Sergey Krivovichev, Peter Burns, Ivan Tananaev, Austria) Krivovichev, Sergey (Institut fuer Mineralogie u. Petrographie, Universitaet Innsbruck, Innrain 52, Innsbruck, USA) Burns, Peter (Dept. of Civil Engineering & Geological Sciences, University of Notre Dame, Notre Dame, Russian Federation) Tananaev, Ivan (Institute of Physical Chemistry, Russian Academy of Sciences, Leninsky, Moscow, Sergey Krivovchev