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The spectrum of HV 2310, an evolved star in the Large Magellanic Cloud, takenwith the Infrared Spectrograph (IRS) on the Spitzer Space Telescope reveals thepresence of an optically thin shell of silicate dust with unusual spectralstructure in the 10 um feature, with an emission peak at 9.7 um, a saddle at10.4 um, and an extended shoulder to 11.2 um. This structure is similar tospectra from crystalline silicate grains, and of the available opticalconstants, forsterite provides the best fit. The spectrum also shows structureat 14 um which may arise from an unidentified dust feature.Comment: Accepted by ApJ 14 September, 2005, 6 pages (emulateapj), 6 figure

The Unusual Silicate Dust around HV 2310, an Evolved Star in the Large Magellanic Cloud