Alexander Fedorovich Redkin

Date and Place of Birth: July 24, 1951, Sotchi, Russia
Field of specialization: Experimental and thermodynamical studies of mineral-fluid Interaction at high temperatures and pressures
Education: M.S. Chemistry, Lomonosov's Moscow State University, June, 1974.
Ph.D.of chemistry in cell of geochemistry was taken in Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Science, Moscow, February, 1983.
Ph.D. Title is "Experimental and Thermodynamic Investigation of Frontier Reactions Controlling Conditions of Wall-Rock Beresites Formation"
Positions Held:
1974-1975 engineer researcher in Institute of the Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry, Russian Academy of Sciences (IGEM RAS), Experimental investigation of hydrolysis reaction and solubility of Al-Si minerals occur during the processes of acidic metasomatism on uranium ore deposits.
1975-1976 undergraduate student in Institute of Experimental Mineralogy, Russian Academy of Science (IEM RAS), water-rock interaction investigations.
1976-1980 senior engineer researcher, then
1980-1983 senior research scientist in IGEM RAS, continue the Experimental investigations of hydrolysis reactions and solubility of Al-Si minerals occur during the processes of acidic metasomatism on uranium ore deposits.
1983-1990 senior research scientist in IGEM RAS, the Experimental investigations of uranium oxides solubility in hydrothermal solutions at high T and P.
1990-1997 senior research scientist in IGEM RAS, the Experimental investigations of Cs, Sr, U sorption on alumo-silicate mineral, solubility of selected ore minerals in two phase region of NaCl- H2O system , experimental investigations of U-O-H system
1997 - present time senior research scientist in IEM RAS solubility of selected ore minerals (SnO2, UO2, WO3) in two phase region of salt (NaCl, KCl) - H2O system. Thermodynamic evaluations in hydrothermal uranium bearing systems
Address for contacts: Institute of Experimental Mineralogy, Russian Academy of Sciences,
Laboratory of Model of Ore Deposits, Chernogolovka, Moscow District, 142432, Russia
Phone/Fax: 007-(096)-524-62-05

List of publications 1995-2000:

  1. Redkin A.F., Hemley J.J, Cygan G.L., and Doughton M.W. The investigation of Cs and Sr sorption on Zeolite-like Phases in Rock-buffered Systems. Part 1. Sorption on Analcime at 250 - 300oC and Psat. - Eos Trans AGU, 76 (17), S144, 1995.
  2. Redkin A.F., Hemley J.J., Doughten M. W., and Cygan G.L. The ion-exchange capacity and Cs, Sr leachability of natural clinoptilolites at 200-300oC and Psat. Proceedings of Fifth International Conference on Radioactive Waste Management and Environmental Remediation Berlin, Germany, September 3-7, 1995, Vol.1 Cross-Cutting Issues and Management of High-Level Waste and Spent Fuel. ASME, 1995, pp.831-836.
  3. Redkin A.F., and Hemley J.J. About a promising of using analcime-bearing assemblages as Cs and Sr sorbent at the temperatures up to 300oC and Psat . - Proceedings of the Intern. Conf., Kiev, 1996, pp.228-229 (in Russian).
  4. Redkin A.F. Influence of oxygen fugacity and solution composition on uranium oxides solubility at temperatures to 600oC and P=1 kbar (by experimental and thermodynamic data). - Extended Abstracts of 4th International Conference on Nuclear and Radiochemistry NRC4, St-Malo, France, 1996, September 8-13, Vol.2, E-P61.
  5. Redkin A.F., Zarayskii G.P., and Velichkin V.I. The influence of the phase transformation in water-salt systems and rock buffering affect on solubility and partitioning of some ore elements (W, Sn, U). - Abstracts of International Symposium 'Physico-Chemical Aspects of Endogenic Geological Processes", devoted to the 100-anniversary of D.S.Korzhinskii, M.,1999, pp.182-183.(in Russian).
  6. Redkin A.F., Hemley J.J. Experimental Cs and Sr sorption on analcime in rock-buffered systems at 250-300oC and Psat and the thermodynamic evaluation of mineral solubilities and phase relations. - Europ.J.Mineral., 2000, 12, p. 999-1014.
  7. Redkin A.F. Experimental study of the behavior ore-forming components in the system WO3-SnO2-UO2-H2O at 400-500oC, 200-1000 bars and the hematite-magnetite buffer. - Geochemistry International. 2000, v. 38, Suppl. 2, p.227-236.
  8. Redkin A.F., Ponomarev V.I., Kostromin N.P. Hydrothermal synthesis and properties of sodium pentatungstate monohydrate Na2W5O16 · H2O. - Rus.J.Inorg.Chem. 2000, 45(8), p. 1297-1303.
  9. Redkin A.F. , Cygan G.L. Experimental determination of ferberite solubility in the KCl-HCl-H2O system at 500oC and 400-1000 bar, and the Kfs-Mu-Qtz and Ni-NiO buffers.- Geochim. Cosmochim. Acta, 2001 (in press).