  The equation of state (EoS) of the outer crust of a cold non-accreting
magnetar has been determined using the model of Lai and Shapiro (1991). For
this purpose, we have made use of the latest experimental atomic mass data
complemented with a Hartree-Fock-Bogoliubov (HFB) mass model. Magnetar crusts
are found to be significantly different from the crusts of ordinary neutron
stars.
