 | | 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...(Spain), a granitic Hercinian massif intercepted by a quartz vein with associated primary uranium mineralisations...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) |  | Degueldre, Claude, Triay, Iñes, Kim, Jae-Il, Vilks, Peter, Laaksoharju, Marcus, Miekeley, Norbert (2000) Groundwater colloid properties: a global approach. Applied Geochemistry, 15 (7) 1043-1051 doi:10.1016/s0883-2927(99)00102-x | Journal (article/letter/editorial) | | Catholic University, GaÂvea, 22453, Rio de Janeiro, Brazil b Received 2 June 1999; accepted 16 September...Canadian shields. The rock is mainly composed of quartz, feldspar and mica. Minerals currently found in...the granitic fractures are: illite, muscovite, quartz, and chlorite, calcite, Fe oxy-hydroxides, with...deep aquifers. The sites are the Menzenchwand U mine, the Bad SaÈckingen spring, the Zurzach thermal...mainly of quartz, feldspar and zeolite with local gel layers (Levy, 1992). Morro do Ferro, Brazil, is an |  | 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...is schematically depicted in Fig. 3. comprising quartz, sphalerite, pyrite and chalcopyrite as well as |  | | Journal (article/letter/editorial) | | are hosted by sandstone in Cigar Lake, Canada, by quartz muscovite schist in Koongarra, Australia and by...by alkaline volcanic rock in the Poços de Caldas, Brazil. One rare study of a granite-hosted uranium...granite is composed of almost equal amounts of quartz, plagioclase and K-feldspar. The mafic minerals...illite, kaolinite, chlorite, pyrite, fine-grained quartz, hematite, fluorite and calcite. In addition, an... The gangue minerals are: microcrystalline-quartz, quartz, chlorite, calcite, fluorite and clay minerals |  | 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 |  | | Report (chapter) | | inclusions (as proposed for groundwaters at the Stripa Mine, Sweden, Nordstrom et al. 1989b); halogen-bearing...hornblende, Fe-Ti oxides > feldspars > carbonates > quartz (Landstr6m et al. 1982). In fractured rocks, such...with pyrite oxidation at the Osamu Utsumi uranium mine, Poqos de Caldas, Brazil. For the oxidation reaction:...estimates of redox-front migration rates at Poqos de Caldas. Arthur (1996) also used the stationary-state model...geochemistry at the Osamu Utsumi mine and Morro do Ferro analogue study sites, Po,cos de Caldas, Brazil. Nagra Technical |  | | Journal (article/letter/editorial) | | STUDIES: GEOLOGY AND MINERALOGY OF MORRO DO FERRO, BRAZIL P.M.C. B A R R E T T O a n d K. F U J I M O R I...Nuclear Energy Commission (CNEN), Rio de Janeiro (Brazil) (Accepted for publication January 15, 1986) Abstract...studies: Geology and mineralogy of Morro do Ferro, Brazil. In: N.A. Chapman and J.A.T. Smellie (Guest-Editors)...time. The Morro do Ferro in the State of Minas Gerais, Brazil, could be a suitable analogue for certain...association with other research institutions in Brazil. This joint project entitled "Mobility of Thorium |  | 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) | | precipitation of pedogenic calcite in the case of the HREE. Quartz sand dilutes the REE content, and concentration...consists of mica schists, fine-grained quartzites, and quartz schists; xenoliths of Malmesbury rocks are common...K-feldspar (50%), plagioclase feldspar (15%), quartz (25%), biotite (10%) and accessory grains of apatite...apatite, zircon and hornblende. Microcrystalline quartz is a common feature of the Darling Hill granites...concentrations reflect dilution by quartz with sample SS6 dominated by quartz sand (95 wt.%) with lesser amounts |  | | Journal (article/letter/editorial) | | aluminum bearing rocks (Duggan et al., 1990), and in mine soils (Alvarez Rodrı́guez et al., 1996), bat guano...filled with different minerals including barite, quartz, and an Fe–Ca silicate, as identified by Energy...controlling solution phosphorus concentration in mine soils in Galicia, Spain. Sci. Total Environ. 180...Schott J. and Dove P. (1994) Dissolution rate of quartz in Pb and Na electrolyte solutions. Effect of the...the Osamu Utsumi mine and the Morro do Ferro analogue study sites, Pocßos de Caldas, Minas Gerais, Brazil |  | | 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 |  | | Journal (article/letter/editorial) | | feldspar, aegirine, riebeckite, mica, chlorite and quartz; accessory minerals are pyrite, galena, apatite...(metasomatic minerals) and some micas, chlorite and quartz (terrigenous admixture). Ilmenite, monazite, xenotime...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 |  | | Journal (issue) | | fractured and are intruded by a dolerite dyke and quartz vein. The dolerite dyke, having a length of3 km...study conducted in and around one of the chromite mine of the valley reveals that the concentration of...varying between 0.02 mg/l and (Cr 0.12 mg/l in mine effluents and 0.03 Central Mining Research Institute... the water samples of ground and surface water, mine effluents and R. K. Tiwary which is in the downstream...clearly shows that the soil lying in the vicinity of mine waste dump shows highest concentration of Cr*®. |  | | 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...central core of the complex is barren hematite– quartz breccia, flanked to the east and west by zones...not report U from phosphorite as a resource. (8) Quartz-pebble conglomerate deposits constitute about 6% |  | 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) | | when normalized against NASC and the host Butte Quartz Monzonite (BQM), and a possible enrichment in middle...first REE data reported from a flooded open-pit mine. The results are discussed and placed within the...highly altered granite locally known as the Butte Quartz Monzonite (BQM). Approximately 320 million tons...(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 |  | | Journal (article/letter/editorial) | | sediments in most groundwaters are dominated by quartz and aluminum silicate minerals. Fe oxyhydroxides...des cas, de tels sédiments contiennent surtout du quartz et des silicates d’aluminium. Les oxyhydroxides...to soils and runoff to water systems, mine tailings and acid mine drainage, and soil and groundwater quality...Halfmile Lake deposit consists of felsic units of quartz porphyry, felsic pyroclastic rocks and minor felsic...places appears to infill fault zones (Barrie 1982). Quartz and carbonate veins are common in both the footwall |  | | 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 |  | | Journal (article/letter/editorial) | | connection to Iron chemistry in a former uranium mine — Lake Tranebärssjön F. EDBERG1*, A.F. ANDERSSON2...Centro Hospitalar das Caldas da Rainha, R. Diário de Notícias, 2500-176 Caldas da Rainha, Portugal The...of a rock waste pile of the uranium mine of Poços de Caldas, Brazil MARK A. ENGLE1, CARLETON R. BERN2... Universty of Campinas - UNICAMP Campinas, SP, Brazil, P.O. Box 6152 (*correspondence: jacinta@ige.unicamp...former uranium production centre of Poços de Caldas (Brazil) are being discussed and elaborated, several |  | | Journal (article/letter/editorial) | | partitioning between hydrous ferric oxides and acid mine water during iron oxidation Philip L. Verplancka...precipitates as hydrous Fe (III) oxides in acid mine waters. This study examines the effect of Fe precipitation...the rare earth element (REE) geochemistry of acid mine waters to determine the pH range over which REEs...complement these field studies, a suite of six acid mine waters with a pH range from 1.6 to 6.1 were collected...involving contaminant reactions and transport at complex mine waste sites, and enhance the interpretation of water–rock |  | | Journal (article/letter/editorial) | | are mainly composed of different proportions of quartz and clay minerals (kaolinite and illite) with minor...associations of these sedimentary rocks consist of quartz, kaolinite, mica, illite and minor amounts of K-feldspars...that the sandstone framework consists mainly of quartz and, in minor amounts, feldspars, rock fragments...porosity. Monocrystalline quartz with undulose extinction predominates over other quartz types such as monocrystalline...monocrystalline quartz with straight extinction and polycrystalline quartz. Feldspars are frequently weathered |  | | 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) | | reaction rates are used in the simulations. Albite and quartz are the minerals that make up the parent rock in...protolith is presented in this paper. Albite and quartz are the primary minerals making up the parent rock;...dissolution and precipitation reactions for albite, quartz, gibbsite, kaolinite, and Na-mica (paragonite)...given by Kab, K,,, Kgib9Lo~r and Kmica. Albite and quartz are the minerals that make up the “granitic” parent...rock composition is 72 vol.% albite and 28 vol.% quartz (porosity not accounted for), which would be equivalent |  | | Journal (article/letter/editorial) | | stratigraphy at the Halfmile Lake deposit consists of quartz-phenocrystic felsic porphyry units (QFP), interpreted... The diabase is variably altered to carbonate. Quartz and carbonate veins are common in both the footwall...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 |  | | Journal (article/letter/editorial) | | systems include acidic, sulfate-rich waters draining mine tailings (Miekeley et al., 1992), geothermal springs...from the Osamu Utsumi mine and Morro do Ferro analogue study sites, Poços de Caldas, Brazil. J. Geochem...Babington-type PEEK nebulizer and a double-pass (Scott-type) quartz spraychamber, Peltier-cooled to t ⫽ 2⬚C . During...3, t ⫽ 25⬚C ). In a thermostated 10-cm open-top quartz cell, 50 mL of 0.7 mol/L NaClO4 or 0.7 mol/L NH4ClO4 |  | | Journal (article/letter/editorial) | | Australia (Ranger, Jabiluka, and Nabarlek), the quartz-pebble conglomate deposits of South Africa and...metamorphic, and magmatic deposits of the Ukraine, Brazil, and Namibia, and some IOCG and breccia deposits...uraninite with its concentration in placers (pebble-quartz conglomerates; see Table 1). Major sources of U...Complex, the U veins – in contrast to the c. 340 Ma quartz-Au veins – are not related to the emplacement of...stress field, resulting in pre-U c. 308-304 Ma quartz-sulfide and carbonate-sulfide mineralization, c |
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