Noble gas sorption experiments were performed on albite melts in an internally heated pressure vessel under 0.1 to 5kbar at 750 to 1200C. The temperature dependence of diffusivities was deduced from Knudsen cell rate-heating and fitted to an Arrhenius equation:

D(cm2/s) = 2.2·x 10-2 exp[-95.0(kJ/mol)/RT]

K.Roselieb, W.Rammensee, H.Büttner, M.Rosenhauer: Chemical Geology, 1992, 96[3-4], 241-66