The oxygen diffusion rates for so-called fast paths were obtained by using traditional graphical analysis methods and the Whipple-LeClaire equation; assuming that the width of the fast path was 1nm. Two Arrhenius relationships were obtained for the fast-path diffusion: one for dry conditions, and the other for hydrothermal conditions:

dry:     D(m2/s) = 4.03 x 10-2exp[-313(kJ/mol)/RT]

wet:    D(m2/s) = 3.48 x 10-7exp[-219(kJ/mol)/RT]

X.Y.Zhang, E.B.Watson, D.J.Cherniak: Geochimica et Cosmochimica Acta, 2007, 71[6], 1563-73