  We calculate the emergent spectrum of microscopic black holes, which emit
copious amounts of thermal ``Hawking'' radiation, taking into account the
proposition that (contrary to previous models) emitted quarks and gluons do not
directly fragment into hadrons, but rather interact and form a photosphere and
decrease in energy before fragmenting. The resulting spectrum emits copious
amount of photons at energies around 100MeV. We find that the limit on the
average universal density of black holes is not significantly affected by the
photosphere. However we also find that gamma ray satellites such as EGRET and
GLAST are well suited to look for nearby black holes out to a distance on the
order of 0.3 parsecs, and conclude that if black holes are clustered locally as
much as luminous matter, they may be directly detectable.
