  We consider two scalar fields interacting through a $\chi^*\chi\phi^*\phi$
term in the presence of a Reissner-Nordstrom black hole. Initially, only $\chi$
particles are present. We find that the produced $\phi$ particles are localized
in a region around the black hole and have a tendency towards condensation
provided that $\phi$ particles are much heavier than the $\chi$ particles. We
also find that such a configuration is phenomenologically viable only if the
scalars and the black hole have dark electric charges.
