  We present a medium resolution spectrum of Jupiter's irregular satellite
Himalia covering the critical 3 $\mu$m spectral region. The spectrum shows no
evidence for aqueously altered phyllosilicates, as had been suggested from the
tentative detection of a 0.7 $\mu$m absorption, but instead shows a spectrum
strikingly similar to the C/CF type asteroid 52 Europa. 52 Europa is the
prototype of a class of asteroids generally situated in the outer asteroid belt
between less distant asteroids which show evidence for aqueous alteration and
more distant asteroids which show evidence for water ice. The spectral match
between Himalia and this group of asteroids is surprising and difficult to
reconcile with models of the origin of the irregular satellites.
