Ice bands due to water, CO2, and hexane, and probabl
absorption by CO and CH3OH have been discovered in the vicinity
of the massive B supergiant and radio shell source G79.29+0.46.
These were discovered during calibration time, previously unexpected,
and may be formed in a compact nebula or equatorial outflow evidenced
in recent ground-based and ISOCAM observations. The central source of
G79.29+0.46 is one of only 10 Galactic stellar sources known or
suspected to be a Luminous Blue Variable, is highly reddened, and is
surrounded by a ring nebula.  As such, it is a rare source for
exploring the physical chemistry of an ice-forming region to be
contrasted with embedded YSOs and interstellar molecular clouds observed
with ISO.  The chemistry that probably include gas-phase molecules and
crystalline silicates could provide key evidience for the mass-loss history
of G79.29+0.46 and the B-LBV-RSG filiation that is a matter of serious
debate between observations and theory.  We ask for 12000 seconds of
Discretionary Observing Time to scan the central source and one
position off-source with SWS at maximum grating resolution (SWS06).
In a complementary proposal we ask Discretionary Observing Time to map
the H2O 3.07 micron ice with ISOCAM using circular variable filters.