 | Meisser, N., Brugger, J., Ansermet, S., Thelin, P., Bussy, F. (2010) Francoisite-(Ce), a new mineral species from La Creusaz uranium deposit (Valais, Switzerland) and from Radium Ridge (Flinders Ranges, South Australia): Description and genesis. American Mineralogist, 95 (10) 1527-1532 doi:10.2138/am.2010.3413 | Journal (article/letter/editorial) | | O(OH)·2H2O, rabejacite Ca(UO2)4(SO4)2(OH)6·6H2O, schoepite (UO 2) 8O 2(OH) 12·12H 2O, schröckingerite NaCa...Paralana Hot Springs (Brugger et al. 2005). The province contains many small Paleozoic hematite-U-CuNb-REE...boltwoodite, hyalite, kasolite, rutherfordine, schoepite, and metaschoepite, soddyite, spriggite, meta-torbernite...from the oxidation zone of the Bangombé natural fission reactor, Gabon, by Janeczek and Ewing (1996)....RDC (Piret et al. 1988) Françoisite-(Ce), Bangombé, Gabon (Janeczek and Ewing 1996) Françoisite-(Ce) |  | | Journal (article/letter/editorial) | | and further to schoepite, [(UO2)8O2(OH)12](H2O)12 (Finch et al. 1996) (Fig. 4). Schoepite and the closely-related...closely-related phases, such as meta schoepite, (UO2)(OH) (Weller et al. 2000) and paulscherrerite (Brugger...Ianthinite (violet blackish) partly altered to schoepite (Sch; yellow) growing on pyrite (Py) grains in...properties of their structural units Mineral schoepite metaschoepite (synth.) paulscherrerite Na-metaschoepite...represented by the following paragenetic sequence: schoepite → vandendriesscheite → fourmarierite → masuyite |  | | Journal (article/letter/editorial) | | Branch Road NW, Washington, D.C. 20015, U.S.A. Department of Geological Sciences, University of Michigan...Avenue, Ann Arbor, Michigan 48109-1005, U.S.A. 3 Department of Earth and Planetary Sciences, Johns Hopkins...and the unique Oklo natural nuclear reactors in Gabon. The onset of hydrothermal transport of (UO2)2+...and the unique Oklo natural nuclear reactors in Gabon. During this phase, most uranyl minerals would have...ianthinite [U24+(U6+O2)4O6·9H2O], as well as schoepite [(UO2)8O2(OH)12·12H2O], and becquerelite [Ca(UO2)6O4(OH)6·8H2O] |  | | Journal (article/letter/editorial) | | deposits and thereby determine long-term rates 1 Department of Geology, FCFM, Universidad de Chile Plaza...uraninite (UO2) sample from Congo: lemon yellow schoepite [(UO2) 8O2 (OH)12·12H2O]; amber-colored becquerelite...deposits occur in Australia. In the Hamersley province of Western Australia, there are channel iron deposits...famous ~2 billion-year-old Oklo uranium deposit (Gabon), considered a natural fission reactor, have provided...recrystallization and Pb loss in the Oklo and Bangombé natural fission reactors, Gabon. Geochimica et Cosmoschimica Acta |  | | Journal (article/letter/editorial) | | 2003). These minerals can be oxyhydroxides (e.g., schoepite), silicates (e.g., uranophane, sklodowskite, cuprosklodowskite)...phosphates at the natural fission reactor at Bangombé (Gabon), where uranyl phosphates contain high amounts...equilibrated with certain amounts of minerals such as schoepite or tenorite to reach higher concentrations of... and P at varying fO2 and pH, and uraninite, schoepite, uranophane, torbernite, and goethite were precipitated...water analysis MenzGru3 (Table 2) with quartz, schoepite, tenorite and hydroxyapatite at a log fO2 of –0 |  | | Journal (article/letter/editorial) | | University, New York (schlosser@ldeo.columbia.edu) 2 Department of Earth and Env. Engineering, Columbia Univ...(frank@erdw.ethz.ch) 2 University of Oxford, Department of Earth Sciences, Oxford OX1 3PR, U.K. 3 Laboratory...Uppsala, Sweden (goran.possnert@material.uu.se) 2 Department of Earth Sciences, Uppsala University, 752 36...ALDAHAN1, G. POSSNERT2, M. MEILI3 AND V. ALFIMOV2 1 Department of Earth Sciences, Uppsala University, 752 36...Palisades, NY 10964 (jcole@ldeo.columbia.edu) 2 Department of Geosciences, State University of New York |  | Munasinghe, P. Sumudu, Elwood Madden, Megan E., Brooks, Scott C., Elwood Madden, Andrew S. (2015) Dynamic interplay between uranyl phosphate precipitation, sorption, and phase evolution. Applied Geochemistry, 58. 147-160 doi:10.1016/j.apgeochem.2015.04.008 | Journal (article/letter/editorial) | | three autunite-group phases and the oxyhydroxide schoepite on a uranium-phosphorous log-log activity diagram...uranium mobility within these systems. Autunite, schoepite ((UO2)8O2(OH)12•12H2O), and uranium metaphosphate...minerals, (3) precipitation of phosphate-free schoepite ((UO2)8O2(OH)12](H2O)12) will lead to downward...downward movement parallel to the U-axis, while schoepite dissolution would lead to upward vertical trajectories...initial concentrations with schoepite+chernikovite precipitation, schoepite+saléeite, and meta-autunite |  | | Report (issue) | | CHAPTER 1: INTRODUCTION Kurt Kyser Department of Geological Sciences and Geological Engineering, Queen’s...Bay Basin in Canada and the Franceville Basin in Gabon, but at the boundary between sandstone and grey...the oldest deposits from the Franceville Basin in Gabon. Some of these latter deposits preserve the effects...ADMINISTRATION (2007): International Energy Outlook 2007. Department of Energy, Washington, D.C., www.eia.doe.gov/...EXPLORATION AND DISCOVERY OF DEPOSITS Kurt Kyser Department of Geological Sciences and Geological Engineering |
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