Table Of Content

Isotopic geochemical characterization of selected nepheline syenites and phonolites from the Pogos de Caldas alkaline complex, Minas Gerais, Brazil M.E. Shea (Chicago, IL, USA) Geomorphological and hydrogeological features of the Pocos de Caldas caldera analogue study sites D.C. Holmes (Nottingham, UK) A.E. Pitty (Henley-on-Thames, UK) , and D.J. Noy I ada ser aa ast tatiana atin baseanaheaiiaanaalaamaniaiaibe 215 Ground water chemistry and geochemical modeling of water-rock interactions at the Osamu Utsumi mine and the Morro do Ferro analogue study sites, Pocos de Caldas, Minas Gerais, Brazil D.K. Nordstrom (Menlo Park, CA, USA), R.H. McNutt (Hamilton, Canada), I. Puigdoménech (Nyk6ping, Sweden) , J.A.T. Smellie (Uppsala, Sweden) and M. Wolf (Neuherberg, Germany ) Natural decay series studies of the redox front system in the Pocos de Caldas uranium mineralization A.B. McKenzie. R.D. Scott (Glasgow, UK), P. Linsalata (Tuxedo, NY, USA) and N. Miekeley (Rio de Janeiro, Brazil ) The interpretation of 7*U-?34*U-?°Th-***Ra disequilibria produced by rock-water interactions R.D. Scott, A.B. McKenzie (Glasgow, UK) and W.R. Alexander (Bern, Switzerland ) Uranium and thorium isotopes in groundwaters from the Osamu Utsumi mine and Morro do Ferro natural analogue sites, Pocos de Caldas, Brazil N. Miekeley (Rio de Janeiro, Brazil), P. Linsalata (Pearl River, NY, USA) and J.K. Osmond (Tallahassee, FL, USA) Rare-earth elements in groundwaters from the Osamu Utsumi mine and Morro do Ferro analogue study sites, Pocos de Caldas, Brazil N. Miekeley, H. Coutinho de Jesus, C.L. Porto da Silveira (Rio de Janeiro, Brazil), P. Linsalata and R. Morse (Tuxedo, NY, USA) Light rare earth elements and natural series radionuclides within the Morro do Ferro P. Linsalata and R. Morse (Tuxedo, NY, USA) Chemical and physical characterization of suspended particles and colloids in waters from the Osamu Utsumi mine and Morro do Ferro analogue study sites, Pogos de Caldas, Brazil N. Miekeley, H. Coutinho de Jesus, C.L. Porto da Silveira (Rio de Janeiro, Brazil) and C. Degueldre ( Villigen, Switzerland ) Microbiological analysis at the Pocos de Caldas natural analogue study sites J.M. West (Nottingham, UK), I.G. McKinley (Wettingen, Switzerland ) and A. Vialta (Pogos de Caldas, Brazil ) Testing models of trace element geochemistry at Pocgos de Caldas J. Bruno (Cerdanyola, Spain), J.E. Cross (Harwell, UK), J. Eikenberg ( Villigen, Switzerland) , I.G. McKinley (Wettingen, Switzerland), D. Read (Epsom, UK), A. Sandino and P. Sellin (Stockholm, Sweden) Movement of the redox front at the Osamu Utsumi uranium mine, Pogos de Caldas, Brazil L. Romero, I. Neretnieks and L. Moreno (Stockholm, Sweden ) Geochemical modelling of uranium redistribution in the Osamu Utsumi mine, Pogos de Caldas D. Read (Epsom, UK) Redox front geochemistry and weathering: theory with application to the Osamu Utsumi uranium mine, Pocos de Caldas, Brazil P.C. Lichtner and N. Waber (Bern, Switzerland ) Near-field high temperature transport: evidence from the genesis of the Osamu Utsumi uranium mine, Pocos de Caldas alkaline complex, Brazil L.M. Cathles (Ithaca, NY, USA) and M.E. Shea (Chicago, IL, USA)