  For a class of macroscopic dark matter models, inelastic scattering of dark
matter off a nucleus can generate electromagnetic signatures with GeV-scale
energy. The IceCube detector, with its kilometer-scale size, is ideal for
directly detecting such inelastic scattering. Based on the slow particle
trigger for the DeepCore detector, we perform a detailed signal and background
simulation to estimate the discovery potential. For order 1 GeV deposited
energy in each interaction, we find that IceCube can probe the dark matter
masses up to one gram.
