 | | 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 |  | Bruno, J, Duro, L, de Pablo, J, Casas, I, Ayora, C, Delgado, J, Gimeno, M.J, Peña, J, Linklater, C, Pérez del Villar, L, Gómez, P (1998) Estimation of the concentrations of trace metals in natural systems. Chemical Geology, 151 (1) 277-291 doi:10.1016/s0009-2541(98)00085-0 | Journal (article/letter/editorial) | | approaches to El Berrocal žSpain / and Poços de Caldas žBrazil / J. Bruno a,) , L. Duro a , J. de Pablo...methodology to the El Berrocal ŽSpain. and Poços de Caldas ŽBrazil. sites. Trace metals under investigation...oxyhydroxides Žboth in El Berrocal and in Poços de Caldas., Ž2. the interaction of barium and manganese with...association between strontium and fluorite in Poços de Caldas. In most cases, the results were in good agreement...to perform our analyses Žsee Fig. 4.. Poços de Caldas ŽBrazil.. This system presents distinctive peculiarities |  | | Journal (article/letter/editorial) | | by alkaline volcanic rock in the Poços de Caldas, Brazil. One rare study of a granite-hosted uranium...minerals such as zircon, sphene, allanite and apatite, which commonly occur as inclusions in biotite...Testing of geochemical models in the Poços de Caldas analogue study. Nagra Tech. Rep., NTB 90-29rSKB...Shea, M.E., Smellie, J.A.T., 1992b. The Poços De Caldas: an introduction and a summary of its implications...redox front and U movement in a uranium mine at Poços de Caldas. Radiochim. Acta 52r53, 445–451. Cross |  | 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) | | aluminum bearing rocks (Duggan et al., 1990), and in mine soils (Alvarez Rodrı́guez et al., 1996), bat guano... Variscite dissolution kinetics precipitation rates of apatite (Christoffersen et al., 1998; Valsami-Jones et al...1.5–4 orders of magnitude lower than those of apatite and vivianite. Nevertheless, as will be shown below...phosphate Variscite dissolution kinetics minerals apatite and vivianite under mildly acidic conditions. Nevertheless...al. (2005a) concluded that the combination of apatite dissolution and rhabdophane precipitation buffers |  | | Journal (article/letter/editorial) | | reflects the REE content of feldspar and accessory apatite. Initial chemical weathering of the granite results...Carbonate; Weathering; Saline pans; Dolomite; Apatite; Fe oxides 1. Introduction The rare earth elements...(MREE) enrichment of accessory minerals such as apatite (Braun et al., 1998; Taunton et al., 2000; 241...13 0.45 0.08 0.44 0.08 apatite apatite apatite apatite apatite apatite apatite K-feldspar K-feldspar K-feldspar...Shaded areas represent the range in REE patterns of apatite and K-feldspar analysed in the fresh (SG1) and |  | | Journal (article/letter/editorial) | | quartz; accessory minerals are pyrite, galena, apatite, ilmenite, monazite, xenotime, zircon, columbite...cores. (3) Dissolution of sulphide minerals and apatite and the formation of crandallite group minerals:...epigenetic alteration of the profile, as are secondary apatite and muscovite. K EY WORDS : bauxite, laterite,...admixture). Ilmenite, monazite, xenotime, zircon, apatite, columbite, pyrochlore, pyrite, galena, sphalerite...reviews (Gaines et al., 1997), it is well known for apatite (Nathan, 1984). Recalculation of the formula of |  | | 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 |  | Gammons, Christopher H, Wood, Scott A, Jonas, James P, Madison, James P (2003) Geochemistry of the rare-earth elements and uranium in the acidic Berkeley Pit lake, Butte, Montana. Chemical Geology, 198 (3) 269-288 doi:10.1016/s0009-2541(03)00034-2 | Journal (article/letter/editorial) | | first REE data reported from a flooded open-pit mine. The results are discussed and placed within the...(2003) 269–288 bedrock and flooded underground mine workings (Duaime et al., 1998; Metesh and Duaime...gallons (>1.11 1011 l) of acidic and metal-rich mine water. The aqueous geochemistry of the Berkeley...phosphorus (Jonas, 2000). In the first 12 years of mine flooding, a large acidic spring—known as the Horseshoe...inputs, water –rock interaction along the submerged mine walls, and internal metal cycling (Gammons et al |  | | 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...gold mining. In Namibia, the large Rössing open cut mine has been in operation since 1976, and currently...production through the Akouta underground mine and Arlit open pit mine. China had U mines fully operational |  | | Journal (article/letter/editorial) | | elements in Cuporphyry mine tailings in the semiarid climate conditions of Sarcheshmeh mine in southeastern...elements in Cu-porphyry mine tailings in the semiarid climate conditions of Sarcheshmeh mine in southeastern...Elements in Cuporphyry Mine Tailings in the Semiarid Climate Conditions of Sarcheshmeh Mine in Southeastern...khorasani@uk.ac.ir IP T a US Abstract Sarcheshmeh mine is one of the largest Oligo-Miocene porphyry Cu...IP T substitution. CR Keywords: Sarcheshmeh mine tailings; REEs; semiarid climate; ionic potential |  | Stille, P., Pierret, M.-C., Steinmann, M., Chabaux, F., Boutin, R., Aubert, D., Pourcelot, L., Morvan, G. (2009) Impact of atmospheric deposition, biogeochemical cycling and water–mineral interaction on REE fractionation in acidic surface soils and soil water (the Strengbach case) Chemical Geology, 264 (1) 173-186 doi:10.1016/j.chemgeo.2009.03.005 | Journal (article/letter/editorial) | | down to 50 cm depth, which can be related to low apatite and plagioclase contents. These minerals have probably...plant uptake. Leaching of primary granite derived apatite controls rare earth element (REE) fractionation...been observed as secondary replacement mineral of apatite. This replacement is reflected by Ca/P ratios that...regularly with depth, implying that some of the apatite derived P has been integrated into newly formed...mainly originate from preferential dissolution of apatite during weathering and that the preferential uptake |  | | Journal (article/letter/editorial) | | 497 – 512. Banfield, J.F., Eggelton, R.A., 1989. Apatite replacement and rare earth mobilization, fractionaton...The Macuapanim Island point bar, Solimões River, Brazil. J. Sediment. Petrol. 60, 827 – 842. Johnsson,...from the Osamu Utsumi mine and Morro do Ferro analogue study sites, Poços de Caldas, Brazil. J. Geochim |  | | 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 (article/letter/editorial) | | mineral associations of LREE’s and HREE’s (e.g., in apatite, biotite, allanite, monazite, all with their own...from the Osamu Utsumi mine and Morro do Ferro analogue study sites, Pocos de Calda, Brazil. J. Geochem |  | | Journal (article/letter/editorial) | | the Halfmile Lake and Restigouche deposits and the mine waters (Fig. 4). Restigouche deposit surface waters...from the Halfmile Lake and Restigouche deposits and mine groundwaters (data from Table 1; Leybourne, 1998)...waters, (D) Restigouche deposit groundwaters, (E) mine groundwaters and (F) stream sediments from the Halfmile...the groundwaters and surface waters and for the mine waters. M.I. Leybourne et al. / Applied Geochemistry...ng/L in groundwater samples from the Heath Steele mine (Table 2; Fig. 5). The low- 708 M.I. Leybourne |  | | Journal (article/letter/editorial) | | Anothoclase Anthophyllite Antimonselite Antimony native Apatite Apophyllite Aragonite Ardennite Arfvedsonite Argentite...hanging wall. During a subsequent mining period, the mine was re-opened to recover sideritic parts of the...a groundmass of albite with muscovite, garnet, apatite, and quartz as accessory minerals. Silica-undersaturated...also contain olivine, clinopyroxene, perovskite, apatite, nepheline and garnet. Metamorphic rock consisting...biotite, calcite, zircon, aegirite, pyrochlore and apatite. Duricrusts containing chiefly calcite. A metamorphic | | | Journal (article/letter/editorial) | | Anothoclase Anthophyllite Antimonselite Antimony native Apatite Apophyllite Aragonite Ardennite Arfvedsonite Argentite...hanging wall. During a subsequent mining period, the mine was re-opened to recover sideritic parts of the...a groundmass of albite with muscovite, garnet, apatite, and quartz as accessory minerals. Silica-undersaturated...also contain olivine, clinopyroxene, perovskite, apatite, nepheline and garnet. Metamorphic rock consisting...biotite, calcite, zircon, aegirite, pyrochlore and apatite. Duricrusts containing chiefly calcite. A metamorphic |  | | Journal (article/letter/editorial) | | metamorphic, and magmatic deposits of the Ukraine, Brazil, and Namibia, and some IOCG and breccia deposits...and to a lesser extent in monazite, xenotime, apatite, and zircon (e.g., Förster, 2010). Therefore, in...structurally late N-S striking veins at South Terras Mine (LeBoutillier, 2002) hosted in grey and brown slate...Parana-Karoo basin of South Africa, Angola, and Brazil. Smaller basins in similar position are known from...the abundance of Cretaceous apatite fission-track (120 to 80 Ma) and apatite and fluorite (U-Th-Sm)-He |  | | Report (volume) | | 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...government believed might someday be economic ta mine. Stratiform deposits of large areal extent, such...younger than anorthosite, with associated ilmenite ± apatite mineralization. Textures Granulation in anorthosite...Mineralogy: (1) Ilmenite ± rutile (2) Ilmenite ± apatite Deposit value is much greater if intergrown magnetite |  | | 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....al. (1997) Unnamed* Ca 3.~(Th,U)1.3Si3012(0H) Apatite structure type; Jamveit et al. (I 997) Unnamed* |  | | Journal (volume) | | .........................319 EM61 Mineralogy of mine wastes and contaminated soil......................exceptionally complex, notably in the case of apatite, the most common and perhaps most important of...phosphorus be reviewed and potentially regulated. Apatite in its various forms as a biological or chemical...and phases composition of flotation waste of Bor mine (Serbia) Cocić, M.1, Matović, B.2 & Logar, M.3*...and Co2+ cation Physico-chemical constraints of apatite and crandallite formation in phosphorites from |  | | Book | | Fritsche R (mineralogy), Fohse H. (general), Fuchs H. (Brazil), Grauch R (western USA), Gautier A. (breccia pipe...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...century, most of it coming from the South Terras mine ilear St. Stephen (ca. 275 t). In Colorado, USA |
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