  Using Spitzer IRAC and MIPS observations of the Large Magellanic Cloud, we
have identified 13 objects that have extremely red mid-IR colors. Follow-up
Spitzer IRS observations of seven of these sources reveal varying amounts of
SiC and C2H2 absorption as well as the presence of a broad MgS feature in at
least two cases, indicating that these are extreme carbon stars. Preliminary
estimates find these objects have luminosities of 4-11x10^3 Lsol and
preliminary model fitting gives mass-loss rates between 4x10^-5 and 2x10^-4
Msol/yr, higher than any known carbon-rich AGB star in the LMC. These spectral
and physical properties require careful reconsideration of dust condensation
and mass-loss processes for carbon stars in low metallicity environments.
