbonatite. Shale enriched in organic matter. A schistose...shale Blue schist Busorite Calcrete Calcsilicate Carbonatite Charnockite Chert Clay(stone) Conglomerate Dacite...metamorphism. E Rauhagite Middle-grained Mg carbonatite bearing apatite, pyrite, amphibole with 30 to...and the finer mudstones and shales. J Sövite A carbonatite with calcite as the dominating constituent. E | | | Journal (article/letter/editorial) | | hanging wall. During a subsequent mining period, the mine was re-opened to recover sideritic parts of the...hydrous aluminum oxides and hydroxides. Dolomitic carbonatite. Shale enriched in organic matter. A schistose...shale Blue schist Busorite Calcrete Calcsilicate Carbonatite Charnockite Chert Clay(stone) Conglomerate Dacite...metamorphism. E Rauhagite Middle-grained Mg carbonatite bearing apatite, pyrite, amphibole with 30 to...and the finer mudstones and shales. J Sövite A carbonatite with calcite as the dominating constituent. E |  | | Report (issue) | | literature. An example was with the Osamu Utsumi mine in Brazil. This deposit has been reported in the...the literature as Pocos de Caldas, Minas de Caldas and Cereado to name a few synonyms. Hopefully, most...design a similar database model for the CNEN in Brazil in 1983. Since that time, India has also developed...producer. Mine A mine is a deposit from which ore is currently being recovered. Depleted Mine A depleted...depleted mine is, a mine-out or depleted ore deposit with insufficient Reasonably Assured Resources recoverable |  | | Journal (volume) | | .........................319 EM61 Mineralogy of mine wastes and contaminated soil......................and phases composition of flotation waste of Bor mine (Serbia) Cocić, M.1, Matović, B.2 & Logar, M.3*...Myanmar Emeralds from the Piteiras mine, Minas Gerais State, Brazil: genetic implications from fluid inclusion...France The Piteiras mine in Itabira is located in the Minas Gerais State, Brazil and produces gem quality...Temperature (oC) Koffiefontein mine 1087 (±15) 5.2 (±0.1) Finsch mine 1041 (±5) 5.0 (±0.1) The structural |  | | Book | | Fritsche R (mineralogy), Fohse H. (general), Fuchs H. (Brazil), Grauch R (western USA), Gautier A. (breccia pipe...monzonite (Cu-porphyry) ...... . Subtype 9.3 Carbonatite ........................ . Subtype 9.4 Peralkaline...Granite-Related Vein Uranium Deposits: Schwartzwalder Mine, Front Range, USA ................................when analyzing pitchblende from the George Wagsfort mine at Johanngeorgenstadt, Sachsisches Erzgebirge (Saxonian...City area, Colorado. In Cornwall, the South Terras mine opened for uranium production in 1873. During the |  | | Report (volume) | | Environmental issues such as coping with uranium mine and mill tailings and other uranium-contaminated...Honeyman 1989). Smellie I 994), Poyos de Caldas in Brazil (Chapman et al. 1990) and the Oklo natural...McKinley IG, Shea ME, Smellie JAT 1990 The Poc;os de Caldas Project: Summary and implications for radioactive...Mascarenhas YP 1991 Phurcalite from Perus, Sao Paulo, Brazil, and redetermination of its crystal structure....the most important U mineral at the Ningyo-toge mine in Japan, where it was first discovered (Muto et |  | | Book | | Palacz Z. (1986) Evidence from the Parana of South Brazil for a continental contribution to Dupal basalts...that have been variably metasomatized, with carbonatite-like fluids frequently being invoked (Hauri et...considering the geochemical evidence suggesting carbonatite metasomatism in mantle peridotites (see review...subsequent re-equilibration (Sen and Leeman, 1991). Carbonatite metasomatism may increase Mg# in secondary olivines...xenoliths have been suggested to result from carbonatite metasomatism (Hauri et al., 1993; Ionov et al |
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