 | Pinto, André Jorge, Gonçalves, Mário A., Prazeres, Cátia, Astilleros, José Manuel, Batista, Maria João (2012) Mineral replacement reactions in naturally occurring hydrated uranyl phosphates from the Tarabau deposit: Examples in the Cu–Ba uranyl phosphate system. Chemical Geology, 312. 18-26 doi:10.1016/j.chemgeo.2012.04.004 | Journal (article/letter/editorial) | | 1759-016 Lisbon, Portugal LNEG, National Laboratory for Energy and Geology, Bairro do Zambujal, Ap. 7586...7586, 2611-901 Amadora, Portugal Department of Crystallography and Mineralogy, Faculty of Geological Sciences...Antonio Novais 2, Madrid 28040, Spain b c a r t i c l e i n f o Article history: Received 27 November 2011...in the Nisa deposit, located in central-eastern Portugal, are studied with X-ray diffraction (XRD), Electron...assessment of safety standards and ⁎ Corresponding author. E-mail addresses: afipinto@fc.ul.pt (A.J. Pinto), mgoncalves@fc |  | | Journal (article/letter/editorial) | | 221(2) Å, 91.110(3)°, R1 = 4.6%. Keywords: chernikovite, trögerite, abernathyite, meta-ankoleite, sodium...feuillet de type autunite avec une composition § E-mail address: alocock@nd.edu 974 THE CANADIAN MINERALOGIST...4.6%. (Traduit par la Rédaction) Mots-clés: chernikovite, trögerite, abernathyite, méta-ankoléite, sodium...Gaines et al. (1997). Mineral species include chernikovite H3O[(UO2)(PO4)](H2O)3, trögerite H3O[(UO2)(AsO4)](H2O)3...compounds of the meta-autunite group, for example chernikovite, uramphite, and sodium meta-autunite (Macaskie |  | | Journal (article/letter/editorial) | | Cass Avenue, Bldg. 205, Argonne, IL 60439-4837, USA. E-mail addresses: jerden@cmt.anl.gov (J.L. Jerden),...(see Figs. 1 and 2 for locations) Uranium (ppb) pH DO (ppm) DH1a DH1b DH2a DH2b DH5a DH5b DH6a ...measurements on standards, the precision of the pH and DO are F 0.05 and F 0.1, respectively. The weathered...DH1 DH2 Date sampled Field T (jC) Field pH Field DO (mg/l) June 7, 2001 14.6 5.9 8.1 June 7, 2001 14...a pH of 6, approximately 8 mg/l dissolved oxygen (DO), and uranium concentrations ranging from 3.2 to |  | | Book | | Group, 978-0-7643-4870-9 /11t1Dductio11 to Rudioocth•e Alinera/s, 978-0-7643-29 [2-8 ( 'o lfector \- Guide...193 10 Phone: (610) 593-1777; Fax: (610) 593- 2002 E- 111ai I: lnfo@schifferbooks.con-1 Web: ,:v,v,v.scb...law. Please purchase on ly authorized ed itions and do not participate in or encourage the electro11 ic...Ore Microscopy FORMATION AND CHARACTERISTICS OF R -E - - ... .. . Geochemistry of Uranium and Thorium ............................................. 36 s E ••••••••••••••••••••••••••••••••••••••• Argentina |  | | Report (volume) | | uraninite show an apparent epitaxial relationship, as do the overlying uranophane and ianthinite/schoepite...Environmental issues such as coping with uranium mine and mill tailings and other uranium-contaminated...urani~m l~ter proved to be U0 2 • The French chemist, E. Peligot, isolated the first elemental uranium 1n...X-rays had been announced in the popular press before ~e fi~s~ paper by Rontgen had been published, and thousands...exponential function: • ,. -·>< (I) ''time' • "inlnaJ - e where A is the decay constant. The increase in activity |
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